output.debug.string.py

#! /usr/bin/python
# logging to DbgView with OutputDebugString
# from https://gist.github.com/ngbrown/d38064a844426a00fdaa and https://gist.github.com/wh13371/92df4715fc17eb74299d

import logging
import ctypes

# output "logging" messages to DbgView via OutputDebugString (Windows only!)
OutputDebugStringW = ctypes.windll.kernel32.OutputDebugStringW
OutputDebugStringW.argtypes = [ctypes.c_wchar_p]

class DbgViewHandler(logging.Handler):
 def emit(self, record):
  OutputDebugStringW(self.format(record))

def config_logging():
 
 # format
 fmt = logging.Formatter(fmt='%(levelname)-8s %(name)s:%(lineno)d %(funcName)s() - %(message)s', datefmt='%Y:%m:%d %H:%M:%S')
 
 rootLogger = logging.getLogger('')
 rootLogger.setLevel(logging.NOTSET)

 # "OutputDebugString\DebugView"
 ods = DbgViewHandler()
 ods.setLevel(logging.NOTSET)
 ods.setFormatter(fmt)
 rootLogger.addHandler(ods)
  
 # "Console"
 con = logging.StreamHandler()
 con.setLevel(logging.DEBUG)
 con.setFormatter(fmt)
 rootLogger.addHandler(con)


# in each file you want to use, do this:

import logging
log = logging.getLogger(__name__)
#log.addHandler(logging.NullHandler()) # include if you don't want a "No handlers could be found" message when config_logging() isn't called

def main():

 log.debug("debug message")
 log.info("info message")
 log.warn("warn message")
 log.error("error message")
 log.critical("critical message")

if __name__ == '__main__':
  
  config_logging()
  
  main()