python - 使用flask、pythonanywhere显示字典中的数据

Question

我正在尝试使用 pythonanywhere Flask 应用程序显示一些简单的 3 天天气预报数据。这是到目前为止我的代码:

from flask import Flask, render_template
import requests
from collections import defaultdict


app = Flask(__name__)

r = requests.get("http://api.wunderground.com/api/mykey/forecast/q/SouthAFrica/Stellenbosch.json")
data = r.json()
weather_data = defaultdict(list)

counter = 0
for day in data['forecast']['simpleforecast']['forecastday']:
    date= day['date']['weekday'] + ":"
    cond=  "Conditions: ", day['conditions']
    temp= "High: ", day['high']['celsius'] + "C", "Low: ", day['low']['celsius'] + "C"


    counter = counter + 1

    weather_data[counter].append(date)
    weather_data[counter].append(cond)
    weather_data[counter].append(temp)

return weather_data

@app.route('/')
def home():
    return render_template('home.html', weather_data=weather_data)

if __name__ == '__main__':
    app.run(host="0.0.0.0", port=5000)

这是简单的“home.html”:

<table>
{% for key,value in weather_data.items() %}
    <tr>
        <td>{{value[1]}}</td>
        <td>{{value[2]}}</td>
        <td>{{value[3]}}</td>
        <td>{{value[4]}}</td>
    </tr>
{% endfor %}
</table>

我似乎无法让它发挥作用。我怀疑这与数据的格式有关？它应该是导入的单独文件吗？

Answer 1

将 python 逻辑放入 View 函数中，如下所示:

@app.route('/')
def home():
    r = requests.get("http://api.wunderground.com/api/key/forecast/q/SouthAfrica/Stellenbosch.json")
    data = r.json()
    weather_data = defaultdict(list)

    counter = 0
    for day in data['forecast']['simpleforecast']['forecastday']:
        date = day['date']['weekday'] + ":"
        cond = "Conditions: ", day['conditions']
        temp = "High: ", day['high']['celsius'] + "C", "Low: ", day['low']['celsius'] + "C"

        counter += 1

        weather_data[counter].append(date)
        weather_data[counter].append(cond)
        weather_data[counter].append(temp)

    return render_template('home.html', weather_data=weather_data)

通过查看 API 数据，我认为您的 {{ value[1] }} 仍然是一个元组，因此您可能需要类似 {{ value[1][0] } }, {{ value[1][1] }} 在模板中呈现此数据。

将打印语句添加到您的Python中以调试如何解析数据结构。