如何判斷字符串的內(nèi)容是否為雙字節(jié)字符？

s1 = '白日依山盡，黃河入海流，欲窮千里目，更上一層樓。'
s2 = 'If we don't have the guts to try anything, what's the meaning of life?'
s3 = '危樓高百丈，伸手欲摘星，不敢高聲語，恐驚天上人。'

判斷字符串的內(nèi)容是否為中文？

import re

p = re.compile('[\u4e00-\u9fa5]')
s1 = '白日依山盡，黃河入海流，欲窮千里目，更上一層樓。'
s2 = "If we don't have the guts to try anything, what's the meaning of life?"
s3 = '危樓高百丈，伸手欲摘星，不敢高聲語，恐驚天上人。'

import re

p = re.compile('[^\x00-\xff]')
print(''.join(i.group() for i in p.finditer(s1)) == s1)
print(''.join(i.group() for i in p.finditer(s2)) == s2)
print(''.join(i.group() for i in p.finditer(s3)) == s3)

各位大俠，是否有 更好的方法 來判斷字符串內(nèi)容是否為雙字節(jié)字符？