ImportError：无法从“pip._internal.distributions.source”导入名称“SourceDistribution”

Posted 2023-02-19

【中文标题】ImportError：无法从“pip._internal.distributions.source”导入名称“SourceDistribution”

【英文标题】：ImportError: cannot import name 'SourceDistribution' from 'pip._internal.distributions.source'

【发布时间】：2020-05-07 14:27:48

【问题描述】：

pip3 install 不起作用，pip3 也无法从 pip20.0 降级到 pip19：

Rayaans-MacBook-Pro:~ rayaangrewal$ pip3 install 
    Traceback (most recent call last):
      File "/Library/Frameworks/Python.framework/Versions/3.7/bin/pip3", line 10, in <module>
        sys.exit(main())
      File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/pip/_internal/cli/main.py", line 73, in main
        command = create_command(cmd_name, isolated=("--isolated" in cmd_args))
      File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/pip/_internal/commands/__init__.py", line 96, in create_command
        module = importlib.import_module(module_path)
      File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/importlib/__init__.py", line 127, in import_module
        return _bootstrap._gcd_import(name[level:], package, level)
      File "<frozen importlib._bootstrap>", line 1006, in _gcd_import
      File "<frozen importlib._bootstrap>", line 983, in _find_and_load
      File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked
      File "<frozen importlib._bootstrap>", line 677, in _load_unlocked
      File "<frozen importlib._bootstrap_external>", line 728, in exec_module
      File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
      File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/pip/_internal/commands/install.py", line 24, in <module>
        from pip._internal.cli.req_command import RequirementCommand
      File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/pip/_internal/cli/req_command.py", line 20, in <module>
        from pip._internal.operations.prepare import RequirementPreparer
      File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/pip/_internal/operations/prepare.py", line 16, in <module>
        from pip._internal.distributions import (
      File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/pip/_internal/distributions/__init__.py", line 1, in <module>
        from pip._internal.distributions.source import SourceDistribution
    ImportError: cannot import name 'SourceDistribution' from 'pip._internal.distributions.source' (/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/pip/_internal/distributions/source/__init__.py)

【问题讨论】：

看来你并不孤单；可能是 pip 20 中的问题：***.com/q/59843026/7976758

【参考方案1】：

这是pip 20.0 中的一个错误；见https://github.com/pypa/pip/issues/7620

已在pip 20.0.1 中修复。升级到 20.0.1+ 或降级到 19.3.1。获取get-pip.py 并运行

python get-pip.py

或

python get-pip.py pip==19.3.1

【参考方案2】：

@pdh 的 github 问题链接中有很好的答案。

当在 Ubuntu/LXC 上的 Python 3.6+ 中使用 venv 并在执行期间使用自安装/自升级 pip 命令时，您可以改用 get-pip.py：

激活虚拟环境venv：source bin/activate

现在，代替自更新 pip 命令（在 pip 0.20.0 中不起作用）：bin/pip3 install --upgrade pip

您可以使用：

cd bin
# downloading get-pip.py each time; but you could also remove it from here
# and run this manually only once:
wget https://bootstrap.pypa.io/get-pip.py -O ./get-pip.py
# definitely keep this command:
python3 get-pip.py
cd ..

结果：

Collecting pip
...
Installing collected packages: pip
  Found existing installation: pip 20.0.0
    Uninstalling pip-20.0.0:
      Successfully uninstalled pip-20.0.0
Successfully installed pip-20.0.1

给get-pip.py的备注：

它将升级该 /bin 文件夹中的所有现有 pip 应用程序（例如 pip、pip3、pip3.6） 它将固有地使用参数install、--upgrade、--force-reinstall 它默认使用参数setuptools 和wheel，除非特别禁用--no-setuptools 或--no-wheel

GET-PIP.PY 警告

鉴于友好的错误消息WARNING: pip is being invoked by an old script wrapper. This will fail in a future version of pip. Please see https://github.com/pypa/pip/issues/5599 for advice on fixing the underlying issue. To avoid this problem you can invoke Python with '-m pip' instead of running pip directly.，可以将上面的第 3 点替换为：

bin/python3 -m pip install -U pip [setuptools] [wheel] [--no-cache-dir]

【参考方案3】：

安装新版本的 pip 修复它：

curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py
python get-pip.py

【参考方案4】：

在项目名称下转到虚拟环境中的以下文件。 venv\Lib\site-packages\pip_internal\distributions__init__.py 注释掉第一行。

从 pip._internal.distributions.source 导入 SourceDistribution

然后安装所需的 pip 版本。

【参考方案5】：

卷曲https://bootstrap.pypa.io/get-pip.py |须藤python3

以上修复为我解决了这个问题