How to catch StopIteration Exception in Python?

Rajendra Dharmkar

Answered on 6th Dec, 2017

When an iterator is done, it’s next method raises StopIteration. This exception is not considered an error.

We re-write the given code as follows to catch the exception and know its type.

import sys
try:
z = [5, 9, 7]
i = iter(z)
print i
print i.next()
print i.next()
print i.next()
print i.next()
except Exception as e:
print e
print sys.exc_type

OUTPUT

<listiterator object at 0x0000000002AF23C8>
5
9
7
<type 'exceptions.StopIteration'>