After Python exception, start debug debug

Here we need to modify Python's processing flow after the exception occurs Sys.excepthook is the exception handler for the Python system, overrides a custom processor, and starts the PDB after printing the exception information.

ImportSYSdefinfo (type, value, TB):#Exception Type    #Exception Value    #Call Stack    ifHasattr (SYS,'PS1')or  notSys.stderr.isatty ():#we're in interactive mode or we don't have a tty-like        #device, so we call the default hookSys.__excepthook__(type, value, TB)Else:        ImportTraceback, PDB#We is not in interactive mode, print the exception ...traceback.print_exception (type, value, TB)Print        #... then start the debugger in Post-mortem mode.Pdb.post_mortem (TB) Sys.excepthook= info

As long as in the code, start import this custom debug module, you can modify the system default exception handling process __excepthook__
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Python exception, start debug Debug