Question

Possible Duplicate:
Python – Determine the type of an object?

I want ‘complex’ to be printed, but nothing happend, why? How to do this right?

>>> c = (5+3j)
>>> type(c)
<type 'complex'>
>>> if type(c) == 'complex': print 'complex'
... 
>>> 

Answer 1

You can use isinstance:

if isinstance(c, complex):

From the documentation:

Return true if the object argument is an instance of the classinfo argument, or of a (direct, indirect or virtual) subclass thereof. Also return true if classinfo is a type object (new-style class) and object is an object of that type or of a (direct, indirect or virtual) subclass thereof.