[雪峰磁针石博客]flask构建自动化测试平台5-提高用户体验

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[雪峰磁针石博客]flask构建自动化测试平台5-提高用户体验

python人工智能命理 2018-08-22 17:31:25 浏览1039
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5-提高用户体验

本章将介绍以下主题:

  • cookies
  • CSS

本文最新版本

代码: headlines.py

import feedparser
from flask import Flask
from flask import render_template
from flask import request
from flask import make_response

import datetime
import json
import urllib

app = Flask(__name__)

RSS_FEEDS = {'bbc': 'http://feeds.bbci.co.uk/news/rss.xml',
             'cnn': 'http://rss.cnn.com/rss/edition.rss',
             'fox': 'http://feeds.foxnews.com/foxnews/latest',
             'iol': 'http://www.iol.co.za/cmlink/1.640'}

WEATHER_URL = "http://api.openweathermap.org/data/2.5/weather?q={}&units=metric&APPID=cb932829eacb6a0e9ee4f38bfbf112ed"
CURRENCY_URL = "https://openexchangerates.org//api/latest.json?app_id=b23c94daab584f4580e4e2bf75cbcf7e"

DEFAULTS = {'publication': 'bbc',
            'city': 'London,UK',
            'currency_from': 'GBP',
            'currency_to': 'USD'
            }


def get_value_with_fallback(key):
    if request.args.get(key):
        return request.args.get(key)
    if request.cookies.get(key):
        return request.cookies.get(key)
    return DEFAULTS[key]


@app.route("/")
def home():
    # get customised headlines, based on user input or default
    publication = get_value_with_fallback("publication")
    articles = get_news(publication)

    # get customised weather based on user input or default
    city = get_value_with_fallback("city")
    weather = get_weather(city)

    # get customised currency based on user input or default
    currency_from = get_value_with_fallback("currency_from")
    currency_to = get_value_with_fallback("currency_to")
    rate, currencies = get_rate(currency_from, currency_to)

    # save cookies and return template
    response = make_response(render_template("home.html", articles=articles,
                                             weather=weather, currency_from=currency_from,
                                             currency_to=currency_to, rate=rate, currencies=sorted(currencies)))
    expires = datetime.datetime.now() + datetime.timedelta(days=365)
    response.set_cookie("publication", publication, expires=expires)
    response.set_cookie("city", city, expires=expires)
    response.set_cookie("currency_from", currency_from, expires=expires)
    response.set_cookie("currency_to", currency_to, expires=expires)
    return response


def get_rate(frm, to):
    all_currency = urllib.request.urlopen(CURRENCY_URL).read().decode('utf-8')
    parsed = json.loads(all_currency).get('rates')
    frm_rate = parsed.get(frm.upper())
    to_rate = parsed.get(to.upper())
    return (to_rate / frm_rate, parsed.keys())


def get_news(publication):
    feed = feedparser.parse(RSS_FEEDS[publication.lower()])
    return feed['entries']


def get_weather(query):
    query = urllib.parse.quote(query)
    url = WEATHER_URL.format(query)
    data = urllib.request.urlopen(url).read().decode('utf-8')
    parsed = json.loads(data)
    weather = None
    if parsed.get('weather'):
        weather = {'description': parsed['weather'][0]['description'],
                   'temperature': parsed['main']['temp'],
                   'city': parsed['name'],
                   'country': parsed['sys']['country']
                   }
    return weather

if __name__ == "__main__":
    app.run(host='0.0.0.0',port=8000, debug=True)

home.html



<html>
  <head>
    <title>Headlines</title>
    <style>
      html {
        font-family: "Helvetica";
        background: white;
      }

      body {
        background: lightgrey;
        max-width: 900px;
        margin: 0 auto;
      }

      #header {
        padding-top: 5;
        background: lightsteelblue;
      }

      #inner-header {
        padding-left: 10;
      }

      #main{
        padding-left: 10
      }

      input[type="text"], select {
        color: grey;
        border: 1px solid lightsteelblue;
        height: 30px;
        line-height:15px;
        margin: 2px 6px 16px 0px;
      }

      input[type="submit"] {
        padding: 5px 10px 5px 10px;
        color: black;
        background: lightsteelblue;
        border: none;
        box-shadow: 1px 1px 1px #4C6E91;
      }

      input[type="submit"]:hover{
        background: steelblue;
      }

      </style>   
    </head>
    <body>
      <div id="header">
        <div id="inner-header">
          <h1>Headlines</h1>
          <p>Headlines. Currency. Weather.</p>
        </div>
        <hr />
      </div>
      <div id="main">
        <h2>Current weather</h2>
        
        <form>
          <input type="text" name="city" placeholder="weather search">
          <input type="submit" value="Submit">
        </form>
        <p>City: <b>{{weather.city}}, {{weather.country}}</b></p>
        <p>{{weather.description}} |{{weather.temperature}}&#8451</p>

        <h2>Currency</h2>
        <form>
          from: 
          <select name="currency_from">
            {% for currency in currencies %}
              <option value="{{currency}}" {{'selected="selected"' if currency_from==currency}}>{{currency}}</option>
            {% endfor %}
          </select>
          to: 
          <select name="currency_to">
            {% for currency in currencies %}
              <option value="{{currency}}" {{'selected="selected"' if currency_to==currency}}>{{currency}}</option>
            {% endfor %}
          </select>
          <input type="submit" value="Submit">
        </form>

        1 {{currency_from}} = {{currency_to}} {{rate}}
        
        <h2>Headlines</h2>
        <form>
          <input type="text" name="publication" placeholder="search" />
          <input type="submit" value="Submit" />
        </form>

        {% for article in articles %}
          <b><a href="{{article.link}}">{{article.title}}</a></b><br />
          <i>{{article.published}}</i><br />
          <p>{{article.summary}}</p> 
          <hr />
        {% endfor %}

    </div>
  </body>
</html>

python_flask_autotest5.PNG

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