python爬取网页接口数据，以yearning为例

本文主要是介绍python爬取网页接口数据，以yearning为例，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

模拟登陆获取token，传token到对应的接口获取数据，下载到csv里面 

import getpass
import os
import requests
import time
import csv
from datetime import datetimeclass Yearning:def __init__(self):self.session = requests.Session()self.host = 'http://yearning.xxxx.com:8000'self.token_file = './token.txt'if not os.path.exists(self.token_file):open(self.token_file, 'w').close()file = open(self.token_file, 'r')token = file.read()file.close()self.authorization = ''if token:self.authorization = f'Bearer {token}'def query(self, database, source, sql, print_sql=False):if print_sql:print(sql)uri = f'{self.host}/api/v2/query/results'body = {'data_base': database,'source': source,'sql': sql}try:result_data = self.get_result_data(uri, body, False)if result_data and 'data' in result_data and result_data['data']:return result_data['data']return []except Exception as e:print(f'query exception! database={database}, source={source}, sql={sql}')print(e)return []def login(self, username, password):uri = f'{self.host}/ldap'headers = {'Content-Type': 'application/json; charset=UTF-8','cookie': '',}body = {'username': username,'password': password}try:result_data = self.get_result_data(uri, body, False)if result_data and 'token' in result_data:token = result_data['token']self.authorization = f'Bearer {token}'file = open(self.token_file, 'w')file.truncate()file.write(token)file.close()else:print(f'login fail!')except Exception as e:print(f'login error! e={e}')def get_result_data(self, uri, body, isGet):headers = {'Content-Type': 'application/json; charset=UTF-8','cookie': '','Authorization': self.authorization}if isGet:response = requests.get(uri, headers=headers)else:response = requests.post(uri, json=body, headers=headers)result_data = response.json()if result_data == 'missing or malformed jwt' or result_data == 'Token is expired' or result_data == '':print('登录授权已失效，请重新登录！')username = input('账号：')password = getpass.getpass('密码：')# 可以hardcode账号密码#username = ''#password = ''self.login(username, password)return self.get_result_data(uri, body, isGet)if 'code' in result_data and result_data['code'] == 1200 and 'payload' in result_data:return result_data['payload']else:print(f'其他异常，休眠1s！{result_data}')time.sleep(1)return Noneyearning = Yearning()def export():sql = "select   count(*), driver_id from   order_info group by driver_id"db = "order"source = "order_readonly"# 获取当前时间now = datetime.now()# 格式化时间为年月日时分秒字符串，例如："2023-04-01 14:30:45"datetime_str = now.strftime("%Y%m%d%H%M%S")#windows的换行符是\r\n 会导致有空行，需要将换行符修改为\n,lineterminator='\n'save_file = csv.writer(open(f'res/data-{datetime_str}.csv', 'w'),lineterminator='\n')data_list = yearning.query(db, source, sql, True)data = data_list[0]key_list = [key for key in data]save_file.writerow(key_list)print(key_list)for data in data_list:list = [data[key].strip() for key in key_list]print(list)save_file.writerow(list)if __name__ == '__main__':export()

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