安装卸载selenium

 1 C:\Users\xiongjiawei>pip install selenium==2.48.0
 2 Collecting selenium==2.48.0
 3   Retrying (Retry(total=4, connect=None, read=None, redirect=None)) after connection broken by ‘ReadTimeoutError("HTTPSConnectionPool(host=‘pypi.python.org‘, port=443): Read timed out. (read timeout=15)",)‘: /simple/selenium/
 4   Retrying (Retry(total=3, connect=None, read=None, redirect=None)) after connection broken by ‘ReadTimeoutError("HTTPSConnectionPool(host=‘pypi.python.org‘, port=443): Read timed out. (read timeout=15)",)‘: /simple/selenium/
 5   Downloading selenium-2.48.0.tar.gz (805kB)
 6     100% |████████████████████████████████| 806kB 37kB/s
 7 Installing collected packages: selenium
 8   Running setup.py install for selenium
 9 Successfully installed selenium-2.48.0
10 
11 C:\Users\xiongjiawei>