这是我卸载所有python包的最简单的方法。

from pip import get_installed_distributions
from os import system
for i in get_installed_distributions():
    system("pip3 uninstall {} -y -q".format(i.key))

仅使用pip的跨平台支持:

#!/usr/bin/env python

from sys import stderr
from pip.commands.uninstall import UninstallCommand
from pip import get_installed_distributions

pip_uninstall = UninstallCommand()
options, args = pip_uninstall.parse_args([
    package.project_name
    for package in
    get_installed_distributions()
    if not package.location.endswith('dist-packages')
])

options.yes = True  # Don't confirm before uninstall
# set `options.require_venv` to True for virtualenv restriction

try:
    print pip_uninstall.run(options, args)
except OSError as e:
    if e.errno != 13:
        raise e
    print >> stderr, "You lack permissions to uninstall this package.
                      Perhaps run with sudo? Exiting."
    exit(13)
# Plenty of other exceptions can be thrown, e.g.: `InstallationError`
# handle them if you want to.

我找到了这个片段作为替代解决方案。这是一个比重做virtualenv更优雅的删除库:

pip freeze | xargs pip uninstall -y

如果你有通过VCS安装的包，你需要排除这些行并手动删除包(从下面的注释中提升):

pip freeze | grep -v "^-e" | xargs pip uninstall -y

如果你有直接从github/gitlab安装的包，这些包将有@。 如:

django @ git+https://github.com/django.git@<sha>

您可以添加cut -d "@" -f1来获得卸载所需的包名。

pip freeze | cut -d "@" -f1 | xargs pip uninstall -y

如果你正在使用pew，你可以使用wipeenv命令:

皮尤wipeenv[环境]

方法一(冷冻)

pip freeze | xargs pip uninstall -y

方法二(附pip表)

pip list | awk '{print $1}' | xargs pip uninstall -y

方法三(使用virtualenv)

virtualenv --clear MYENV

首先，将所有包添加到requirements.txt中

pip freeze > requirements.txt

然后移除所有

pip uninstall -y -r requirements.txt