zipcode = 02132
print zipcode
result = 1114
leading zero means octal as other have said. one way to keep your zero is to strip the leading zeros and just use a zero padded string when you display it,
>>> myInt = 2132
>>> print myInt
2132
>>> myString = "%05d" % myInt
>>> print myString
02132
>>> print int(myString)
2132
you probably get the idea.