解決xpath中文亂碼

利用xpath建標籤樹之後，雖然提升了元素匹配效率，可是etree會把中文轉爲ASCII碼，因此簡單地tostring之後會有亂碼。

解決方法：

import requests
from requests.exceptions import RequestException
from lxml import etree

headers = {
    'User-Agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_2) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/12.0.2 Safari/605.1.15',
}


def get_one_page(url, headers):
    try:
        response = requests.get(url, headers=headers)
        if response.status_code == 200:
            response.encoding = response.apparent_encoding
            return response.text
        return None
    except RequestException:
        return None


tree = etree.HTML(html)
aim = tree.xpath(exp)
for i in aim:
    content = etree.tostring(i, encoding='utf-8', pretty_print=True, method="html").decode('utf-8')