了解了相關資料

不折騰的方法有(以往文章有)：

pypy，numba，numpy

但都不是 純正的 C

折騰的：

cffi，Cython，Boost.Python，Cpython 自帶模塊，SWIG 等

挺折騰的You can write an extension yourself in C or C++ with the Python C-API.

In a word: don't do that except for learning how to do it. It's very difficult to do it correctly. You will have to increment and decrement references by hand and write a lot of code just to expose one function, with very few benefits.

于是想到了 dll，編譯生成 dll，再去調用。

比較常用的輕量編譯器是 tcc，可以搜到 python-bindSasView/tinycc?github.com

下面是方法：

test.c

int add(int a, int b)

{

return a + b;

}

main.py

from tinycc import compile

from ctypes import cdll

dll_path = compile("test.c") # dll_path 是生成的 dll 的路徑

my = cdll.LoadLibrary(r"your path to test.dll")

print(my.add(1, 2))

運行 main.py 就完成了編譯 dll + 調用

test.c

#include

int add(int a, int b)

{

return a + b;

}

int sub(int a, int b)

{

return a - b;

}

int len(const char *c)

{

return strlen(c);

}

main.py

from tinycc import compile

from ctypes import cdll

dll_path = compile("test.c")

my = cdll.LoadLibrary(r"path to test.dll")

print(my.add(2 ** 31 + 3, 2), my.sub(3, 6), my.len(b"tssss"))

-2147483643 -3 5

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