Here...why we cant get the countdown when we just do print (countdown ())

Question

And why converting it into the type of lists...gets the output.
Does a generator alwys needs to be iterated or can we print it just lyk how we print a function.?
https://code.sololearn.com/cYYgb84iRLTU/?ref=app

Answer 1

you are right: a generator object needs to be iterated. see possibilities to output:

def countdown():
i=5
while i > 0:
yield i
i -= 1
print()
print(list(countdown()))
print(*countdown())
for item in countdown():
print(item, end=' ')