download NASA's Astronomy Picture of the Day

apod-download.py

#!/usr/bin/env python3

from os import environ, rename
from os.path import expanduser
from urllib.request import urlretrieve

from bowshock.apod import apod

# you might want to change these values
DEST_FILE = expanduser("~/.cache/kscreenlocker_greet/plasma_engine_potd/apod")
NASA_API_KEY = "DEMO_KEY"

print("Moving old image...")
rename(DEST_FILE, DEST_FILE + ".bak")
environ["NASA_API_KEY"] = NASA_API_KEY
metadata = apod().json()
print("Downloading image...")
urlretrieve(metadata["url"], filename=DEST_FILE)