# -*- coding:utf-8 -*-
import re

def check(str):
my_re = re.compile(r'[A-Za-z]', re.S)

res = re.findall(my_re, str)

if len(res):

print(u'含有英文字符')

else:

print(u'不含有英文字符')
if __name__ == '__main__':

测试 = '你好123H'

check(测试)

str1 = '你好123'

check(str1)