diff --git a/Gopkg.lock b/Gopkg.lock
new file mode 100644
index 0000000..06b518b
--- /dev/null
+++ b/Gopkg.lock
@@ -0,0 +1,33 @@
+# This file is autogenerated, do not edit; changes may be undone by the next 'dep ensure'.
+
+
+[[projects]]
+  digest = "1:ffe9824d294da03b391f44e1ae8281281b4afc1bdaa9588c9097785e3af10cec"
+  name = "github.com/davecgh/go-spew"
+  packages = ["spew"]
+  pruneopts = "UT"
+  revision = "8991bc29aa16c548c550c7ff78260e27b9ab7c73"
+  version = "v1.1.1"
+
+[[projects]]
+  digest = "1:0028cb19b2e4c3112225cd871870f2d9cf49b9b4276531f03438a88e94be86fe"
+  name = "github.com/pmezard/go-difflib"
+  packages = ["difflib"]
+  pruneopts = "UT"
+  revision = "792786c7400a136282c1664665ae0a8db921c6c2"
+  version = "v1.0.0"
+
+[[projects]]
+  digest = "1:18752d0b95816a1b777505a97f71c7467a8445b8ffb55631a7bf779f6ba4fa83"
+  name = "github.com/stretchr/testify"
+  packages = ["assert"]
+  pruneopts = "UT"
+  revision = "f35b8ab0b5a2cef36673838d662e249dd9c94686"
+  version = "v1.2.2"
+
+[solve-meta]
+  analyzer-name = "dep"
+  analyzer-version = 1
+  input-imports = ["github.com/stretchr/testify/assert"]
+  solver-name = "gps-cdcl"
+  solver-version = 1
diff --git a/Gopkg.toml b/Gopkg.toml
new file mode 100644
index 0000000..844c8e7
--- /dev/null
+++ b/Gopkg.toml
@@ -0,0 +1,7 @@
+[prune]
+  go-tests = true
+  unused-packages = true
+
+[[constraint]]
+  name = "github.com/stretchr/testify"
+  version = "1.2.2"
diff --git a/boolean.go b/boolean.go
new file mode 100644
index 0000000..33fba38
--- /dev/null
+++ b/boolean.go
@@ -0,0 +1,27 @@
+package python3
+
+/*
+#include "Python.h"
+#include "macro.h"
+#include "type.h"
+*/
+import "C"
+
+//python boolean constants
+var (
+	Py_False = togo(C.Py_False)
+	Py_True  = togo(C.Py_True)
+)
+
+//Bool : https://docs.python.org/3/c-api/bool.html#c.PyBool_Type
+var Bool = togo(C._go_PyBool_Type)
+
+//PyBool_Check : https://docs.python.org/3/c-api/bool.html#c.PyBool_Check
+func PyBool_Check(o *PyObject) bool {
+	return C._go_PyBool_Check(toc(o)) != 0
+}
+
+//PyBool_FromLong : https://docs.python.org/3/c-api/bool.html#c.PyBool_FromLong
+func PyBool_FromLong(v int) *PyObject {
+	return togo(C.PyBool_FromLong(C.long(v)))
+}
diff --git a/boolean_test.go b/boolean_test.go
new file mode 100644
index 0000000..7eee22a
--- /dev/null
+++ b/boolean_test.go
@@ -0,0 +1,21 @@
+package python3
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestBoolCheck(t *testing.T) {
+	Py_Initialize()
+
+	assert.True(t, PyBool_Check(Py_True))
+	assert.True(t, PyBool_Check(Py_False))
+}
+
+func TestBoolFromLong(t *testing.T) {
+	Py_Initialize()
+
+	assert.Equal(t, Py_True, PyBool_FromLong(1))
+	assert.Equal(t, Py_False, PyBool_FromLong(0))
+}
diff --git a/dict.go b/dict.go
new file mode 100644
index 0000000..35ff74c
--- /dev/null
+++ b/dict.go
@@ -0,0 +1,121 @@
+package python3
+
+/*
+#include "Python.h"
+#include "macro.h"
+#include "type.h"
+*/
+import "C"
+import (
+	"unsafe"
+)
+
+//Dict : https://docs.python.org/3/c-api/dict.html#c.PyDict_Type
+var Dict = togo(C._go_PyDict_Type)
+
+//PyDict_Check : https://docs.python.org/3/c-api/dict.html#c.PyDict_Check
+func PyDict_Check(p *PyObject) bool {
+	return C._go_PyDict_Check(toc(p)) != 0
+}
+
+//PyDict_CheckExact : https://docs.python.org/3/c-api/dict.html#c.PyDict_CheckExact
+func PyDict_CheckExact(p *PyObject) bool {
+	return C._go_PyDict_CheckExact(toc(p)) != 0
+}
+
+//PyDict_New : https://docs.python.org/3/c-api/dict.html#c.PyDict_New
+func PyDict_New() *PyObject {
+	return togo(C.PyDict_New())
+}
+
+//PyDictProxy_New : https://docs.python.org/3/c-api/dict.html#c.PyDictProxy_New
+func PyDictProxy_New(mapping *PyObject) *PyObject {
+	return togo(C.PyDictProxy_New(toc(mapping)))
+}
+
+//PyDict_Clear : https://docs.python.org/3/c-api/dict.html#c.PyDict_Clear
+func PyDict_Clear(p *PyObject) {
+	C.PyDict_Clear(toc(p))
+}
+
+//PyDict_Contains : https://docs.python.org/3/c-api/dict.html#c.PyDict_Contains
+func PyDict_Contains(p, key *PyObject) int {
+	return int(C.PyDict_Contains(toc(p), toc(key)))
+}
+
+//PyDict_Copy : https://docs.python.org/3/c-api/dict.html#c.PyDict_Copy
+func PyDict_Copy(p *PyObject) *PyObject {
+	return togo(C.PyDict_Copy(toc(p)))
+}
+
+//PyDict_SetItem : https://docs.python.org/3/c-api/dict.html#c.PyDict_SetItem
+func PyDict_SetItem(p, key, val *PyObject) int {
+	return int(C.PyDict_SetItem(toc(p), toc(key), toc(val)))
+}
+
+//PyDict_SetItemString : https://docs.python.org/3/c-api/dict.html#c.PyDict_SetItemString
+func PyDict_SetItemString(p *PyObject, key string, val *PyObject) int {
+	ckey := C.CString(key)
+	defer C.free(unsafe.Pointer(ckey))
+	return int(C.PyDict_SetItemString(toc(p), ckey, toc(val)))
+}
+
+//PyDict_DelItem : https://docs.python.org/3/c-api/dict.html#c.PyDict_DelItem
+func PyDict_DelItem(p, key *PyObject) int {
+	return int(C.PyDict_DelItem(toc(p), toc(key)))
+}
+
+//PyDict_DelItemString : https://docs.python.org/3/c-api/dict.html#c.PyDict_DelItemString
+func PyDict_DelItemString(p *PyObject, key string) int {
+	ckey := C.CString(key)
+	defer C.free(unsafe.Pointer(ckey))
+	return int(C.PyDict_DelItemString(toc(p), ckey))
+}
+
+//PyDict_GetItem : https://docs.python.org/3/c-api/dict.html#c.PyDict_GetItem
+func PyDict_GetItem(p, key *PyObject) *PyObject {
+	return togo(C.PyDict_GetItem(toc(p), toc(key)))
+}
+
+//PyDict_GetItemWithError : https://docs.python.org/3/c-api/dict.html#c.PyDict_GetItemWithError
+func PyDict_GetItemWithError(p, key *PyObject) *PyObject {
+	return togo(C.PyDict_GetItemWithError(toc(p), toc(key)))
+}
+
+//PyDict_GetItemString : https://docs.python.org/3/c-api/dict.html#c.PyDict_GetItemString
+func PyDict_GetItemString(p *PyObject, key string) *PyObject {
+	ckey := C.CString(key)
+	defer C.free(unsafe.Pointer(ckey))
+
+	return togo(C.PyDict_GetItemString(toc(p), ckey))
+}
+
+//PyDict_SetDefault : https://docs.python.org/3/c-api/dict.html#c.PyDict_SetDefault
+func PyDict_SetDefault(p, key, pyDefault *PyObject) *PyObject {
+	return togo(C.PyDict_SetDefault(toc(p), toc(key), toc(pyDefault)))
+}
+
+//PyDict_Items : https://docs.python.org/3/c-api/dict.html#c.PyDict_Items
+func PyDict_Items(p *PyObject) *PyObject {
+	return togo(C.PyDict_Items(toc(p)))
+}
+
+//PyDict_Keys : https://docs.python.org/3/c-api/dict.html#c.PyDict_Keys
+func PyDict_Keys(p *PyObject) *PyObject {
+	return togo(C.PyDict_Keys(toc(p)))
+}
+
+//PyDict_Values : https://docs.python.org/3/c-api/dict.html#c.PyDict_Values
+func PyDict_Values(p *PyObject) *PyObject {
+	return togo(C.PyDict_Values(toc(p)))
+}
+
+//PyDict_Size : https://docs.python.org/3/c-api/dict.html#c.PyDict_Size
+func PyDict_Size(p *PyObject) int {
+	return int(C.PyDict_Size(toc(p)))
+}
+
+//PyDict_ClearFreeList : https://docs.python.org/3/c-api/dict.html#c.PyDict_ClearFreeList
+func PyDict_ClearFreeList() int {
+	return int(C.PyDict_ClearFreeList())
+}
diff --git a/dict_test.go b/dict_test.go
new file mode 100644
index 0000000..2b06c84
--- /dev/null
+++ b/dict_test.go
@@ -0,0 +1,89 @@
+package python3
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestDict(t *testing.T) {
+	Py_Initialize()
+
+	dict := PyDict_New()
+	assert.True(t, PyDict_Check(dict))
+	assert.True(t, PyDict_CheckExact(dict))
+	defer dict.DecRef()
+
+	proxy := PyDictProxy_New(dict)
+	assert.NotNil(t, proxy)
+	proxy.DecRef()
+
+	key1 := "key1"
+	value1 := PyUnicode_FromString("value1")
+	assert.NotNil(t, value1)
+	defer value1.DecRef()
+
+	key2 := PyUnicode_FromString("key2")
+	assert.NotNil(t, key2)
+	defer key2.DecRef()
+	value2 := PyUnicode_FromString("value2")
+	assert.NotNil(t, value2)
+	defer value2.DecRef()
+
+	key3 := PyUnicode_FromString("key3")
+	assert.NotNil(t, key3)
+	defer key3.DecRef()
+	value3 := PyUnicode_FromString("value3")
+	assert.NotNil(t, value3)
+	defer value3.DecRef()
+
+	err := PyDict_SetItem(dict, key2, value2)
+	assert.Zero(t, err)
+
+	err = PyDict_SetItemString(dict, key1, value1)
+	assert.Zero(t, err)
+
+	assert.Equal(t, value2, PyDict_GetItem(dict, key2))
+	assert.Equal(t, value2, PyDict_SetDefault(dict, key2, Py_None))
+	assert.Equal(t, value1, PyDict_GetItemString(dict, key1))
+	assert.Nil(t, PyDict_GetItemWithError(dict, key3))
+	b := PyDict_Contains(dict, key2) != 0
+	assert.True(t, b)
+
+	assert.Equal(t, 2, PyDict_Size(dict))
+
+	keys := PyDict_Keys(dict)
+	assert.True(t, PyList_Check(keys))
+	keys.DecRef()
+
+	values := PyDict_Values(dict)
+	assert.True(t, PyList_Check(values))
+	values.DecRef()
+
+	items := PyDict_Items(dict)
+	assert.True(t, PyList_Check(items))
+	items.DecRef()
+
+	err = PyDict_SetItem(dict, key3, value3)
+	assert.Zero(t, err)
+
+	newDict := PyDict_Copy(dict)
+	assert.Equal(t, 3, PyDict_Size(newDict))
+	defer newDict.DecRef()
+
+	err = PyDict_DelItem(dict, key2)
+	assert.Zero(t, err)
+
+	err = PyDict_DelItemString(dict, key1)
+	assert.Zero(t, err)
+
+	assert.Equal(t, 1, PyDict_Size(dict))
+
+	PyDict_Clear(dict)
+	assert.Equal(t, 0, PyDict_Size(dict))
+
+	dict.DecRef()
+
+	PyDict_ClearFreeList()
+
+}
diff --git a/helper.go b/helper.go
new file mode 100644
index 0000000..7d6261a
--- /dev/null
+++ b/helper.go
@@ -0,0 +1,16 @@
+package python3
+
+//go:generate go run script/variadic.go
+
+//#include "Python.h"
+import "C"
+
+//togo converts a *C.PyObject to a *PyObject
+func togo(cobject *C.PyObject) *PyObject {
+	return (*PyObject)(cobject)
+}
+
+func toc(object *PyObject) *C.PyObject {
+	return (*C.PyObject)(object)
+}
+
diff --git a/integer.go b/integer.go
new file mode 100644
index 0000000..704c328
--- /dev/null
+++ b/integer.go
@@ -0,0 +1,136 @@
+package python3
+
+/*
+#include "Python.h"
+#include "macro.h"
+#include "type.h"
+*/
+import "C"
+import (
+	"unsafe"
+)
+
+//Long : https://docs.python.org/3/c-api/long.html#c.PyLong_Type
+var Long = togo(C._go_PyLong_Type)
+
+//PyLong_Check : https://docs.python.org/3/c-api/long.html#c.PyLong_Check
+func PyLong_Check(p *PyObject) bool {
+	return C._go_PyLong_Check(toc(p)) != 0
+}
+
+//PyLong_CheckExact : https://docs.python.org/3/c-api/long.html#c.PyLong_CheckExact
+func PyLong_CheckExact(p *PyObject) bool {
+	return C._go_PyLong_CheckExact(toc(p)) != 0
+}
+
+//PyLong_FromLong : https://docs.python.org/3/c-api/long.html#c.PyLong_FromLong
+func PyLong_FromLong(v int) *PyObject {
+	return togo(C.PyLong_FromLong(C.long(v)))
+}
+
+//PyLong_FromUnsignedLong : https://docs.python.org/3/c-api/long.html#c.PyLong_FromUnsignedLong
+func PyLong_FromUnsignedLong(v uint) *PyObject {
+	return togo(C.PyLong_FromUnsignedLong(C.ulong(v)))
+}
+
+//PyLong_FromLongLong : https://docs.python.org/3/c-api/long.html#c.PyLong_FromLongLong
+func PyLong_FromLongLong(v int64) *PyObject {
+	return togo(C.PyLong_FromLongLong(C.longlong(v)))
+}
+
+//PyLong_FromUnsignedLongLong : https://docs.python.org/3/c-api/long.html#c.PyLong_FromUnsignedLongLong
+func PyLong_FromUnsignedLongLong(v uint64) *PyObject {
+	return togo(C.PyLong_FromUnsignedLongLong(C.ulonglong(v)))
+}
+
+//PyLong_FromDouble : https://docs.python.org/3/c-api/long.html#c.PyLong_FromDouble
+func PyLong_FromDouble(v float64) *PyObject {
+	return togo(C.PyLong_FromDouble(C.double(v)))
+}
+
+//PyLong_FromString : https://docs.python.org/3/c-api/long.html#c.PyLong_FromString
+func PyLong_FromString(str string, base int) *PyObject {
+	cstr := C.CString(str)
+	defer C.free(unsafe.Pointer(cstr))
+
+	return togo(C.PyLong_FromString(cstr, nil, C.int(base)))
+}
+
+//PyLong_FromUnicodeObject : https://docs.python.org/3/c-api/long.html#c.PyLong_FromUnicodeObject
+func PyLong_FromUnicodeObject(u *PyObject, base int) *PyObject {
+	return togo(C.PyLong_FromUnicodeObject(toc(u), C.int(base)))
+}
+
+//PyLong_FromGoInt ensures the go integer type does not overflow
+func PyLong_FromGoInt(v int) *PyObject {
+	return togo(C.PyLong_FromLongLong(C.longlong(v)))
+}
+
+//PyLong_FromGoUint ensures the go integer type does not overflow
+func PyLong_FromGoUint(v uint) *PyObject {
+	return togo(C.PyLong_FromUnsignedLongLong(C.ulonglong(v)))
+}
+
+//PyLong_FromGoInt64 ensures the go integer type does not overflow
+func PyLong_FromGoInt64(v int64) *PyObject {
+	return togo(C.PyLong_FromLongLong(C.longlong(v)))
+}
+
+//PyLong_FromGoUint64 ensures the go integer type does not overflow
+func PyLong_FromGoUint64(v uint64) *PyObject {
+	return togo(C.PyLong_FromUnsignedLongLong(C.ulonglong(v)))
+}
+
+//PyLong_FromGoFloat64 ensures the go integer type does not overflow
+func PyLong_FromGoFloat64(v float64) *PyObject {
+	return togo(C.PyLong_FromDouble(C.double(v)))
+}
+
+//PyLong_AsLong : https://docs.python.org/3/c-api/long.html#c.PyLong_AsLong
+func PyLong_AsLong(obj *PyObject) int {
+	return int(C.PyLong_AsLong(toc(obj)))
+}
+
+//PyLong_AsLongAndOverflow : https://docs.python.org/3/c-api/long.html#c.PyLong_AsLongAndOverflow
+func PyLong_AsLongAndOverflow(obj *PyObject) (int, int) {
+	overflow := C.int(0)
+	ret := C.PyLong_AsLongAndOverflow(toc(obj), &overflow)
+	return int(ret), int(overflow)
+}
+
+//PyLong_AsLongLong : https://docs.python.org/3/c-api/long.html#c.PyLong_AsLongLong
+func PyLong_AsLongLong(obj *PyObject) int64 {
+	return int64(C.PyLong_AsLongLong(toc(obj)))
+}
+
+//PyLong_AsLongLongAndOverflow : https://docs.python.org/3/c-api/long.html#c.PyLong_AsLongLongAndOverflow
+func PyLong_AsLongLongAndOverflow(obj *PyObject) (int64, int) {
+	overflow := C.int(0)
+	ret := C.PyLong_AsLongLongAndOverflow(toc(obj), &overflow)
+	return int64(ret), int(overflow)
+}
+
+//PyLong_AsUnsignedLong : https://docs.python.org/3/c-api/long.html#c.PyLong_AsUnsignedLong
+func PyLong_AsUnsignedLong(obj *PyObject) uint {
+	return uint(C.PyLong_AsUnsignedLong(toc(obj)))
+}
+
+//PyLong_AsUnsignedLongLong : https://docs.python.org/3/c-api/long.html#c.PyLong_AsUnsignedLongLong
+func PyLong_AsUnsignedLongLong(obj *PyObject) uint64 {
+	return uint64(C.PyLong_AsUnsignedLongLong(toc(obj)))
+}
+
+//PyLong_AsUnsignedLongMask : https://docs.python.org/3/c-api/long.html#c.PyLong_AsUnsignedLongMask
+func PyLong_AsUnsignedLongMask(obj *PyObject) uint {
+	return uint(C.PyLong_AsUnsignedLongMask(toc(obj)))
+}
+
+//PyLong_AsUnsignedLongLongMask : https://docs.python.org/3/c-api/long.html#c.PyLong_AsUnsignedLongLongMask
+func PyLong_AsUnsignedLongLongMask(obj *PyObject) uint64 {
+	return uint64(C.PyLong_AsUnsignedLongLongMask(toc(obj)))
+}
+
+//PyLong_AsDouble : https://docs.python.org/3/c-api/long.html#c.PyLong_AsDouble
+func PyLong_AsDouble(obj *PyObject) float64 {
+	return float64(C.PyLong_AsDouble(toc(obj)))
+}
diff --git a/integer_test.go b/integer_test.go
new file mode 100644
index 0000000..68c2e5b
--- /dev/null
+++ b/integer_test.go
@@ -0,0 +1,121 @@
+package python3
+
+import (
+	"strconv"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestPyLongCheck(t *testing.T) {
+	Py_Initialize()
+
+	pyLong := PyLong_FromGoInt(345)
+	assert.True(t, PyLong_Check(pyLong))
+	assert.True(t, PyLong_CheckExact(pyLong))
+	pyLong.DecRef()
+}
+
+func TestPyLongFromAsLong(t *testing.T) {
+	Py_Initialize()
+	v := 2354
+	pyLong := PyLong_FromLong(v)
+	assert.NotNil(t, pyLong)
+	assert.Equal(t, v, PyLong_AsLong(pyLong))
+	pyLong.DecRef()
+}
+
+func TestPyLongFromAsUnsignedLong(t *testing.T) {
+	Py_Initialize()
+	v := uint(2354)
+	pyLong := PyLong_FromUnsignedLong(v)
+	assert.NotNil(t, pyLong)
+	assert.Equal(t, v, PyLong_AsUnsignedLong(pyLong))
+	pyLong.DecRef()
+}
+
+func TestPyLongFromAsLongLong(t *testing.T) {
+	Py_Initialize()
+	v := int64(2354)
+	pyLong := PyLong_FromLongLong(v)
+	assert.NotNil(t, pyLong)
+	assert.Equal(t, v, PyLong_AsLongLong(pyLong))
+	pyLong.DecRef()
+}
+
+func TestPyLongFromAsUnsignedLongLong(t *testing.T) {
+	Py_Initialize()
+	v := uint64(2354)
+	pyLong := PyLong_FromUnsignedLongLong(v)
+	assert.NotNil(t, pyLong)
+	assert.Equal(t, v, PyLong_AsUnsignedLongLong(pyLong))
+	pyLong.DecRef()
+}
+
+func TestPyLongFromAsDouble(t *testing.T) {
+	Py_Initialize()
+	v := float64(2354.0)
+	pyLong := PyLong_FromDouble(v)
+	assert.NotNil(t, pyLong)
+	assert.Equal(t, v, PyLong_AsDouble(pyLong))
+	pyLong.DecRef()
+}
+
+func TestPyLongFromAsString(t *testing.T) {
+	Py_Initialize()
+	v := 2354
+	s := strconv.Itoa(v)
+	pyLong := PyLong_FromString(s, 10)
+	assert.NotNil(t, pyLong)
+	assert.Equal(t, v, PyLong_AsLong(pyLong))
+	pyLong.DecRef()
+}
+
+func TestPyLongFromAsUnicodeObject(t *testing.T) {
+	Py_Initialize()
+	v := 2354
+	s := strconv.Itoa(v)
+	pyUnicode := PyUnicode_FromString(s)
+	assert.NotNil(t, pyUnicode)
+	pyLong := PyLong_FromUnicodeObject(pyUnicode, 10)
+	assert.NotNil(t, pyLong)
+	assert.Equal(t, v, PyLong_AsLong(pyLong))
+	pyLong.DecRef()
+	pyUnicode.DecRef()
+}
+
+func TestPyLongFromAsGoInt(t *testing.T) {
+	Py_Initialize()
+	v := 2354
+	pyLong := PyLong_FromGoInt(v)
+	assert.NotNil(t, pyLong)
+	assert.Equal(t, v, PyLong_AsLong(pyLong))
+	pyLong.DecRef()
+}
+
+func TestPyLongFromAsGoUint(t *testing.T) {
+	Py_Initialize()
+	v := uint(2354)
+	pyLong := PyLong_FromGoUint(v)
+	assert.NotNil(t, pyLong)
+	assert.Equal(t, v, PyLong_AsUnsignedLong(pyLong))
+	pyLong.DecRef()
+}
+
+func TestPyLongFromAsGoInt64(t *testing.T) {
+	Py_Initialize()
+	v := int64(2354)
+	pyLong := PyLong_FromGoInt64(v)
+	assert.NotNil(t, pyLong)
+	assert.Equal(t, v, PyLong_AsLongLong(pyLong))
+	pyLong.DecRef()
+}
+
+func TestPyLongFromAsGoUint64(t *testing.T) {
+	Py_Initialize()
+	v := uint64(2354)
+	pyLong := PyLong_FromGoUint64(v)
+	assert.NotNil(t, pyLong)
+	assert.Equal(t, v, PyLong_AsUnsignedLongLong(pyLong))
+	pyLong.DecRef()
+}
diff --git a/list.go b/list.go
new file mode 100644
index 0000000..4d9a501
--- /dev/null
+++ b/list.go
@@ -0,0 +1,81 @@
+package python3
+
+/*
+#include "Python.h"
+#include "macro.h"
+#include "type.h"
+*/
+import "C"
+
+//List : https://docs.python.org/3/c-api/list.html#c.PyList_Type
+var List = togo(C._go_PyList_Type)
+
+//PyList_Check : https://docs.python.org/3/c-api/list.html#c.PyList_Check
+func PyList_Check(p *PyObject) bool {
+	return C._go_PyList_Check(toc(p)) != 0
+}
+
+//PyList_CheckExact : https://docs.python.org/3/c-api/list.html#c.PyList_CheckExact
+func PyList_CheckExact(p *PyObject) bool {
+	return C._go_PyList_CheckExact(toc(p)) != 0
+}
+
+//PyList_New : https://docs.python.org/3/c-api/list.html#c.PyList_New
+func PyList_New(len int) *PyObject {
+	return togo(C.PyList_New(C.Py_ssize_t(len)))
+}
+
+//PyList_Size : https://docs.python.org/3/c-api/list.html#c.PyList_Size
+func PyList_Size(p *PyObject) int {
+	return int(C.PyList_Size(toc(p)))
+}
+
+//PyList_GetItem : https://docs.python.org/3/c-api/list.html#c.PyList_GetItem
+func PyList_GetItem(p *PyObject, pos int) *PyObject {
+	return togo(C.PyList_GetItem(toc(p), C.Py_ssize_t(pos)))
+}
+
+//PyList_SetItem : https://docs.python.org/3/c-api/list.html#c.PyList_SetItem
+func PyList_SetItem(p *PyObject, pos int, o *PyObject) {
+	C.PyList_SetItem(toc(p), C.Py_ssize_t(pos), toc(o))
+}
+
+//PyList_Insert : https://docs.python.org/3/c-api/list.html#c.PyList_Insert
+func PyList_Insert(p *PyObject, index int, item *PyObject) int {
+	return int(C.PyList_Insert(toc(p), C.Py_ssize_t(index), toc(item)))
+}
+
+//PyList_Append : https://docs.python.org/3/c-api/list.html#c.PyList_Append
+func PyList_Append(p, item *PyObject) int {
+	return int(C.PyList_Append(toc(p), toc(item)))
+}
+
+//PyList_GetSlice : https://docs.python.org/3/c-api/list.html#c.PyList_GetSlice
+func PyList_GetSlice(p *PyObject, low, high int) *PyObject {
+	return togo(C.PyList_GetSlice(toc(p), C.Py_ssize_t(low), C.Py_ssize_t(high)))
+}
+
+//PyList_SetSlice : https://docs.python.org/3/c-api/list.html#c.PyList_SetSlice
+func PyList_SetSlice(p *PyObject, low, high int, itemlist *PyObject) int {
+	return int(C.PyList_SetSlice(toc(p), C.Py_ssize_t(low), C.Py_ssize_t(high), toc(itemlist)))
+}
+
+//PyList_Sort : https://docs.python.org/3/c-api/list.html#c.PyList_Sort
+func PyList_Sort(list *PyObject) int {
+	return int(C.PyList_Sort(toc(list)))
+}
+
+//PyList_Reverse : https://docs.python.org/3/c-api/list.html#c.PyList_Reverse
+func PyList_Reverse(list *PyObject) int {
+	return int(C.PyList_Reverse(toc(list)))
+}
+
+//PyList_AsTuple : https://docs.python.org/3/c-api/list.html#c.PyList_AsTuple
+func PyList_AsTuple(list *PyObject) *PyObject {
+	return togo(C.PyList_AsTuple(toc(list)))
+}
+
+//PyList_ClearFreeList : https://docs.python.org/3/c-api/list.html#c.PyList_ClearFreeList
+func PyList_ClearFreeList() int {
+	return int(C.PyList_ClearFreeList())
+}
diff --git a/macro.c b/macro.c
new file mode 100644
index 0000000..cd243cf
--- /dev/null
+++ b/macro.c
@@ -0,0 +1,105 @@
+#include "macro.h"
+
+int _go_Py_EnterRecursiveCall(const char *where) {
+    return Py_EnterRecursiveCall(where);
+}
+
+void _go_Py_LeaveRecursiveCall() {
+    Py_LeaveRecursiveCall();
+}
+
+int _go_PyType_Check(PyObject *o) {
+    return PyType_Check(o);
+}
+int _go_PyType_CheckExact(PyObject *o) {
+    return PyType_CheckExact(o);
+}
+
+
+
+int _go_PyLong_Check(PyObject *p) {
+    return PyLong_Check(p);
+}
+int _go_PyLong_CheckExact(PyObject *p) {
+    return PyLong_CheckExact(p);
+}
+
+int _go_PyBool_Check(PyObject *o) {
+    return PyBool_Check(o);
+}
+
+int _go_PyFloat_Check(PyObject *p) {
+    return PyFloat_Check(p);
+}
+
+int _go_PyFloat_CheckExact(PyObject *p) {
+    return PyFloat_CheckExact(p);
+}
+
+int _go_PyComplex_Check(PyObject *p) {
+    return PyComplex_Check(p);
+}
+
+int _go_PyComplex_CheckExact(PyObject *p) {
+    return PyComplex_CheckExact(p);
+}
+
+int _go_PyBytes_Check(PyObject *o) {
+    return PyBytes_Check(o);
+}
+int _go_PyBytes_CheckExact(PyObject *o) {
+    return PyBytes_CheckExact(o);
+}
+
+int _go_PyByteArray_Check(PyObject *o) {
+    return PyByteArray_Check(o);
+}
+int _go_PyByteArray_CheckExact(PyObject *o) {
+    return PyByteArray_CheckExact(o);
+}
+
+int _go_PyUnicode_Check(PyObject *o) {
+    return PyUnicode_Check(o);
+}
+int _go_PyUnicode_CheckExact(PyObject *o) {
+    return PyUnicode_CheckExact(o);
+}
+
+int _go_PyTuple_Check(PyObject *p) {
+    return PyTuple_Check(p);
+}
+int _go_PyTuple_CheckExact(PyObject *p) {
+    return PyTuple_CheckExact(p);
+}
+
+int _go_PyList_Check(PyObject *p) {
+    return PyList_Check(p);
+}
+int _go_PyList_CheckExact(PyObject *p) {
+    return PyList_CheckExact(p);
+}
+
+int _go_PyDict_Check(PyObject *p) {
+    return PyDict_Check(p);
+}
+int _go_PyDict_CheckExact(PyObject *p) {
+    return PyDict_CheckExact(p);
+}
+
+int _go_PyModule_Check(PyObject *p) {
+    return PyModule_Check(p);
+}
+int _go_PyModule_CheckExact(PyObject *p) {
+    return PyModule_CheckExact(p);
+}
+
+int _go_PyObject_DelAttr(PyObject *o, PyObject *attr_name) {
+    return PyObject_DelAttr(o, attr_name);
+}
+int _go_PyObject_DelAttrString(PyObject *o, const char *attr_name) {
+    return PyObject_DelAttrString(o, attr_name);
+}
+
+int _go_PyObject_TypeCheck(PyObject *o, PyTypeObject *type) {
+    return PyObject_TypeCheck(o, type);
+}
\ No newline at end of file
diff --git a/macro.h b/macro.h
new file mode 100644
index 0000000..ca7486a
--- /dev/null
+++ b/macro.h
@@ -0,0 +1,49 @@
+#ifndef MACRO_H
+#define MACRO_H
+
+#include "Python.h"
+
+int _go_Py_EnterRecursiveCall(const char *where);
+void _go_Py_LeaveRecursiveCall();
+
+int _go_PyType_Check(PyObject *o);
+int _go_PyType_CheckExact(PyObject *o);
+
+int _go_PyLong_Check(PyObject *p);
+int _go_PyLong_CheckExact(PyObject *p);
+
+int _go_PyBool_Check(PyObject *o);
+
+int _go_PyFloat_Check(PyObject *p);
+int _go_PyFloat_CheckExact(PyObject *p);
+
+int _go_PyComplex_Check(PyObject *p);
+int _go_PyComplex_CheckExact(PyObject *p);
+
+int _go_PyBytes_Check(PyObject *o);
+int _go_PyBytes_CheckExact(PyObject *o);
+
+int _go_PyByteArray_Check(PyObject *o);
+int _go_PyByteArray_CheckExact(PyObject *o);
+
+int _go_PyUnicode_Check(PyObject *o);
+int _go_PyUnicode_CheckExact(PyObject *o);
+
+int _go_PyTuple_Check(PyObject *p);
+int _go_PyTuple_CheckExact(PyObject *p);
+
+int _go_PyList_Check(PyObject *p);
+int _go_PyList_CheckExact(PyObject *p);
+
+int _go_PyDict_Check(PyObject *p);
+int _go_PyDict_CheckExact(PyObject *p);
+
+int _go_PyModule_Check(PyObject *p);
+int _go_PyModule_CheckExact(PyObject *p);
+
+int _go_PyObject_DelAttr(PyObject *o, PyObject *attr_name);
+int _go_PyObject_DelAttrString(PyObject *o, const char *attr_name);
+
+int _go_PyObject_TypeCheck(PyObject *o, PyTypeObject *type);
+
+#endif
\ No newline at end of file
diff --git a/object.go b/object.go
new file mode 100644
index 0000000..d9088c1
--- /dev/null
+++ b/object.go
@@ -0,0 +1,261 @@
+package python3
+
+//go:generate go run script/variadic.go
+
+/*
+#include "Python.h"
+#include "macro.h"
+#include "variadic.h"
+*/
+import "C"
+import (
+	"unsafe"
+)
+
+//MaxVariadicLength is the maximum number of arguments that can be passed to a variadic C function due to a cgo limitation
+const MaxVariadicLength = 20
+
+// Constants used for comparison in PyObject_RichCompareBool
+var (
+	Py_LT = int(C.Py_LT)
+	Py_LE = int(C.Py_LE)
+	Py_EQ = int(C.Py_EQ)
+	Py_NE = int(C.Py_NE)
+	Py_GT = int(C.Py_GT)
+	Py_GE = int(C.Py_GE)
+)
+
+//None : https://docs.python.org/3/c-api/none.html#c.Py_None
+var Py_None = togo(C.Py_None)
+
+//PyObject : https://docs.python.org/3/c-api/structures.html?highlight=pyobject#c.PyObject
+type PyObject C.PyObject
+
+//IncRef : https://docs.python.org/3/c-api/refcounting.html#c.Py_INCREF
+func (pyObject *PyObject) IncRef() {
+	C.Py_IncRef(toc(pyObject))
+}
+
+//DecRef : https://docs.python.org/3/c-api/refcounting.html#c.Py_DECREF
+func (pyObject *PyObject) DecRef() {
+	C.Py_DecRef(toc(pyObject))
+}
+
+//ReprEnter : https://docs.python.org/3/c-api/exceptions.html#c.Py_ReprEnter
+func (pyObject *PyObject) ReprEnter() int {
+	return int(C.Py_ReprEnter(toc(pyObject)))
+}
+
+//ReprLeave : https://docs.python.org/3/c-api/exceptions.html#c.Py_ReprLeave
+func (pyObject *PyObject) ReprLeave() {
+	C.Py_ReprLeave(toc(pyObject))
+}
+
+//HasAttr : https://docs.python.org/3/c-api/object.html#c.PyObject_HasAttr
+func (pyObject *PyObject) HasAttr(attr_name *PyObject) bool {
+	return C.PyObject_HasAttr(toc(pyObject), toc(attr_name)) == 1
+}
+
+//HasAttrString : https://docs.python.org/3/c-api/object.html#c.PyObject_HasAttrString
+func (pyObject *PyObject) HasAttrString(attr_name string) bool {
+	cattr_name := C.CString(attr_name)
+	defer C.free(unsafe.Pointer(cattr_name))
+
+	return C.PyObject_HasAttrString(toc(pyObject), cattr_name) == 1
+}
+
+//GetAttr : https://docs.python.org/3/c-api/object.html#c.PyObject_GetAttr
+func (pyObject *PyObject) GetAttr(attr_name *PyObject) *PyObject {
+	return togo(C.PyObject_GetAttr(toc(pyObject), toc(attr_name)))
+}
+
+//GetAttrString : https://docs.python.org/3/c-api/object.html#c.PyObject_GetAttrString
+func (pyObject *PyObject) GetAttrString(attr_name string) *PyObject {
+	cattr_name := C.CString(attr_name)
+	defer C.free(unsafe.Pointer(cattr_name))
+
+	return togo(C.PyObject_GetAttrString(toc(pyObject), cattr_name))
+}
+
+//SetAttr : https://docs.python.org/3/c-api/object.html#c.PyObject_SetAttr
+func (pyObject *PyObject) SetAttr(attr_name *PyObject, v *PyObject) {
+
+	C.PyObject_SetAttr(toc(pyObject), toc(attr_name), toc(v))
+}
+
+//SetAttrString : https://docs.python.org/3/c-api/object.html#c.PyObject_SetAttrString
+func (pyObject *PyObject) SetAttrString(attr_name string, v *PyObject) int {
+	cattr_name := C.CString(attr_name)
+	defer C.free(unsafe.Pointer(cattr_name))
+
+	return int(C.PyObject_SetAttrString(toc(pyObject), cattr_name, toc(v)))
+}
+
+//DelAttr : https://docs.python.org/3/c-api/object.html#c.PyObject_DelAttr
+func (pyObject *PyObject) DelAttr(attr_name *PyObject) {
+	C._go_PyObject_DelAttr(toc(pyObject), toc(attr_name))
+}
+
+//DelAttrString : https://docs.python.org/3/c-api/object.html#c.PyObject_DelAttrString
+func (pyObject *PyObject) DelAttrString(attr_name string) {
+	cattr_name := C.CString(attr_name)
+	defer C.free(unsafe.Pointer(cattr_name))
+
+	C._go_PyObject_DelAttrString(toc(pyObject), cattr_name)
+}
+
+//RichCompare : https://docs.python.org/3/c-api/object.html#c.PyObject_RichCompare
+func (pyObject *PyObject) RichCompare(o *PyObject, opid int) *PyObject {
+	return togo(C.PyObject_RichCompare(toc(pyObject), toc(o), C.int(opid)))
+}
+
+//RichCompareBool : https://docs.python.org/3/c-api/object.html#c.PyObject_RichCompareBool
+func (pyObject *PyObject) RichCompareBool(o *PyObject, opid int) int {
+	return int(C.PyObject_RichCompareBool(toc(pyObject), toc(o), C.int(opid)))
+}
+
+//Repr : https://docs.python.org/3/c-api/object.html#c.PyObject_Repr
+func (pyObject *PyObject) Repr() *PyObject {
+	return togo(C.PyObject_Repr(toc(pyObject)))
+}
+
+//ASCII : https://docs.python.org/3/c-api/object.html#c.PyObject_ASCII
+func (pyObject *PyObject) ASCII() *PyObject {
+	return togo(C.PyObject_ASCII(toc(pyObject)))
+}
+
+//Str : https://docs.python.org/3/c-api/object.html#c.PyObject_Str
+func (pyObject *PyObject) Str() *PyObject {
+	return togo(C.PyObject_Str(toc(pyObject)))
+}
+
+//Bytes : https://docs.python.org/3/c-api/object.html#c.PyObject_Bytes
+func (pyObject *PyObject) Bytes() *PyObject {
+	return togo(C.PyObject_Bytes(toc(pyObject)))
+}
+
+//IsSubclass : https://docs.python.org/3/c-api/object.html#c.PyObject_IsSubclass
+func (pyObject *PyObject) IsSubclass(cls *PyObject) int {
+	return int(C.PyObject_IsSubclass(toc(pyObject), toc(cls)))
+}
+
+//IsInstance : https://docs.python.org/3/c-api/object.html#c.PyObject_IsInstance
+func (pyObject *PyObject) IsInstance(cls *PyObject) int {
+	return int(C.PyObject_IsInstance(toc(pyObject), toc(cls)))
+}
+
+// PyCallable_Check : https://docs.python.org/3/c-api/object.html#c.PyCallable_Check
+func PyCallable_Check(o *PyObject) bool {
+	return C.PyCallable_Check(toc(o)) == 1
+}
+
+//Call : https://docs.python.org/3/c-api/object.html#c.PyObject_Call
+func (pyObject *PyObject) Call(args *PyObject, kwargs *PyObject) *PyObject {
+	return togo(C.PyObject_Call(toc(pyObject), toc(args), toc(kwargs)))
+}
+
+//CallObject : https://docs.python.org/3/c-api/object.html#c.PyObject_CallObject
+func (pyObject *PyObject) CallObject(args *PyObject) *PyObject {
+	return togo(C.PyObject_CallObject(toc(pyObject), toc(args)))
+}
+
+//CallFunctionObjArgs : https://docs.python.org/3/c-api/object.html#c.PyObject_CallFunctionObjArgs
+func (pyObject *PyObject) CallFunctionObjArgs(args ...*PyObject) *PyObject {
+
+	if len(args) > MaxVariadicLength {
+		panic("CallFunctionObjArgs: too many arrguments")
+	}
+	if len(args) == 0 {
+		return togo(C._go_PyObject_CallFunctionObjArgs(toc(pyObject), 0, (**C.PyObject)(nil)))
+	}
+
+	cargs := make([]*C.PyObject, len(args), len(args))
+	for i, arg := range args {
+		cargs[i] = toc(arg)
+	}
+	return togo(C._go_PyObject_CallFunctionObjArgs(toc(pyObject), C.int(len(args)), (**C.PyObject)(unsafe.Pointer(&cargs[0]))))
+}
+
+//CallMethodObjArgs : https://docs.python.org/3/c-api/object.html#c.PyObject_CallMethodObjArgs
+func (pyObject *PyObject) CallMethodObjArgs(name *PyObject, args ...*PyObject) *PyObject {
+	if len(args) > MaxVariadicLength {
+		panic("CallMethodObjArgs: too many arguments")
+	}
+	if len(args) == 0 {
+		return togo(C._go_PyObject_CallMethodObjArgs(toc(pyObject), toc(name), 0, (**C.PyObject)(nil)))
+	}
+
+	cargs := make([]*C.PyObject, len(args), len(args))
+	for i, arg := range args {
+		cargs[i] = toc(arg)
+	}
+	return togo(C._go_PyObject_CallMethodObjArgs(toc(pyObject), toc(name), C.int(len(args)), (**C.PyObject)(unsafe.Pointer(&cargs[0]))))
+}
+
+//CallMethodArgs : same as CallMethodObjArgs but with name as go string
+func (pyObject *PyObject) CallMethodArgs(name string, args ...*PyObject) *PyObject {
+	pyName := PyUnicode_FromString(name)
+	defer pyName.DecRef()
+
+	return pyObject.CallMethodObjArgs(pyName, args...)
+}
+
+//Hash : https://docs.python.org/3/c-api/object.html#c.PyObject_Hash
+func (pyObject *PyObject) Hash() int {
+	return int(C.PyObject_Hash(toc(pyObject)))
+}
+
+//HashNotImplemented : https://docs.python.org/3/c-api/object.html#c.PyObject_HashNotImplemented
+func (pyObject *PyObject) HashNotImplemented() int {
+	return int(C.PyObject_HashNotImplemented(toc(pyObject)))
+}
+
+//IsTrue : https://docs.python.org/3/c-api/object.html#c.PyObject_IsTrue
+func (pyObject *PyObject) IsTrue() int {
+	return int(C.PyObject_IsTrue(toc(pyObject)))
+}
+
+//Not : https://docs.python.org/3/c-api/object.html#c.PyObject_Not
+func (pyObject *PyObject) Not() int {
+	return int(C.PyObject_Not(toc(pyObject)))
+}
+
+//Type : https://docs.python.org/3/c-api/object.html#c.PyObject_Type
+func (pyObject *PyObject) Type() *PyObject {
+	return togo(C.PyObject_Type(toc(pyObject)))
+}
+
+//Length : https://docs.python.org/3/c-api/object.html#c.PyObject_Length
+func (pyObject *PyObject) Length() int {
+	return int(C.PyObject_Length(toc(pyObject)))
+}
+
+//LengthHint : https://docs.python.org/3/c-api/object.html#c.PyObject_LengthHint
+func (pyObject *PyObject) LengthHint(pyDefault int) int {
+	return int(C.PyObject_LengthHint(toc(pyObject), C.Py_ssize_t(pyDefault)))
+}
+
+//GetItem : https://docs.python.org/3/c-api/object.html#c.PyObject_GetItem
+func (pyObject *PyObject) GetItem(key *PyObject) *PyObject {
+	return togo(C.PyObject_GetItem(toc(pyObject), toc(key)))
+}
+
+//SetItem : https://docs.python.org/3/c-api/object.html#c.PyObject_SetItem
+func (pyObject *PyObject) SetItem(key, v *PyObject) int {
+	return int(C.PyObject_SetItem(toc(pyObject), toc(key), toc(v)))
+}
+
+//DelItem : https://docs.python.org/3/c-api/object.html#c.PyObject_DelItem
+func (pyObject *PyObject) DelItem(key *PyObject) int {
+	return int(C.PyObject_DelItem(toc(pyObject), toc(key)))
+}
+
+//Dir : https://docs.python.org/3/c-api/object.html#c.PyObject_Dir
+func (pyObject *PyObject) Dir() *PyObject {
+	return togo(C.PyObject_Dir(toc(pyObject)))
+}
+
+//GetIter : https://docs.python.org/3/c-api/object.html#c.PyObject_GetIter
+func (pyObject *PyObject) GetIter() *PyObject {
+	return togo(C.PyObject_GetIter(toc(pyObject)))
+}
diff --git a/script/variadic.go b/script/variadic.go
new file mode 100644
index 0000000..07ad01e
--- /dev/null
+++ b/script/variadic.go
@@ -0,0 +1,64 @@
+package main
+
+import (
+	"flag"
+	"fmt"
+	"os"
+
+	python "github.com/DataDog/go-python3"
+)
+
+var (
+	output     = flag.String("o", "variadic.c", "output file")
+	caseNumber = flag.Int("n", python.MaxVariadicLength, "number of case in the switch statement")
+)
+
+func main() {
+	flag.Parse()
+
+	out, err := os.Create(*output)
+	if err != nil {
+		fmt.Printf("Error opening file %s: %s", *output, err)
+		os.Exit(1)
+	}
+	defer out.Close()
+
+	_, err = out.WriteString("#include \"Python.h\"\n\n")
+	if err != nil {
+		fmt.Printf("Error writing to file %s: %s", *output, err)
+		os.Exit(1)
+	}
+	out.WriteString(renderTemplate(*caseNumber, "PyObject_CallFunctionObjArgs", "callable"))
+	out.WriteString(renderTemplate(*caseNumber, "PyObject_CallMethodObjArgs", "obj", "name"))
+
+}
+
+func renderTemplate(n int, functionName string, pyArgs ...string) string {
+	template :=
+		`PyObject* _go_%s(%sint argc, PyObject **argv) {
+
+    PyObject *result = NULL;
+    switch (argc) {
+%s    }
+    return result;
+}
+`
+	args := ""
+	for _, arg := range pyArgs {
+		args += fmt.Sprintf("PyObject *%s, ", arg)
+	}
+	switchTemplate := ""
+	for i := 0; i < n+1; i++ {
+		switchTemplate += fmt.Sprintf("        case %d:\n", i)
+		args := ""
+		for _, arg := range pyArgs {
+			args += fmt.Sprintf("%s, ", arg)
+		}
+		for j := 0; j < i; j++ {
+			args += fmt.Sprintf("argv[%d], ", j)
+		}
+		args += "NULL"
+		switchTemplate += fmt.Sprintf("            return %s(%s);\n", functionName, args)
+	}
+	return fmt.Sprintf(template, functionName, args, switchTemplate)
+}
diff --git a/tuple.go b/tuple.go
new file mode 100644
index 0000000..aecd0a3
--- /dev/null
+++ b/tuple.go
@@ -0,0 +1,47 @@
+package python3
+
+/*
+#include "Python.h"
+#include "macro.h"
+#include "type.h"
+*/
+import "C"
+
+//Tuple : https://docs.python.org/3/c-api/tuple.html#c.PyTuple_Type
+var Tuple = togo(C._go_PyTuple_Type)
+
+//PyTuple_Check : https://docs.python.org/3/c-api/tuple.html#c.PyTuple_Check
+func PyTuple_Check(p *PyObject) bool {
+	return C._go_PyTuple_Check(toc(p)) != 0
+}
+
+//PyTuple_CheckExact : https://docs.python.org/3/c-api/tuple.html#c.PyTuple_CheckExact
+func PyTuple_CheckExact(p *PyObject) bool {
+	return C._go_PyTuple_CheckExact(toc(p)) != 0
+}
+
+//PyTuple_New : https://docs.python.org/3/c-api/tuple.html#c.PyTuple_New
+func PyTuple_New(len int) *PyObject {
+	return togo(C.PyTuple_New(C.Py_ssize_t(len)))
+}
+
+//PyTuple_Size : https://docs.python.org/3/c-api/tuple.html#c.PyTuple_Size
+func PyTuple_Size(p *PyObject) int {
+	return int(C.PyTuple_Size(toc(p)))
+}
+
+//PyTuple_GetItem : https://docs.python.org/3/c-api/tuple.html#c.PyTuple_GetItem
+func PyTuple_GetItem(p *PyObject, pos int) *PyObject {
+	return togo(C.PyTuple_GetItem(toc(p), C.Py_ssize_t(pos)))
+}
+
+//PyTuple_GetSlice : https://docs.python.org/3/c-api/tuple.html#c.PyTuple_GetSlice
+func PyTuple_GetSlice(p *PyObject, low, high int) *PyObject {
+	return togo(C.PyTuple_GetSlice(toc(p), C.Py_ssize_t(low), C.Py_ssize_t(high)))
+}
+
+//PyTuple_SetItem : https://docs.python.org/3/c-api/tuple.html#c.PyTuple_SetItem
+func PyTuple_SetItem(p *PyObject, pos int, o *PyObject) {
+	C.PyTuple_SetItem(toc(p), C.Py_ssize_t(pos), toc(o))
+}
+
diff --git a/type.c b/type.c
new file mode 100644
index 0000000..a864dc9
--- /dev/null
+++ b/type.c
@@ -0,0 +1,17 @@
+#include "type.h"
+
+PyObject *_go_PyType_Type = (PyObject *)&PyType_Type;
+PyObject *_go_PyLong_Type = (PyObject *)&PyLong_Type;
+PyObject *_go_PyBool_Type = (PyObject *)&PyBool_Type;
+PyObject *_go_PyFloat_Type = (PyObject *)&PyFloat_Type;
+PyObject *_go_PyComplex_Type = (PyObject *)&PyComplex_Type;
+
+PyObject *_go_PyBytes_Type = (PyObject *)&PyBytes_Type;
+PyObject *_go_PyByteArray_Type = (PyObject *)&PyByteArray_Type;
+PyObject *_go_PyUnicode_Type = (PyObject *)&PyUnicode_Type;
+PyObject *_go_PyTuple_Type = (PyObject *)&PyTuple_Type;
+PyObject *_go_PyList_Type = (PyObject *)&PyList_Type;
+
+PyObject *_go_PyDict_Type = (PyObject *)&PyDict_Type;
+
+PyObject *_go_PyModule_Type = (PyObject *)&PyModule_Type;
diff --git a/type.h b/type.h
new file mode 100644
index 0000000..19eb75e
--- /dev/null
+++ b/type.h
@@ -0,0 +1,22 @@
+#ifndef TYPE_H
+#define TYPE_H
+
+#include "Python.h"
+
+extern PyObject *_go_PyType_Type;
+extern PyObject *_go_PyLong_Type;
+extern PyObject *_go_PyBool_Type;
+extern PyObject *_go_PyFloat_Type;
+extern PyObject *_go_PyComplex_Type;
+
+extern PyObject *_go_PyBytes_Type;
+extern PyObject *_go_PyByteArray_Type;
+extern PyObject *_go_PyUnicode_Type;
+extern PyObject *_go_PyTuple_Type;
+extern PyObject *_go_PyList_Type;
+
+extern PyObject *_go_PyDict_Type;
+
+extern PyObject *_go_PyModule_Type;
+
+#endif
diff --git a/unicode.go b/unicode.go
new file mode 100644
index 0000000..951b45a
--- /dev/null
+++ b/unicode.go
@@ -0,0 +1,85 @@
+package python3
+
+/*
+#include "Python.h"
+#include "macro.h"
+#include "type.h"
+*/
+import "C"
+import (
+	"unsafe"
+)
+
+//Unicode : https://docs.python.org/3/c-api/unicode.html#c.PyUnicode_Type
+var Unicode = togo(C._go_PyUnicode_Type)
+
+//PyUnicode_Check : https://docs.python.org/3/c-api/unicode.html#c.PyUnicode_Check
+func PyUnicode_Check(o *PyObject) bool {
+	return C._go_PyUnicode_Check(toc(o)) != 0
+}
+
+//PyUnicode_CheckExact : https://docs.python.org/3/c-api/unicode.html#c.PyUnicode_CheckExact
+func PyUnicode_CheckExact(o *PyObject) bool {
+	return C._go_PyUnicode_CheckExact(toc(o)) != 0
+}
+
+//PyUnicode_New : https://docs.python.org/3/c-api/unicode.html#c.PyUnicode_New
+func PyUnicode_New(size, maxchar rune) *PyObject {
+	return togo(C.PyUnicode_New(C.Py_ssize_t(size), C.Py_UCS4(maxchar)))
+}
+
+//PyUnicode_FromString : https://docs.python.org/3/c-api/unicode.html#c.PyUnicode_FromString
+func PyUnicode_FromString(u string) *PyObject {
+	cu := C.CString(u)
+	defer C.free(unsafe.Pointer(cu))
+
+	return togo(C.PyUnicode_FromString(cu))
+}
+
+//PyUnicode_FromEncodedObject : https://docs.python.org/3/c-api/unicode.html#c.PyUnicode_FromEncodedObject
+func PyUnicode_FromEncodedObject(obj *PyObject, encoding, errors string) *PyObject {
+	cencoding := C.CString(encoding)
+	defer C.free(unsafe.Pointer(cencoding))
+
+	cerrors := C.CString(errors)
+	defer C.free(unsafe.Pointer(cerrors))
+
+	return togo(C.PyUnicode_FromEncodedObject(toc(obj), cencoding, cerrors))
+}
+
+//PyUnicode_GetLength : https://docs.python.org/3/c-api/unicode.html#c.PyUnicode_GetLength
+func PyUnicode_GetLength(unicode *PyObject) int {
+	return int(C.PyUnicode_GetLength(toc(unicode)))
+}
+
+//PyUnicode_CopyCharacters : https://docs.python.org/3/c-api/unicode.html#c.PyUnicode_CopyCharacters
+func PyUnicode_CopyCharacters(to, from *PyObject, to_start, from_start, how_many int) int {
+	return int(C.PyUnicode_CopyCharacters(toc(to), C.Py_ssize_t(to_start), toc(from), C.Py_ssize_t(from_start), C.Py_ssize_t(how_many)))
+
+}
+
+//PyUnicode_Fill : https://docs.python.org/3/c-api/unicode.html#c.PyUnicode_Fill
+func PyUnicode_Fill(unicode *PyObject, start, length int, fill_char rune) int {
+	return int(C.PyUnicode_Fill(toc(unicode), C.Py_ssize_t(start), C.Py_ssize_t(length), C.Py_UCS4(fill_char)))
+}
+
+//PyUnicode_WriteChar : https://docs.python.org/3/c-api/unicode.html#c.PyUnicode_WriteChar
+func PyUnicode_WriteChar(unicode *PyObject, index int, character rune) {
+	C.PyUnicode_WriteChar(toc(unicode), C.Py_ssize_t(index), C.Py_UCS4(character))
+}
+
+//PyUnicode_ReadChar : https://docs.python.org/3/c-api/unicode.html#c.PyUnicode_ReadChar
+func PyUnicode_ReadChar(unicode *PyObject, index int) rune {
+	return rune(C.PyUnicode_ReadChar(toc(unicode), C.Py_ssize_t(index)))
+}
+
+//PyUnicode_Substring : https://docs.python.org/3/c-api/unicode.html#c.PyUnicode_Substring
+func PyUnicode_Substring(unicode *PyObject, start, end int) *PyObject {
+	return togo(C.PyUnicode_Substring(toc(unicode), C.Py_ssize_t(start), C.Py_ssize_t(end)))
+}
+
+//PyUnicode_AsUTF8 : https://docs.python.org/3/c-api/unicode.html#c.PyUnicode_AsUTF8
+func PyUnicode_AsUTF8(unicode *PyObject) string {
+	cutf8 := C.PyUnicode_AsUTF8(toc(unicode))
+	return C.GoString(cutf8)
+}
diff --git a/variadic.c b/variadic.c
new file mode 100644
index 0000000..0cfab2f
--- /dev/null
+++ b/variadic.c
@@ -0,0 +1,100 @@
+#include "Python.h"
+
+PyObject* _go_PyObject_CallFunctionObjArgs(PyObject *callable, int argc, PyObject **argv) {
+
+    PyObject *result = NULL;
+    switch (argc) {
+        case 0:
+            return PyObject_CallFunctionObjArgs(callable, NULL);
+        case 1:
+            return PyObject_CallFunctionObjArgs(callable, argv[0], NULL);
+        case 2:
+            return PyObject_CallFunctionObjArgs(callable, argv[0], argv[1], NULL);
+        case 3:
+            return PyObject_CallFunctionObjArgs(callable, argv[0], argv[1], argv[2], NULL);
+        case 4:
+            return PyObject_CallFunctionObjArgs(callable, argv[0], argv[1], argv[2], argv[3], NULL);
+        case 5:
+            return PyObject_CallFunctionObjArgs(callable, argv[0], argv[1], argv[2], argv[3], argv[4], NULL);
+        case 6:
+            return PyObject_CallFunctionObjArgs(callable, argv[0], argv[1], argv[2], argv[3], argv[4], argv[5], NULL);
+        case 7:
+            return PyObject_CallFunctionObjArgs(callable, argv[0], argv[1], argv[2], argv[3], argv[4], argv[5], argv[6], NULL);
+        case 8:
+            return PyObject_CallFunctionObjArgs(callable, argv[0], argv[1], argv[2], argv[3], argv[4], argv[5], argv[6], argv[7], NULL);
+        case 9:
+            return PyObject_CallFunctionObjArgs(callable, argv[0], argv[1], argv[2], argv[3], argv[4], argv[5], argv[6], argv[7], argv[8], NULL);
+        case 10:
+            return PyObject_CallFunctionObjArgs(callable, argv[0], argv[1], argv[2], argv[3], argv[4], argv[5], argv[6], argv[7], argv[8], argv[9], NULL);
+        case 11:
+            return PyObject_CallFunctionObjArgs(callable, argv[0], argv[1], argv[2], argv[3], argv[4], argv[5], argv[6], argv[7], argv[8], argv[9], argv[10], NULL);
+        case 12:
+            return PyObject_CallFunctionObjArgs(callable, argv[0], argv[1], argv[2], argv[3], argv[4], argv[5], argv[6], argv[7], argv[8], argv[9], argv[10], argv[11], NULL);
+        case 13:
+            return PyObject_CallFunctionObjArgs(callable, argv[0], argv[1], argv[2], argv[3], argv[4], argv[5], argv[6], argv[7], argv[8], argv[9], argv[10], argv[11], argv[12], NULL);
+        case 14:
+            return PyObject_CallFunctionObjArgs(callable, argv[0], argv[1], argv[2], argv[3], argv[4], argv[5], argv[6], argv[7], argv[8], argv[9], argv[10], argv[11], argv[12], argv[13], NULL);
+        case 15:
+            return PyObject_CallFunctionObjArgs(callable, argv[0], argv[1], argv[2], argv[3], argv[4], argv[5], argv[6], argv[7], argv[8], argv[9], argv[10], argv[11], argv[12], argv[13], argv[14], NULL);
+        case 16:
+            return PyObject_CallFunctionObjArgs(callable, argv[0], argv[1], argv[2], argv[3], argv[4], argv[5], argv[6], argv[7], argv[8], argv[9], argv[10], argv[11], argv[12], argv[13], argv[14], argv[15], NULL);
+        case 17:
+            return PyObject_CallFunctionObjArgs(callable, argv[0], argv[1], argv[2], argv[3], argv[4], argv[5], argv[6], argv[7], argv[8], argv[9], argv[10], argv[11], argv[12], argv[13], argv[14], argv[15], argv[16], NULL);
+        case 18:
+            return PyObject_CallFunctionObjArgs(callable, argv[0], argv[1], argv[2], argv[3], argv[4], argv[5], argv[6], argv[7], argv[8], argv[9], argv[10], argv[11], argv[12], argv[13], argv[14], argv[15], argv[16], argv[17], NULL);
+        case 19:
+            return PyObject_CallFunctionObjArgs(callable, argv[0], argv[1], argv[2], argv[3], argv[4], argv[5], argv[6], argv[7], argv[8], argv[9], argv[10], argv[11], argv[12], argv[13], argv[14], argv[15], argv[16], argv[17], argv[18], NULL);
+        case 20:
+            return PyObject_CallFunctionObjArgs(callable, argv[0], argv[1], argv[2], argv[3], argv[4], argv[5], argv[6], argv[7], argv[8], argv[9], argv[10], argv[11], argv[12], argv[13], argv[14], argv[15], argv[16], argv[17], argv[18], argv[19], NULL);
+    }
+    return result;
+}
+PyObject* _go_PyObject_CallMethodObjArgs(PyObject *obj, PyObject *name, int argc, PyObject **argv) {
+
+    PyObject *result = NULL;
+    switch (argc) {
+        case 0:
+            return PyObject_CallMethodObjArgs(obj, name, NULL);
+        case 1:
+            return PyObject_CallMethodObjArgs(obj, name, argv[0], NULL);
+        case 2:
+            return PyObject_CallMethodObjArgs(obj, name, argv[0], argv[1], NULL);
+        case 3:
+            return PyObject_CallMethodObjArgs(obj, name, argv[0], argv[1], argv[2], NULL);
+        case 4:
+            return PyObject_CallMethodObjArgs(obj, name, argv[0], argv[1], argv[2], argv[3], NULL);
+        case 5:
+            return PyObject_CallMethodObjArgs(obj, name, argv[0], argv[1], argv[2], argv[3], argv[4], NULL);
+        case 6:
+            return PyObject_CallMethodObjArgs(obj, name, argv[0], argv[1], argv[2], argv[3], argv[4], argv[5], NULL);
+        case 7:
+            return PyObject_CallMethodObjArgs(obj, name, argv[0], argv[1], argv[2], argv[3], argv[4], argv[5], argv[6], NULL);
+        case 8:
+            return PyObject_CallMethodObjArgs(obj, name, argv[0], argv[1], argv[2], argv[3], argv[4], argv[5], argv[6], argv[7], NULL);
+        case 9:
+            return PyObject_CallMethodObjArgs(obj, name, argv[0], argv[1], argv[2], argv[3], argv[4], argv[5], argv[6], argv[7], argv[8], NULL);
+        case 10:
+            return PyObject_CallMethodObjArgs(obj, name, argv[0], argv[1], argv[2], argv[3], argv[4], argv[5], argv[6], argv[7], argv[8], argv[9], NULL);
+        case 11:
+            return PyObject_CallMethodObjArgs(obj, name, argv[0], argv[1], argv[2], argv[3], argv[4], argv[5], argv[6], argv[7], argv[8], argv[9], argv[10], NULL);
+        case 12:
+            return PyObject_CallMethodObjArgs(obj, name, argv[0], argv[1], argv[2], argv[3], argv[4], argv[5], argv[6], argv[7], argv[8], argv[9], argv[10], argv[11], NULL);
+        case 13:
+            return PyObject_CallMethodObjArgs(obj, name, argv[0], argv[1], argv[2], argv[3], argv[4], argv[5], argv[6], argv[7], argv[8], argv[9], argv[10], argv[11], argv[12], NULL);
+        case 14:
+            return PyObject_CallMethodObjArgs(obj, name, argv[0], argv[1], argv[2], argv[3], argv[4], argv[5], argv[6], argv[7], argv[8], argv[9], argv[10], argv[11], argv[12], argv[13], NULL);
+        case 15:
+            return PyObject_CallMethodObjArgs(obj, name, argv[0], argv[1], argv[2], argv[3], argv[4], argv[5], argv[6], argv[7], argv[8], argv[9], argv[10], argv[11], argv[12], argv[13], argv[14], NULL);
+        case 16:
+            return PyObject_CallMethodObjArgs(obj, name, argv[0], argv[1], argv[2], argv[3], argv[4], argv[5], argv[6], argv[7], argv[8], argv[9], argv[10], argv[11], argv[12], argv[13], argv[14], argv[15], NULL);
+        case 17:
+            return PyObject_CallMethodObjArgs(obj, name, argv[0], argv[1], argv[2], argv[3], argv[4], argv[5], argv[6], argv[7], argv[8], argv[9], argv[10], argv[11], argv[12], argv[13], argv[14], argv[15], argv[16], NULL);
+        case 18:
+            return PyObject_CallMethodObjArgs(obj, name, argv[0], argv[1], argv[2], argv[3], argv[4], argv[5], argv[6], argv[7], argv[8], argv[9], argv[10], argv[11], argv[12], argv[13], argv[14], argv[15], argv[16], argv[17], NULL);
+        case 19:
+            return PyObject_CallMethodObjArgs(obj, name, argv[0], argv[1], argv[2], argv[3], argv[4], argv[5], argv[6], argv[7], argv[8], argv[9], argv[10], argv[11], argv[12], argv[13], argv[14], argv[15], argv[16], argv[17], argv[18], NULL);
+        case 20:
+            return PyObject_CallMethodObjArgs(obj, name, argv[0], argv[1], argv[2], argv[3], argv[4], argv[5], argv[6], argv[7], argv[8], argv[9], argv[10], argv[11], argv[12], argv[13], argv[14], argv[15], argv[16], argv[17], argv[18], argv[19], NULL);
+    }
+    return result;
+}
diff --git a/variadic.h b/variadic.h
new file mode 100644
index 0000000..8834e67
--- /dev/null
+++ b/variadic.h
@@ -0,0 +1,9 @@
+#ifndef VARIADIC_H
+#define VARIADIC_H
+
+#include "Python.h"
+
+PyObject* _go_PyObject_CallFunctionObjArgs(PyObject *callable, int argc, PyObject **args);
+PyObject* _go_PyObject_CallMethodObjArgs(PyObject *obj, PyObject *name, int argc, PyObject **args);
+
+#endif
\ No newline at end of file