在我使用pycharm导包时，总是报pip版本的问题
后来我根据提示用命令：python -m -pip install --upgrade pip 升级pip
结果一直报下面错误：
Exception: Traceback (most recent call last): File "E:\pycharm file\venv\lib\site-packages\pip-9.0.1-py3.5.egg\pi p\basecommand.py", line 215, in main status = self.run(options, args) File "E:\pycharm file\venv\lib\site-packages\pip-9.0.1-py3.5.egg\pi p\commands\install.py", line 342, in run prefix=options.prefix_path, File "E:\pycharm file\venv\lib\site-packages\pip-9.0.1-py3.5.egg\pi p\req\req_set.py", line 784, in install **kwargs File "E:\pycharm file\venv\lib\site-packages\pip-9.0.1-py3.5.egg\pi p\req\req_install.py", line 851, in install self.move_wheel_files(self.source_dir, root=root, prefix=prefix) File "E:\pycharm file\venv\lib\site-packages\pip-9.0.1-py3.5.egg\pi p\req\req_install.py", line 1064, in move_wheel_files isolated=self.isolated, File "E:\pycharm file\venv\lib\site-packages\pip-9.0.1-py3.5.egg\pi p\wheel.py", line 462, in move_wheel_files generated.extend(maker.make(spec)) File "E:\pycharm file\venv\lib\site-packages\pip-9.0.1-py3.5.egg\pi p\_vendor\distlib\scripts.py", line 372, in make self._make_script(entry, filenames, options=options) File "E:\pycharm file\venv\lib\site-packages\pip-9.0.1-py3.5.egg\pi p\_vendor\distlib\scripts.py", line 276, in _make_script self._write_script(scriptnames, shebang, script, filenames, ext) File "E:\pycharm file\venv\lib\site-packages\pip-9.0.1-py3.5.egg\pi p\_vendor\distlib\scripts.py", line 212, in _write_script launcher = self._get_launcher('t') File "E:\pycharm file\venv\lib\site-packages\pip-9.0.1-py3.5.egg\pi p\_vendor\distlib\scripts.py", line 351, in _get_launcher result = finder(distlib_package).find(name).bytes AttributeError: 'NoneType' object has no attribute 'bytes'
后来我将升级命令改为：python -m pip install -U --force-reinstall pip 完成pip升级
注意：更新pip之后，Pycharm安装package出现如下报错：
在查找很多方法后都没有解决，所以更新时，要谨慎，最终，我选择降级pip版本为9.0.3
降级命令：
python -m pip install --upgrade pip==9.0.3
再次尝试安装包，没有出错
