Error: SyntaxError: (unicode error) 'utf-8' codec can't decode byte 0xb4 in position 0:invalid start byte.
Possible reason: python file is not stored in utf-8 encoding.
Solution: convert the python file into utf-8 encoding.
Solution: in my.cnf, set "innodb_force_recovery" from 1 to 6. The higher number, the less function, but more likely to ignore some errors. High number may prevent data recovery!