ubuntu linux pip安装报错 TypeError: expected string or bytes-like object

  File "/usr/share/python-wheels/packaging-17.1-py2.py3-none-any.whl/packaging/specifiers.py", line 703, in contains
    item = parse(item)
  File "/usr/share/python-wheels/packaging-17.1-py2.py3-none-any.whl/packaging/version.py", line 31, in parse
    return Version(version)
  File "/usr/share/python-wheels/packaging-17.1-py2.py3-none-any.whl/packaging/version.py", line 225, in __init__
    match = self._regex.search(version)
TypeError: expected string or bytes-like object


解决办法：

升级系统的wheel和pip

sudo apt install python3-pip

 

然后重新pip install xxx 就可以了