Pip install selenium 报错

问题遇到的现象和发生背景

在Anaconda环境中安装selenium, 总是有报错，显示： “”ERROR: Could not find a version that satisfies the requirement selenium (from versions: none)
ERROR: No matching distribution found for selenium“”
根据网上的解答尝试了很多方法都失败了，请问这种情况该怎么解决？

问题相关代码，请勿粘贴截图

WARNING: Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ReadTimeoutError("HTTPSConnectionPool(host='pypi.org', port=443): Read timed out. (read timeout=15)")': /simple/selenium/
WARNING: Retrying (Retry(total=3, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ReadTimeoutError("HTTPSConnectionPool(host='pypi.org', port=443): Read timed out. (read timeout=15)")': /simple/selenium/
WARNING: Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ReadTimeoutError("HTTPSConnectionPool(host='pypi.org', port=443): Read timed out. (read timeout=15)")': /simple/selenium/
WARNING: Retrying (Retry(total=1, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ReadTimeoutError("HTTPSConnectionPool(host='pypi.org', port=443): Read timed out. (read timeout=15)")': /simple/selenium/
WARNING: Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ReadTimeoutError("HTTPSConnectionPool(host='pypi.org', port=443): Read timed out. (read timeout=15)")': /simple/selenium/
ERROR: Could not find a version that satisfies the requirement selenium (from versions: none)
ERROR: No matching distribution found for selenium

这篇文章：（一）使用pip安装selenium 也许能够解决你的问题，你可以看下

使用其他源，如豆瓣
pip install selenium -i http://pypi.douban.com/simple/ --trusted-host pypi.douban.com

方法1：增大超时时间
pip --default-timeout=100 install selenium

方法2：修改安装源为清华安装源
pip install --index https://mirrors.ustc.edu.cn/pypi/web/simple/ selenium

pip install --index https://mirrors.ustc.edu.cn/pypi/web/simple/  selenium

有时候可能是网络问题，重新 pip install selenium 即可