怎样在Shell中运行Python的多行代码
http://www.crazyant.net/2875.html
How to execute multiline python code from a bash script?
https://stackoverflow.com/questions/40143190/how-to-execute-multiline-python-code-from-a-bash-script
Multi-line string with extra space (preserved indentation)
https://stackoverflow.com/questions/23929235/multi-line-string-with-extra-space-preserved-indentation/37222377#37222377
