Python中 sys._MEIPASS 是什么

用 pyinstaller 打包生成的 exe 文件,在运行时动态生成依赖文件,sys._MEIPASS 就是这些依赖文件所在文件夹的路径

通常  C:\Windows\Temp\_MEIxxxx 或 C:\Users\用户名\AppData\Local\Temp\_MEIxxxx

 仅在 exe 运行时有效,IDE运行时报错:

AttributeError: module 'sys' has no attribute '_MEIPASS'

sys._MEIPASS 的值在 sys.path 中也可访问到

关于本处详细参考 https://pyinstaller.readthedocs.io/en/v3.3.1/operating-mode.html

_MEIxxxx 文件夹内容举例:

兼顾 exe 运行和 IDE 运行的代码示例:

# !/usr/bin/python3
# coding: utf-8
import os
import re
import sys
import traceback

this = os.path.abspath(os.path.dirname(__file__))
module = os.path.split(this)[0]
sys.path.append(module)


def match(path):
    basename = os.path.basename(path)
    return re.match("^_MEI\d+$", basename) and True or False


def get():
    try:
        return sys._MEIPASS
    except AttributeError:
        traceback.print_exc()

    for index, path in enumerate(sys.path):
        if match(path):
            return path
    return None


if __name__ == '__main__':
    try:
        path = get()
        print(path)

        if path is not None:
            os.remove(path)
    except PermissionError:
        traceback.print_exc()

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转载自blog.csdn.net/MAOZEXIJR/article/details/91971027
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