When installing a python module with pip or pychar, you sometimes encounter a readtimeout error. The reason for this problem is probably the network speed

my default source is Tsinghua, sometimes the link network is not good ( the day after the college entrance examination today, it is estimated that there are too many visitors, everyone wants to go to Tsinghua, ha ha ), so I change the source.

pip --default-timeout=100 install pyspark -i http://pypi.douban.com/simple/ --trusted-host pypi.douban.com

Perfect solution