python 删除字符串中xe2x94u25cfU0001f511的unicode字符

# 使用unicode-escape编码集，将unicode内存编码值直接存储，并替换空白字符
    content = pre_text.text.encode('unicode_escape').decode('utf-8').replace(' ', '')
    print(pre_text.text.encode('utf-8'))
    # 利用正则匹配x开头的特殊字符
    result = re.findall(r'\x[a-f0-9]{2}', content)
    for x in result:
	    # 替换找的的特殊字符
        content = content.replace(x, '')
    #利用正则匹配u开头的特殊字符
    result = re.findall(r'\[u|U][a-f0-9]{4,8}', content)
    print(result)
    for x in result:
	    # 替换找的的特殊字符
        content = content.replace(x, ' ')
    # 最后再解码
    content = content.encode('utf-8').decode('unicode_escape')