无法为python3正确安装pip3

我在为python3正确安装pip3时遇到问题。看来我已经成功安装了pip和pip3

whereis pip
pip: /usr/local/bin/pip /usr/local/bin/pip3.7

whereis pip3
pip3: /usr/bin/pip3 /usr/local/bin/pip3 /usr/local/bin/pip3.7 /usr/share/man/man1/pip3.1.gz

让我好奇的是当我打字时：

pip --version
pip 19.0.3 from /home/fmd/.local/lib/python3.6/site-packages/pip (python 3.6)

这会给出正确的结果，但当我对pip3进行相同操作时，我会：

pip3 --version
Traceback (most recent call last):
  File "/usr/bin/pip3", line 9, in <module>
    from pip import main
ImportError: cannot import name 'main'

---

我的坏消息似乎是我安装了pip3.7二进制文件

pip3.7 --version
pip 19.0.3 from /home/fmd/.local/lib/python3.6/site-packages/pip (python 3.6)

我将使用pip3.7而不是pip3安装Python 3依赖项

例如

pip3.7安装numpy

等等

pip3.7 --version
pip 19.0.3 from /home/fmd/.local/lib/python3.6/site-packages/pip (python 3.6)