dangerous_days.py

import urllib
import urllib2
import json

API_ENDPOINT = 'http://api.openweathermap.org/data/2.5/forecast/daily'    
API_KEY = 'PUT API KEY HERE'
DAYS = 13
THRESHOLD = 70

def is_dangerous(province, date=0):
    if date >= 7:
        raise ValueError('The parameter [date] should less than 7')

    params = {
        'q': province,
        'mode': 'json',
        'cnt': DAYS,
        'units': 'metric',
        'APPID': API_KEY
    }

    url = API_ENDPOINT + '?' + urllib.urlencode(params)
    res_json = json.load(urllib2.urlopen(url))
    
    forecast = res_json['list'][date:date + 7]

    millimeter_sum = 0

    for day in forecast:
        millimeter_sum = millimeter_sum + float(day.get('rain', '0'))

    print millimeter_sum

    return millimeter_sum >= THRESHOLD