https://cuiqingcai.com/6080.html
https://www.cnblogs.com/yyds/p/6901864.html
logging console output duplicates
Repeat printing problems [python] multiple log file sharing system - Marina sub language - blog Park
Python logging module repeat print? - SegmentFault Si No
Reproduced in: https: //www.jianshu.com/p/549349e8f2a4