ModuleNotFoundError：尝试为 Django 安装 Python 包时没有名为“pip.download”的模块

Question

尝试使用 pip 安装 Numpy 和其他软件包时。我收到一条消息说ModuleNotFoundError: No module named 'pip.download'。任何人都知道任何可能的解决方案？我目前在 Python3 上运行。我看过类似的问题，但似乎没有解决方案。例如"pip install unroll": "python setup.py egg_info" failed with error code 1

pip3 install 'django-numpy==1.0'
Collecting django-numpy==1.0
  Downloading https://files.pythonhosted.org/packages/a2/15/22ea119379010455ee91c3ee2f76da207fbd342f5277305da3ad660a0a13/django-numpy-1.0.0.tar.gz
    Complete output from command python setup.py egg_info:
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "/private/var/folders/pz/d28llk412ss8ptwv5znkhv1m0000gn/T/pip-install-kwd6b6us/django-numpy/setup.py", line 6, in <module>
        from pip.download import PipSession
    ModuleNotFoundError: No module named 'pip.download'

    ----------------------------------------
Command "python setup.py egg_info" failed with error code 1 in /private/var/folders/pz/d28llk412ss8ptwv5znkhv1m0000gn/T/pip-install-kwd6b6us/django-numpy/