pip list --outdated --format=freeze | grep -v '^\-e' | cut -d = -f 1  | xargs -n1 pip install -U

通过拉取请求发送给pip人员；同时使用我写的这个pip库解决方案：

from pip import get_installed_distributions
from pip.commands import install

install_cmd = install.InstallCommand()

options, args = install_cmd.parse_args([package.project_name
                                        for package in
                                        get_installed_distributions()])

options.upgrade = True
install_cmd.run(options, args)  # Chuck this in a try/except and print as wanted

pip_upgrade_outdated（基于此旧脚本）完成此任务。根据其文件：

usage: pip_upgrade_outdated [-h] [-3 | -2 | --pip_cmd PIP_CMD]
                            [--serial | --parallel] [--dry_run] [--verbose]
                            [--version]

Upgrade outdated python packages with pip.

optional arguments:
  -h, --help         show this help message and exit
  -3                 use pip3
  -2                 use pip2
  --pip_cmd PIP_CMD  use PIP_CMD (default pip)
  --serial, -s       upgrade in serial (default)
  --parallel, -p     upgrade in parallel
  --dry_run, -n      get list, but don't upgrade
  --verbose, -v      may be specified multiple times
  --version          show program's version number and exit

步骤1：

pip install pip-upgrade-outdated

第2步：

pip_upgrade_outdated

在蝙蝠脚本中

call pip freeze > requirements.txt
call powershell "(Get-Content requirements.txt) | ForEach-Object { $_ -replace '==', '>=' } | Set-Content requirements.txt"
call pip install -r requirements.txt --upgrade

这应该更有效：

pip3 list -o | grep -v -i warning | cut -f1 -d' ' | tr " " "\n" | awk '{if(NR>=3)print}' | cut -d' ' -f1 | xargs -n1 pip3 install -U

pip-list-o列出过时的包；grep-v-i warning反向匹配警告以避免更新时出错cut-f1-d1''返回第一个单词-过时包的名称；tr“\n|\r”“”将剪切的多行结果转换为单行、空格分隔的列表；awk“｛if（NR>=3）print｝”跳过标题行cut-d“”-f1获取第一列xargs-n1 pip install-U从管道左侧获取1个参数，并将其传递给命令以升级包列表。

我在pip问题讨论中找到的最简单、最快的解决方案是：

pip install pipdate
pipdate

资料来源：https://github.com/pypa/pip/issues/3819