bug

This program should work correctly

def checkio(pas):
mas = []
upper = 0
lower = 0
digit = 0
if len(pas)< 10:
    print ("иди нахуй")
else:
    for i in pas:
        mas.append("".join(i))
    for i in mas:
        if i.isupper():
            upper = upper + 1
        else:
            pass
        if i.islower():
            lower = lower + 1
        else:
            pass
        if i.isdigit():
            digit = digit + 1
        else:
            pass
    if upper >= 1 and lower >= 1 and digit >= 1:
        print (bool(1))
    else: