Python check passwd

代码：

passwdList=['initial']
valid = False
count = 3
while count > 0: #3 times input
    input = raw_input("input passwd: ")
    #check passwd
    for eachpasswd in passwdList:
        if input == eachpasswd:
            valid = True
            count = 0
            print 'passwd OK!'
            break
        if not valid:
            print "invalid input"
            count -= 1
            continue
        else:
            break

运行结果：

>>> ================================ RESTART ================================
>>>
q
input passwd:
invalid input
input passwd: qq
invalid input
input passwd: qq
invalid input
>>> ================================ RESTART ================================
>>>
input passwd: aa
invalid input
input passwd: aa
invalid input
input passwd: initial
passwd OK!
>>>