Pycharm Douban source error report and source settings

1. The first step: right-click the upper left corner of the file, and find the setting

2. The second step: click as shown in the figure
3. The third step: modify some
options: add (must be added, this step is the key)

--trusted-host pypi.douban.com

The source address is: Douban source

 http://pypi.douban.com/simple/

4. Step 4: Click Install Package to do it