Python - 从 python33.dll 调用函数(访问冲突)

Question

我有这个代码:

import ctypes


lib = ctypes.WinDLL('python33.dll')
print(lib['PyRun_SimpleString'])

func = lib['PyRun_SimpleString']

func.argtypes = [ctypes.c_char_p]
func.restype = ctypes.c_int

arg = "print(':P')"
arg = arg.encode('utf-8')

func(arg)

结果:

OSError: exception: access violation reading 0x00000004

使用sublime text运行(python3.3嵌入)

Answer 1

使用PyDLL ，而不是 WinDLL。来自文档:

Instances of this class behave like CDLL instances, except that the Python GIL is not released during the function call, and after the function execution the Python error flag is checked. If the error flag is set, a Python exception is raised.

Thus, this is only useful to call Python C api functions directly.