pip install selenium 出现错误
Could not find a version that satisfies the requirement selenium (from versions: )
No matching distribution found for selenium
You are using pip version 9.0.3, however version 19.2.3 is available.
You should consider upgrading via the ‘python -m pip install --upgrade pip’ comm
and.出现该错误主要是没有指定selenium版本
修改：
pip 安装时加上模块版本即可：
pip install selenium==（指定任一版本）
例如：
pip install selenium==3.141.0