In Python, StopIteration is an exception which occurred by built-in next() and __next__() method in iterator to signal that iteration is done for all items and no more to left to iterate.
Example of StopIteration
In this example string value “FacingIssuesOnIT” is Iterating to print character. In this case while loop will run indefinitely and call next() method on iterable value to print value.
iterable_value = 'FacingIssuesOnIT' iterable_obj = iter(iterable_value) while True: try: # Iterate by calling next item = next(iterable_obj) print(item) except StopIteration as err: print('Stop Iteration occured') break
F a c i n g I s s u e s O n I T Stop Iteration occurred
In this program after completing the iteration next() element print of iterable_value when it goes to next element print it will throw StopIteration exception because there is no more element in iterable_value.
Whenever you apply the next() method of iterable object always check the length of iterable object then run the loop to get element by next() method.