Leetcode_Python 520 检测大写字母

class Solution(object):
    def detectCapitalUse(self, word):
        """
        :type word: str
        :rtype: bool
        """
        num_A,num_a = 0,0
        for i in word:
            if 65 <= ord(i) <= 90:
                num_A += 1
            else:
                num_a += 1
        if num_A == 1 and 65 <= ord(word[0]) <= 90:
            return True
        if num_A == len(word) or num_a == len(word):
            return True
        else:
            return False