Ajax数据爬取之微博m站(错误:TypeError: 'NoneType' object is not iterable)

import requests
from urllib.parse import urlencode
from pyquery import PyQuery as pq

base_url = 'https://m.weibo.cn/api/container/getIndex?'

headers = {
    'Referer': 'https://m.weibo.cn/u/2830678474',
    'User-Agent': 'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.100 Safari/537.36',
    'x-requested-with': 'XMLHttpRequest',
}

def get_page(page):
    params = {
        'type': 'uid',
        'value': '2830678474',
        'containerid': '1076032830678474',
        'page': page
    }
    url = base_url + urlencode(params)
    try:
        response = requests.get(url, headers=headers)
        if response.status_code == 200:
            return response.json()
    except requests.ConnectionError as e:
        print('Error', e.args)

def parse_page(json):
    if json:
        items = json.get('data').get('cards')
        for item in items:
           if item.get('mblog'):
               item = item.get('mblog')
               weibo = {}
               weibo['id'] = item.get('id')
               weibo['text'] = pq(item.get('text')).text()
               weibo['attitudes'] = item.get('attitudes_count')
               weibo['comments'] = item.get('comments_count')
               weibo['reposts'] = item.get('reposts_count')
               yield weibo

if __name__ == '__main__':
    for page in range(1, 11):
        json = get_page(page)
        results = parse_page(json)
        for result in results:
            print(result)

代码参照了崔庆才老师的,但是在运行的时候出现了错误:TypeError: 'NoneType' object is not iterable
找了好久,才发现部分数据里面没有mblog这个key,所以在使用item.get('mblog')时,返回的数据为None。然后主动判断下item.get('mblog')是否为空,就可以搞定了。

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