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Ok, I’m looking to create a quick debug function that prints
out the current function that is running (to help in debugging what functions
are being run). I know that I can use a debugger to get a stack trace (and
I do), but I’m still curious about this problem. Here’s what
I’ve got so far: def Foo(): PrintCurFunc() class cBase: def
Run(self): PrintCurFunc(self) class cChild(cBase): pass import traceback def PrintCurFunc(obj = None): stack
= traceback.extract_stack() scriptName,
lineNum, funcName, lineOfCode = stack[-2] if
obj: print
'%s.%s()' % (obj.__class__.__name__, funcName) else: print
'%s()' % funcName def main(): Foo() b
= cBase() c
= cChild() b.Run() c.Run() x
= cTwo() x.Run() if __name__ == '__main__': main() The output I get is: Foo() cBase.Run() cChild.Run() cTwo.Run() cTwo.Run() Now, PrintCurFunc() above gets me the output I want in the
fist two cases (Foo() and cBase.Run()). But, in the case of c.Run(), I
would still like to see it output cBase.Run(), since that is the method that is
being run. Yes, cChild being derived from cBase does have an inherited
Run method, but I would like my output to display “where the code physically
lives” so that for debugging I can basically get a stack trace to see
what is executed when. It might be more clear in this example: class cOne: def
Run(self): PrintCurFunc(self) class cTwo(cOne): def
Run(self): PrintCurFunc(self) cOne.Run(self) x = cTwo() x.Run() gets me the output of: cTwo.Run() cTwo.Run() when I would prefer it output: cTwo.Run() cOne.Run() …which reflects the call stack more clearly.
Now, I’ve looked into the traceback module but was only able to find the
name of the function. Passing self into PrintCurFunc was my attempt at
getting at the class name. But, as you see, it obviously returns the
object’s class name and not the class name the function was defined on.
I also looked at this recipe http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/66062
but it only gives me a function name and not the class name as well. Any thoughts? I’m a bit new to Python’s
reflection features… Thanks tons! -Scott |
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