Fibonacci count to 200

Question

# What does this code do?

# Fibonacci code. huh?
#
print("Hello.")
a = 0
b = 1
while a <= 21:
b + a #internal expression before actual addition
c = b + a # UHH EXCUSE ME I INDENTED THIS BECAUSE VARIABLE c ISN'T STACKING SO MAYBE IT SHOULD BE OUTSIDE OF THE WHILE LOOP
print(c)
if b > 21:
b = b + a
elif b == -1:
-1 * 500 + 500
else:
if b >= 200:
"done"

Answer 1

Not my code, just copied from python.org
a, b = 0, 1
while a < 200:
print(a, end=',')
a, b = b, a+b