pip升级不可以使用总是报错cannot import name 'FormatControl'，解决办法

(emotion) G:\shiyan\sencond_Dimensional\Facial-emotion-Recognition-master>pip3 list
Traceback (most recent call last):
  File "F:\anaconda\envs\emotion\Scripts\pip3-script.py", line 11, in 
    load_entry_point('pip==20.0.2', 'console_scripts', 'pip3')()
  File "F:\anaconda\envs\emotion\lib\site-packages\pkg_resources\__init__.py", line 484, in load_entry_point
    return get_distribution(dist).load_entry_point(group, name)
  File "F:\anaconda\envs\emotion\lib\site-packages\pkg_resources\__init__.py", line 2707, in load_entry_point
    return ep.load()
  File "F:\anaconda\envs\emotion\lib\site-packages\pkg_resources\__init__.py", line 2325, in load
    return self.resolve()
  File "F:\anaconda\envs\emotion\lib\site-packages\pkg_resources\__init__.py", line 2331, in resolve
    module = __import__(self.module_name, fromlist=['__name__'], level=0)
  File "F:\anaconda\envs\emotion\lib\site-packages\pip\_internal\__init__.py", line 42, in 
    from pip._internal import cmdoptions
  File "F:\anaconda\envs\emotion\lib\site-packages\pip\_internal\cmdoptions.py", line 16, in 
    from pip._internal.index import (
ImportError: cannot import name 'FormatControl'

折磨了很久，我以为出现什么问题了，最终降低了pip版本，最终可以使用。
在此网站上https://pypi.org/project/pip/19.1.1/#files
点击下载

解压安装

python setup.py install


测试可以使用


在运行代码时出现问题

ValueError: numpy.ufunc size changed, may indicate binary incompatibility. Expected 216 from C header, got 192 from PyObject


更新numpy包

 pip install --upgrade numpy

警戒

conda 与pip能不混合用尽量不要要混合使用

pip不要随便更新升级本