Python While loops

Question

When I try to write this code in Jupyter it does not print anything, does anyone know why?

x = 0
while x<= 20 :
print(x)
x += 2

Answer 1

you need to make sure that your indentation is correct, it's very critical in python.

x = 0
while x <= 20:
print(x)
x += 2

by the way it would be easier to just use a for-loop for this task:
for x in range(0, 21, 2):
print(x)

Answer 2

Thank you very much!