Answer 1

here is an example of a string generator:

def words(string):
    for i in range(5):
        yield string + str(i)

it takes the string as parameter and then generates 5 versions of that string with numbers at the end.
so, running the following code:

for word in words("onion"):
    print(word)

would produce:
onion0 
onion1 
onion2 
onion3 
onion4