How can you print a variable name in python? [duplicate]
If you insist, here is some horrible inspect-based solution.
import inspect, redef varname(p): for line in inspect.getframeinfo(inspect.currentframe().f_back)[3]: m = re.search(r'\bvarname\s*\(\s*([A-Za-z_][A-Za-z0-9_]*)\s*\)', line) if m: return m.group(1)if __name__ == '__main__': spam = 42 print varname(spam)I hope it will inspire you to reevaluate the problem you have and look for another approach.
To answer your original question:
def namestr(obj, namespace): return [name for name in namespace if namespace[name] is obj]Example:
>>> a = 'some var'>>> namestr(a, globals())['a']As @rbright already pointed out whatever you do there are probably better ways to do it.
If you are trying to do this, it means you are doing something wrong. Consider using a dict instead.
def show_val(vals, name): print "Name:", name, "val:", vals[name]vals = {'a': 1, 'b': 2}show_val(vals, 'b')Output:
Name: b val: 2