[Python-Dev] Help with changes in stack from 2.7 to 3.x

[Andrew Konstantaras]

I wrote the following code that works in Python 2.7 that takes the variables passed to the function into a dictionary.  The following call:

     strA = 'a'
     intA = 1
     dctA = makeDict(strA, intA)

produces the following dictionary:

      {'strA':'a', 'intA':1}

To access the names passed into the function, I had to find the information by parsing through the stack.  The code that used to work is:

from traceback import extract_stack

def makeDict(*args):
    strAllStack = str(extract_stack())
    intNumLevels = len(extract_stack())
    intLevel = 0
    blnFinished = False
    while not blnFinished:
        strStack = str(extract_stack()[intLevel])
        if strStack.find("makeDict(")>0:
            blnFinished = True
        intLevel += 1
        if intLevel >= intNumLevels:
            blnFinished = True
    strStartText = "= makeDict("
    intLen = len(strStartText)
    intOpenParenLoc = strStack.find(strStartText)
    intCloseParenLoc = strStack.find(")", intOpenParenLoc)
    strArgs = strStack[ intOpenParenLoc+intLen : intCloseParenLoc ].strip()
    lstVarNames = strArgs.split(",")
    lstVarNames = [ s.strip() for s in lstVarNames ]  
    if len(lstVarNames) == len(args):
        tplArgs = map(None, lstVarNames, args)
        newDict = dict(tplArgs)
        return newDict
    else:
        return "Error, argument name-value mismatch in function 'makeDict'. lstVarNames: " + str(lstVarNames) + "\n args: " + str(args), strAllStack

The same code does not work in Python 3.3.4.  I have tried parsing through the stack information and frames and I can't find any reference to the names of the arguments passed to the function.  I have tried inspecting the function and other functions in the standard modules, but I can't seem to find anything that will provide this information.

Can anyone point me in the direction to find this information?  Any help is appreciated.

---Andrew

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