安装 pip 在 python 中不起作用 <3.6 [英] Installing pip is not working in python < 3.6

问题描述

我开始使用 bitbucket CI 制作应用程序，我正在使用以下步骤来部署应用程序，但安装 pip 的步骤失败了.

I am starting to make a app using bitbucket CI and i am using the following steps to deploy the application and the steps to install pip is failing.

 script:
    - apt-get update
    - apt-get install -y python-dev
    - curl -O https://bootstrap.pypa.io/get-pip.py
    - python get-pip.py
    ... and a few more steps

不知道为什么，但是 python get-pip.py 步骤失败并出现以下错误.

Dont know why but python get-pip.py step fails with the following error.

Traceback (most recent call last):
  File "get-pip.py", line 24226, in <module>
    main()
  File "get-pip.py", line 199, in main
    bootstrap(tmpdir=tmpdir)
  File "get-pip.py", line 82, in bootstrap
    from pip._internal.cli.main import main as pip_entry_point
  File "/tmp/tmpUgc5ng/pip.zip/pip/_internal/cli/main.py", line 60
    sys.stderr.write(f"ERROR: {exc}")
                                   ^

SyntaxError: invalid syntax

直到昨天为止，这一切正常.不知道为什么这现在不起作用.

This worked fine upto yesterday. Not sure why this is not working now.

我认为这可能是因为 Windows，但我检查了运行 linux 的本地机器，但这些步骤但它们工作正常.

I thought it may be because of windows but i checked in my local machine running linux but these steps but they worked fine.

推荐答案

pip 21.0 不再支持 Python 2 和 3.5.更高版本需要 Python 3.6+.Python 支持语法 f""3.6+.

pip 21.0 dropped support for Python 2 and 3.5. The later versions require Python 3.6+. The syntax f"" is supported by Python 3.6+.

要为 Python 2.7 安装 pip，请从 https://bootstrap 安装.pypa.io/pip/2.7/ :

To install pip for Python 2.7 install it from https://bootstrap.pypa.io/pip/2.7/ :

- curl -O https://bootstrap.pypa.io/pip/2.7/get-pip.py
- python get-pip.py
- python -m pip install --upgrade "pip < 21.0"

最后一个命令是升级到最新的支持版本.对于 Python 2.7，目前支持的最新版本是 pip 20.3.4.

The last command is to upgrade to the latest supported version. For Python 2.7 the latest supported is currently pip 20.3.4.

对于 Python 3.4 安装从 https://bootstrap.pypa.io/pip/3.4/.对于 Python 3.5 — https://bootstrap.pypa.io/pip/3.5/ .

For Python 3.4 install from https://bootstrap.pypa.io/pip/3.4/ . For Python 3.5 — https://bootstrap.pypa.io/pip/3.5/ .

对于 Python 3.4，升级命令是

For Python 3.4 the upgrade command is

- python -m pip install --upgrade "pip < 19.2"

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