Fibonacci¶

# set first value
a0 = 1
print(a0)

# set second value
a1 = 1
print(a1)

# calculate third value
a2 = a1+a0
print(a2)

while a2 <= 100:
    a0 = a1 # set a0 to the previous value of a1
    a1 = a2 # set a1 to the previous value of a2
    a2 = a1+a0 # re-calculate a2
    print(a2)

The loop is executed for the last time when a2==89, so the last value given to the print function is a2=55+89
to correct this try the moving the print to before the iteration:

a0 = 1
print(a0)

a1 = 1
print(a1)

a2 = a1+a0
#print(a2)

while a2 <= 100:
    print(a2)
    a0 = a1 # set a0 to the previous value of a1
    a1 = a2 # set a1 to the previous value of a2
    a2 = a1+a0 # re-calculate a2
    # the value that's over 100 never gets printed here (even though it is calculated)