How can I access the current executing module or class name in Python?

How can I access the current executing module or class name in Python?

From the comment — not the question.

I am simply curious to see if what I am trying to do is possible.

The answer to is it possible is always yes. Always. Unless your question involves time travel, anti-gravity or perpetual motion.

Since the answer is always yes, your question is ill-formed. The real question is whats a good way to have my logging module know the name of the client? or something like that.

The answer is Accept it as a parameter. Dont mess around with inspecting or looking for mysterious globals or other tricks.

Just follow the design pattern of logging.getLogger() and use explicitly-named loggers. A common idiom is the following

logger= logging.getLogger( __name__ )

That handles almost all log naming perfectly.

This should work for referencing the current module:

import sys
sys.modules[__name__]

How can I access the current executing module or class name in Python?

The currently executing module clearly is foo, as thats what contains the function currently running – I think a better description as to what you want is the module of foos immediate caller (which may itself be foo if youre calling a f() from a function in foo called by a function in bar. How far you want to go up depends on what you want this for.

In any case, assuming you want the immediate caller, you can obtain this by walking up the call stack. This can be accomplished by calling sys._getframe, with the aprropriate number of levels to walk.

def f():
    caller = sys._getframe(1)  # Obtain calling frame
    print Called from module, caller.f_globals[__name__]

[Edit]: Actually, using the inspect module as suggested above is probably a cleaner way of obtaining the stack frame. The equivalent code is:

def f():
    caller = inspect.currentframe().f_back
    print Called from module, caller.f_globals[__name__]

(sys._getframe is documented as being for internal use – the inspect module is a more reliable API)