一键升级所有pip过期库

import pip
from subprocess import call
from pip._internal.utils.misc import get_installed_distributions
for dist in get_installed_distributions():
call("pip install --upgrade " + dist.project_name, shell=True)
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作者：yuzhucu
来源：CSDN
原文：https://blog.csdn.net/yuzhucu/article/details/80287307
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