#! python3
"""Download XKCD
Downloads every single XKCD comic.
"""
[docs]def main():
import requests, os, bs4
url = "http://xkcd.com" # starting url
os.makedirs("xkcd", exist_ok=True) # store comics in ./xkcd
while not url.endswith('#'):
# Download the page.
print("Downloading page %s..." % url)
res = requests.get(url)
res.raise_for_status()
soup = bs4.BeautifulSoup(res.text, "lxml")
# Find the URL of the comic image.
comicElem = soup.select("#comic img")
if not comicElem:
print("Could not find comic image.")
else:
comicUrl = "http:" + comicElem[0].get("src")
# Download the image.
print("Downloading image %s..." % comicUrl)
res = requests.get(comicUrl)
res.raise_for_status()
# Save the image to ./xkcd.
imageFile = open(os.path.join("xkcd", os.path.basename(comicUrl)), "wb")
for chunk in res.iter_content(100000):
imageFile.write(chunk)
imageFile.close()
# Get the Prev button's url.
prevLink = soup.select('a[rel="prev"]')[0]
url = "http://xkcd.com" + prevLink.get("href")
print("Done.")
if __name__ == '__main__':
main()