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Learning how to use feedparser... recent_entries() will print out info on all posts to the Pythonista forum in the past 24 hours. watch_feed() will print out info on the last post to the Pythonista forum. Sleeps for 15 minutes then check to see if there is a newer post. If so, prints out info on it and opens its URL in the webbrowser. Repeat.
#!/usr/bin/env python
'''
recent_entries() will print out info on all posts to the Pythonista forum in the past 24 hours.
watch_feed() will print out info on the last post to the Pythonista forum.
Sleeps for 15 minutes then check to see if there is a newer post.
If so, prints out info on it and opens its URL in the webbrowser. Repeat.
'''
import datetime, feedparser, sys, time, webbrowser
feed_url = 'http://omz-forums.appspot.com/pythonista/rss'
feed_fmt = '''{title} -- {published}
>>> {link}
>>> {summary}'''
def get_latest_entry(in_url = feed_url):
rss_entry = feedparser.parse(feed_url).entries
return rss_entry[0] if rss_entry else None
def watch_feed(in_url = feed_url, in_sleep_minutes = 15):
prev_post = get_latest_entry(in_url)
if prev_post:
# import pprint ; pprint.pprint(prev_post)
print(feed_fmt.format(**prev_post))
while prev_post:
curr_post = get_latest_entry(in_url)
if curr_post and curr_post != prev_post:
print(feed_fmt.format(**curr_post))
webbrowser.open(curr_post.link) # open new post in browser
prev_post = curr_post
print('{} --- sleeping... {}'.format(time.ctime(), '-' * 20))
for i in xrange(in_sleep_minutes * 6): # in Pythonista, allow the
time.sleep(10) # user to halt the script once every 10 seconds
# probably add nodoze.py here to wake up device if it goes to sleep
def hours_ago(in_hours_ago = 24):
delta_t = datetime.timedelta(hours=in_hours_ago)
return time.time() - delta_t.total_seconds()
def recent_entries(in_url = feed_url, in_hours_ago = 24):
cutoff_time = hours_ago(in_hours_ago)
print('=' * 40)
print('Cutoff time is: {}'.format(time.ctime(cutoff_time)))
cutoff_time = time.gmtime(cutoff_time) # struct_time
rss_entries = feedparser.parse(in_url).entries
# import pprint ; pprint.pprint(rss_entries[0])
for i, post in enumerate(rss_entries):
post_time = time.strptime(post['published'], '%a, %d %b %Y %H:%M:%S')
if post_time < cutoff_time: # this post is too old
return rss_entries[:i] # return entries before cutoff_time
return rss_entries # ALL entries are before cutoff_time
def main(argv):
rss_entries = recent_entries(feed_url, 24)
if not rss_entries:
print('No new entries in the past 24 hours!!')
for the_post in rss_entries:
print('-' * 20)
# import pprint ; pprint.pprint(the_post)
print(feed_fmt.format(**the_post))
for i in xrange(2):
print('=' * 40)
watch_feed(feed_url)
if __name__ == '__main__':
sys.exit(main(sys.argv))
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