python ---升级所有安装过的package

# -*- coding:utf8 -*-
import pip
from subprocess import call
from pip._internal.utils.misc import get_installed_distributions


if __name__ == '__main__':
    for dist in get_installed_distributions(): 
        call("pip install --upgrade " + dist.project_name, shell=True)

命令行运行

标签：__,dist,package,python,升级,call,pip,import,distributions
来源： https://www.cnblogs.com/saryli/p/11387062.html