如何从这个程序返回多个值到 API 主机服务器

Posted 2023-02-23

【中文标题】如何从这个程序返回多个值到 API 主机服务器

【英文标题】：How to return multiple values from this program to API host server

【发布时间】：2021-11-29 12:05:32

【问题描述】：

这是一个从实习站点抓取数据然后将其转换为将数据以 JSON 格式发布到本地服务器的 rest API 的程序

注意：- 这是整个程序的一部分，它可以独立运行。

import scrapped_intershala
from flask import Flask,  jsonify 


import json
import requests
import webbrowser
from bs4 import BeautifulSoup
start_link='https://internshala.com'

html_text = requests.get('https://internshala.com/internships/game%20development-internship').text                  #for game development
soup= BeautifulSoup (html_text,'lxml')

app = Flask(__name__)
@app.route('/')
def run():
    company_name= soup.find_all('div', class_="heading_4_5 profile")
    stipend = soup.find_all(('span'), class_="stipend")
    location = soup.find_all(('a'), class_="location_link")
    start_date = soup.find_all(('div'), class_="item_body", id="start-date-first")
    link_to = soup.find_all(('div'),class_="heading_4_5 profile")


    for name, sal, loc, Sdate, LK in zip(company_name, stipend, location, start_date, link_to):                            #zip takes iterable or containers and returns a single iterator object, having mapped values from all the containers. 

        #name below are only here as these need formatting
        nm = name.text.replace('\n','')                                         #name of company
        dt = Sdate.text.replace('\n','').replace('Immediately','').strip()      #date of joining as intern
        #name above are only here as these need formatting

        answer=
            'Company name' : nm,
            'Stipend' :  sal.text,
            'Location': loc.text,
            'Date of joining as intern' : dt,
            'For more information link for internship': start_link+LK.a['href']
            

        queries_json = json.dumps(answer)
        return queries_json

    

        #print(f'''Company name: nm\n\nStipend: sal.text\n\nLocation: loc.text\n\nDate of joining as intern: dt\n\nFor more information link for internship: start_link+LK.a['href']\n\n\n\n\n\n''')








if __name__ == '__main__':
    app.run(debug=False, host='0.0.0.0', port=7000)              #this command may chance for every machine /  / here host 0.0.0.0 is used as this machine uses a private  IP 

本程序只向本地服务器返回一个值，而不是向服务器返回所有值

【参考方案1】：

python 中的return 语句会中断执行，因此如果在 for 循环中使用它会中断循环。

你应该做的是使用 foror 循环创建一个列表对象，然后将其返回：

all_answers = []
for item in ...:
    answer = ...
    all_answers.append(answer)
return json.dumps(all_answers)