Someone please explain this problem

Question

def count_to_5():
for i in range(1,6):
yield(i)
c = count_to_5()
n = 0
for i in c:
n += 1
for i in c:
n -= 1
print(n)

#Output: 5

#Why and how output is 5?

Answer 1

A generator will no longer yield once it had completed generating. So your second attempt to read from it (where you decremented <n> by 1) is of no effect, and <n> will still have 5 as its value.

To verify this, add print( n ) underneath the line decrementing <n> in the second for...in loop.