Question

我正在尝试使用Flask编写Web抓取API，这是代码：

app = Flask(__name__)


@app.before_request
def login():
    session = requests.Session()

    url = "someurl"

    params = {'uid': 'username',
          'pwd': 'password'}

    session.post(url, data=params)

    return session

@app.route('/scrape')
def lezione(session):

    req = session.get("urlscraped")

    soup = BeautifulSoup(req.content, "lxml")
    table = soup.find_all(
        'table', attrs={'class': 'griglia_tab', 'id': 'data_table'})[2]
    if not table:
        print("List is empty")
    print(re.sub(r'\n\s*\n', '\n', table.text.strip()))


if __name__ == "__main__":
    app.run(debug=True, host='localhost', port=5000)

本质上，此代码登录到站点并擦除一些数据。我想要做的是在抓取任何内容之前运行login()函数，但是当我运行代码时，我得到错误：TypeError: 'Session' object is not callable 代码中有什么问题？

Answer 1

我建议将login()转换为常规功能，然后从lezione()调用它：

def login():
    session = requests.Session()

    url = "someurl"

    params = {'uid': 'username',
          'pwd': 'password'}

    session.post(url, data=params)

    return session

@app.route('/scrape')
def lezione():

    req = login().get("urlscraped")

    soup = BeautifulSoup(req.content, "lxml")
    table = soup.find_all(
        'table', attrs={'class': 'griglia_tab', 'id': 'data_table'})[2]
    if not table:
        print("List is empty")
    print(re.sub(r'\n\s*\n', '\n', table.text.strip()))

＆＃39;会话＆＃39;对象不可调用Flask

1 个答案: