Python调用Golang，字符串处理

main.go

package main

import (
	"C"
	"bytes"
	"fmt"
	"io/ioutil"

	"golang.org/x/text/encoding/simplifiedchinese"
	"golang.org/x/text/transform"
)

//export cstr
func cstr(s *C.char) *C.char {
	gostr := C.GoString(s)
	fmt.Println("go:" + gostr)
	return C.CString(gostr)
}

//export gbk
func gbk(s *C.char) *C.char {
	gostr := C.GoString(s)
	fmt.Println("go:" + gostr)
	b, _ := ioutil.ReadAll(transform.NewReader(bytes.NewReader([]byte(gostr)), simplifiedchinese.GBK.NewEncoder()))
	return C.CString(string(b))
}

func main() {

}

 编译：go build -buildmode=c-shared -o str.so main.go

python代码：

from ctypes import cdll, c_char_p

lib = cdll.LoadLibrary('./str.so')
cstr = lib.cstr
cstr.argtype = c_char_p
cstr.restype = c_char_p

result = cstr("字符串".encode("utf-8"))
print(result)
print(result.decode('utf-8','ignore'))

gbk = lib.gbk
gbk.argtype = c_char_p
gbk.restype = c_char_p

result = gbk("字符串".encode("utf-8"))
print(result)
print(result.decode('gbk','ignore'))

运行结果：

go:字符串
go:字符串
b'\xe5\xad\x97\xe7\xac\xa6\xe4\xb8\xb2'
字符串
b'\xd7\xd6\xb7\xfb\xb4\xae'
字符串