'''
DS2500
Spring 2025
Sample code from class - reading in JSON data from a file, and from an API
Goals for today:
- read in JSON files for APOD and weather on mars
- render the image, and print out the temps per Sol on Mars
- Do the same thing with real-time data via the API
'''
import json
import requests
from urllib.request import urlopen
from PIL import Image
import matplotlib.pyplot as plt
APOD_FILE = "data/apod.json"
WEATHER_FILE = "data/weather.json"
APOD_URL = "https://api.nasa.gov/planetary/apod"
API_KEY = "NTIKUHIONA8CJjtnHJfgMkHhy8wcLXfnIaDdN4oy"
def display_img(url, title = ""):
''' given an image URL, render it in matplotlib '''
image = Image.open(urlopen(url))
plt.imshow(image)
plt.axis("off")
plt.title(title)
plt.show()
def create_page(filename, img_url, title = ""):
''' given a filename and an image URL, create a web page
that displays it
'''
html_content = (f"Astronomy Pic
"
f"
{title}")
with open(filename, "w") as outfile:
outfile.write(html_content)
def read_json(filename):
''' given a filename, open and read and return as json '''
with open(filename, "r") as jfile:
data = json.load(jfile)
return data
def request_api(url, params):
''' given a base url and a param dictionary, call the API
function and return its json-formatted response
'''
response = requests.get(url, params = params)
return response.json()
def print_weather_sols(weather_data):
''' given a dictionary with temp data for Mars,
print out the av temp per sol
'''
for key, val in weather_data.items():
if key.isdigit():
temp = val["AT"]["av"]
print(f"Sol: {key}, temp: {temp}")
def main():
# gather data - read in JSON files for pic
apod_data = read_json(APOD_FILE)
print(apod_data["url"])
# gather data - read in JSON file for weather
# print out the av temp for each Sol
weather_data = read_json(WEATHER_FILE)
print_weather_sols(weather_data)
# gather data in real-time from the APOD API
params = {"api_key" : API_KEY, "date" : "2006-10-16"}
apod_data = request_api(APOD_URL, params)
# render the APOD image in a plot, and on a web page
title = f"Astronomy Pic of the Day: {apod_data['date']}"
display_img(apod_data["url"], title = title)
create_page("planet.html", apod_data["url"], title)
if __name__ == "__main__":
main()