Python | Generator
Functions that return an iterable set of items are called generators. It is a normal function except that it yields expression in the function. It does not implements __itr__ and next() method and reduces other overheads as well.
If a function contains at least a yield statement, it becomes a generator. The yield keyword pauses the current execution by
saving its states and then resume from the same when required.
def my_fun(x):
for i in range(x):
yield i*i
for sqr in my_fun(5):
print(sqr)
Output:
0 1 4 9 16
