python判断是否汉字的5种方法实例

def is_chinese(char):
    if '\u4e00' <= char <= '\u9fff':
        return True
    else:
        return False

import unicodedata
def is_chinese(char):
    if 'CJK' in unicodedata.name(char):
        return True
    else:
        return False

import re

# 判断字符是否为汉字
def is_chinese(word):
    pattern = re.compile(r'[^\u4e00-\u9fa5]')
    if pattern.search(word):
        return False
    else:
        return True

# 判断字符是否为汉字
def is_chinese(word):
    if b'\xb0\xa1' <= word.encode('gb2312') <= b'\xd7\xf9':
        return True
    else:
        return False

from xpinyin import Pinyin

# 判断字符是否为汉字
def is_chinese(word):
    pinyin = Pinyin()
    if pinyin.get_pinyin(word, '').isalpha():
        return False
    else:
        return True

# 一行代码判断是否有汉字,ddd 代表要检测的字符串
f = lambda x='ddd':sum([1 if u'\u4e00' <= i <= u'\u9fff' else 0 for i in x])>0
 
f('444')
False
 
f('ddddd的')
True
 
# 直接上也行 x 代表字符串
sum([1 if u'\u4e00' <= i <= u'\u9fff' else 0 for i in x])>0
 
sum([1 if u'\u4e00' <= i <= u'\u9fff' else 0 for i in 'dd哈'])>0
True

def is_chinese(string):
    """
    检查整个字符串是否包含中文
    :param string: 需要检查的字符串
    :return: bool
    """
    for ch in string:
        if u'\u4e00' <= ch <= u'\u9fff':
            return True
 
    return False
 
ret1 = is_chinese("a哦哦哈aaa")
print(ret1)
 
ret2 = is_chinese("123")
print(ret2)