如何解决在virtualenv中安装python包的错误？

Question

我正在使用pip在我的虚拟环境中安装一些包，但它显示了以下错误：

pip install Flask-Ask==0.9.8

输出为：

Collecting Flask-Ask==0.9.8 Using cached https://files.pythonhosted.org/packages/6a/f5/d4709ae94584a0b1541e9b52b2d25a8a1bdb6e2da9d6870f23fdd0523a30/Flask-Ask-0.9.8.tar.gz ERROR: Command errored out with exit status 1: command: /home/nisha/v2env/bin/python3.6 -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-wf2c65i_/Flask-Ask/setup.py'"'"'; __file__='"'"'/tmp/pip-install-wf2c65i_/Flask-Ask/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' egg_info --egg-base /tmp/pip-install-wf2c65i_/Flask-Ask/pip-egg-info cwd: /tmp/pip-install-wf2c65i_/Flask-Ask/ Complete output (5 lines): Traceback (most recent call last): File "<string>", line 1, in <module> File "/tmp/pip-install-wf2c65i_/Flask-Ask/setup.py", line 8, in <module> from pip.req import parse_requirements ModuleNotFoundError: No module named 'pip.req' ---------------------------------------- ERROR: Command errored out with exit status 1: python setup.py egg_info Check the logs for full command output.

Answer 1

我认为这是一个过时的模块。因此pip必须使用更早的版本。因此，据我所知，任何超过版本10的pip都无法找到flask- ask (我认为是req.txt文件)

尝试：

python -m pip install pip==9.0.1

注意:完成此模块后，您必须再次更新pip。

完成此模块后：

python -m pip install --upgrade pip