Python Logging (function name, file name, line number) using a single file

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I am trying to learn how an application works. And for this I am inserting debug commands as the first line of each function"s body with the goal of logging the function"s name as well as the line number (within the code) where I send a message to the log output. Finally, since this application comprises of many files, I want to create a single log file so that I can better understand the control flow of the application.

Here is what I know:

1. for getting function name, I can use function_name.__name__ but I don"t want to use the function_name (so that I could rapidly copy and paste a generic Log.info("Message") in the body of all functions). I know this could be done in C using __func__ macro but I am not sure about python.

2. for getting the filename and line number, I have seen that (and I believe that) my application is using Python locals() function but in a syntax that I am not completely aware of e.g.: options = "LOG.debug("%(flag)s : %(flag_get)s" % locals()) and I tried it using like LOG.info("My message %s" % locals()) which produces something like {"self": <__main__.Class_name object at 0x22f8cd0>}. Any input on this please?

3. I know how to use logging and add handler to it to log to a file but I am not sure if a single file can be used to record all log messages in correct order of function calls in the project.

I would greatly appreciate any help.

Thanks!

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