# # isalpha()判断是否是字母 isdigit()判断是否是数字
# s = 'abcd6'
# result = s.isalpha()
# print('result=', result)
#
# s = '6688'
# result = s.isdigit()
# print('result=', result)
#
# sum = 0
# for i in range(3):
# num = input('请输入数字:')
# if num.isdigit():
# num = int(num)
# sum += num
#
# print('sum', sum)
# sum = 0
# i = 1
# while i <= 3:
# num = input('请输入数字:')
# if num.isdigit():
# num = int(num)
# sum += num
# i += 1
# print('第{}个数字累加成功！'.format(i - 1))
# else:
# print('不是数字！')
# print('结果是{}'.format(sum))本文章为转载内容，我们尊重原作者对文章享有的著作权。如有内容错误或侵权问题，欢迎原作者联系我们进行内容更正或删除文章。
