quickWeather.py

#! python3
# quickWeather.py - Prints the weather for a location from the command line.

import json
import requests
import sys

# Compute location from command line arguments.
if len(sys.argv) < 2:
    print('Usage: quickWeather.py <location>')
    sys.exit()

location = ' '.join(sys.argv[1:])

# Download the JSON data from OpenWeatherMap.org's API.
url = 'http://api.openweathermap.org/data/2.5/forecast/daily?q=%s&cnt=3' % (location)
response = requests.get(url)
response.raise_for_status()

# Load JSON data into a Python variable.
weatherData = json.loads(response.text)

# Print weather description.
w = weatherData['list']
print('Current weather in %s:' % (location))
print(w[0]['weather'][0]['main'], '-', w[0]['weather'][0]['description'])
print('\nTomorrow:')
print(w[1]['weather'][0]['main'], '-', w[1]['weather'][0]['description'])
print('\nDay after tomorrow:')
print(w[2]['weather'][0]['main'], '-', w[2]['weather'][0]['description'])