On 30/11/2015 17:15, Ulli Horlacher wrote: > def main(): > a(1) > a(2) > a() > print(a.x) > if 'a.x' in globals(): print('global variable') > if 'a.x' in locals(): print('local variable') Try this: if 'x' in a.__dict__: print('attribute of a') -- Bartc