【Python】字符串与unicode字符之间的转换

def unicode_to_str(unicode_str):
    return unicode_str.encode().decode('unicode_escape')


def str_to_unicode(string):
    new_str = ''
    for ch in string:
        if '\u4e00' <= ch <= '\u9fff':
            new_str += hex(ord(ch)).replace('0x', '\\u')
        else:
            new_str += ch
    return new_str


if __name__ == '__main__':
    unicode = str_to_unicode('你好')

    print(unicode) # \u4f60\u597d
    print(repr(unicode)) # '\\u4f60\\u597d'
    print(unicode_to_str('\\u4f60\\u597d')) # 你好