“Return” in Function only Returning one Value

Question

Let\'s say I write a for loop that will output all the numbers 1 to x:

x=4
for number in xrange(1,x+1):
    print number,
#Output:
1
2
3
4

Answer 1

return does exactly like the keyword's name implies. When you hit that statement, it returns and the rest of the function is not executed.

What you might want instead is the yield keyword. This will create a generator function (a function that returns a generator). Generators are iterable. They "yield" one element each time the yield expression is executed.

def func():
    for x in range(10):
        yield x

generator = func()
for item in generator:
    print item