I would value an advice on the while loop. When i am in the loop i=i+1 i=1 while i<=0 i can't make up why 1 appears on screen?

Question

while loop

Answer 1

i dont under stand whatyou want
you should write the code like this

i = -1
while i <= 1:
print i
i += 1

output will be below
-1
0

Answer 2

to output 1
change your code in while i<=0 to i>=0.