TypeError: can't pickle _thread.RLock objects

[NejcKozjekKnaufInsulation]

Your module works perfectly fine on macos, but I can't get it to work on Windows. The source is identical.

I am on python 3.6.8 and concurrent-log-handler 0.9.16

In essence, what I'm doing is I am defining a logger on top level and use it in a class method executed with concurrent_futures.ProcessPoolExecutor:

class Foo():
   ...
   def func(self):
       logger.info("logthis")

def get_logger(loggerFilename)
        logger = logging.getLogger()
        rotateHandler = ConcurrentRotatingFileHandler(loggerFilename, "a", 512*1024, 100)
	# format of the log
	formatter = logging.Formatter("%(asctime)s %(process)d %(funcName)16s %(levelname)8s %(message)s")
	rotateHandler.setFormatter(formatter)
	logger.addHandler(rotateHandler)
	# mode of the log
       logger.setLevel(logging.INFO)
       return logger

if __name__ == "__main__":
        loggerFilename = "/path/to/log"
        logger = get_logger(loggerFilename)
        c1 = Foo()
        c2 = Foo()

         with ProcessPoolExecutor(max_workers=6) as executor:
		executor.submit(c1.func)
		executor.submit(c2.func)

Return with error pickling error: TypeError: can't pickle _thread.RLock objects.

Any help would be appreciated.

[Preston Landers]

Can you submit a complete sample program that demonstrates this? Also include the full traceback you're getting.

I took a slightly modified version of your code and was able to run it successfully on Windows Python 3.7.3:

https://gist.github.com/Preston-Landers/4a7868e465499f7fc99186ab10ad803c

The only significant change was the call to get_logger is NOT inside the "if name == main" section.

[NejcKozjekKnaufInsulation]

Initialising logger outside of main solved my issue. Appreciate the help and all your wonderful work on this package. Thank you!

[Preston Landers]

Glad to hear it. Thanks!