[2010-01] getting names of variable at run-time in python

variables.py

#!/usr/bin/env python
# encoding: utf-8
from __future__ import division, with_statement
import sys

# Demonstrating a crude method of determining a variable's names/labels.

def main():
	def getVariableNames(variable, globals, locals):
		variables = {}
		variables.update(globals)
		variables.update(locals)
		
		return [key for key, value in variables.items() if value is variable]
	
	foo = "Example"
	bar = foo
	baz = "Woo"
	
	print getVariableNames(bar, globals(), locals()) # prints ['bar', 'foo']
	print getVariableNames(baz, globals(), locals()) # prints ['baz']

if __name__ == "__main__": main()