Question

I'm trying to make a password checker in python. Is there a way of preventing a user from entering 2 consecutive lower case characters without using regex? Thanks

Answer 1

def detectConsecutiveLowerCase(s):

        if not s or s == '':
                return False

        # this keeps the status of last character
        prevLower = s[0].islower()

        for i in range(1, len(s)):
                # if current as well as previous character was
                # lowercase
                if s[i].islower() and prevLower:
                        return True
                
                # update the status to current character's
                prevLower = s[i].islower()

        # if we reached here, then no consecutive lowercase 
        # existed
        return False

print(detectConsecutiveLowerCase('ThiWiLlBeCaUgHt'))

print(detectConsecutiveLowerCase('tHiSWiLlNOTBeCaUgHt'))

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