News Feed Program. I need help fixing these errors listed below. My code is completed but I don't know how to approach these errors. If you'd like detailed description of the assignment: https://ocw.mit.edu/courses/electrical-e...11_ps5.pdf
Thank you for any suggestions or help.
Errors that I'm getting:
Thank you for any suggestions or help.
Errors that I'm getting:
Error:1) line 121, in __init__
WorldTrigger.__init__(self, word) #inherited with a new parameter
NameError: name 'WorldTrigger' is not defined
2) line 130, in __init__
WordTrigger.__init__(self.word)
AttributeError: 'PublishedTrigger' object has no attribute 'word'
3) line 142, in evaluate
return self.is_word_in(story.get_sumamry())
AttributeError: 'NewsStory' object has no attribute 'get_sumamry'
4) line 185, in evaluate
self.phrase in story.get_subject()
AttributeError: 'NewsStory' object has no attribute 'get_subject'
5) line 201, in filter_stories
if trigger.evaluate(story):
line 185, in evaluate
self.phrase in story.get_subject()
AttributeError: 'NewsStory' object has no attribute 'get_subject'#
#
#
#
import feedparser
import ssl
import string
import time
from project_util import translate_html
from news_gui import Popup
#-----------------------------------------------------------------------
#
# Problem Set 5
#======================
# Code for retrieving and parsing
# Google and Yahoo News feeds
# Do not change this code
#======================
def process(url):
"""
Fetches news items from the rss url and parses them.
Returns a list of NewsStory-s.
"""
if hasattr(ssl, '_create_unverified_context'):
ssl._create_default_https_context = ssl._create_unverified_context
feed = feedparser.parse(url)
entries = feed.entries
ret =
for entry in entries:
guid = entry.guid
title = translate_html(entry.title)
published = translate_html(entry.published)
link = entry.link
summary = translate_html(entry.summary)
newsStory = NewsStory(guid, title, published, summary, link)
ret.append(newsStory)
return ret
#======================
# Part 1
# Data structure design
#======================
# Problem 1
# TODO: NewsStory
class NewsStory():
def __init__(self, guid, title, published, summary, link) :
self.guid = guid
self.title = title
self.published = published
self.summary = summary
self.link = link
#methods
def get_guid(self):
return self.guid #gives parameter values
def get_title(self):
return self.title
def get_published(self):
return self.published
def get_summary(self):
return self.summary
def get_link(self):
return self.link
#======================
# Part 2
# Triggers
#======================
#Superclass
class Trigger(object):
def evaluate(self, story):
"""
Returns True if an alert should be generated
for the given news item, or False otherwise.
"""
raise NotImplementedError
# Whole Word Triggers
# Problems 2-5
# WordTrigger (sub of trigger)
class WordTrigger(Trigger):
def __init__(self,word): #override
self.word = word
def is_word_in(self,text):
word = self.word.lower()
text = text.lower()
for punct in string.punctuation:
text = text.replace(punct, " ") #replaces all the punctuation with space
split_text = text.split(" ") #splits the text based on spaces
if word in split_text:
return true
else:
return false
#return word in split_text
# TitleTrigger (sub of word trigger)
class TitleTrigger(WordTrigger):
def __init__(self, word):
WorldTrigger.__init__(self, word) #inherited with a new parameter
#self.word = word #override. same as above
def evaluate(self, story):
#inherited methods
return self.is_word_in(story.get_title())
# TODO: PublishedTrigger (sub of word trigger)
class PublishedTrigger(WordTrigger):
def __init__(self,word):
WordTrigger.__init__(self.word)
def evaluate(self, story):
return self.is_word_in(story.get.published())
# TODO: SummaryTrigger (sub of word trigger)
class SummaryTrigger(WordTrigger):
def __init__(self, word):
WordTrigger.__init__(self, word)
def evaluate(self, story):
return self.is_word_in(story.get_sumamry())
# Composite Triggers
# Problems 6-8
# TODO: NotTrigger (sub of trigger)
class NotTrigger(Trigger):
def __init__(self, trigger):
self.t = trigger
def evaluate(self, story):
return not self.t.evaluate(story)
# TODO: AndTrigger (sub of trigger)
class AndTrigger(Trigger):
def __init__(self, trigger1, trigger2):
self.t1 = trigger1
self.t2 = trigger2
def evaluate(self, story):
return self.t1.evaluate(story) and self.t2.evaluate(story)
# TODO: OrTrigger (sub of trigger)
class OrTrigger(Trigger):
def __init__(self, trigger1, trigger2):
self.t1 = trigger1
self.t2 = trigger2
def evaluate(self, story):
return self.t1.evaluate(story) or self.t2.evaluate(story)
# Phrase Trigger
# Question 9
# TODO: PhraseTrigger
class PhraseTrigger(Trigger):
def __init__(self, phrase):
self.phrase = phrase
def evaluate(self, story):
return self.phrase in story.get_title() or \
self.phrase in story.get_summary() or \
self.phrase in story.get_subject()
#======================
# Part 3
# Filtering
#======================
def filter_stories(stories, triggerlist):
"""
Takes in a list of NewsStory-s.
Returns only those stories for whom
a trigger in triggerlist fires.
"""
res =
for story in stories:
for trigger in triggerlist:
if trigger.evaluate(story):
res.append(story)
break
return res
#======================
# Part 4
# User-Specified Triggers
#======================
def readTriggerConfig(filename):
"""
Returns a list of trigger objects
that correspond to the rules set
in the file filename
"""
# Here's some code that we give you
# to read in the file and eliminate
# blank lines and comments
triggerfile = open(filename, "r")
all = [ line.rstrip() for line in triggerfile.readlines() ]
lines =
for line in all:
if len(line) == 0 or line[0] == '#':
continue
lines.append(line)
triggers =
trigger_map = {}
for line in lines:
linesplit = line.split(" ")
# make new trigger
if linesplit[0] != "ADD":
trigger = makeTrigger(trigger_map, linesplit[1],
linesplit[2:], linesplit[0])
#add triggers
else:
for name in linesplit[1:]:
triggers.append(trigger_map[name])
return triggers
import _thread
def main_thread(p):
# A sample trigger list - you'll replace
# this with something more configurable in Problem 11
t1 = SummaryTrigger("Australia")
t2 = TitleTrigger("Google")
t3 = PhraseTrigger("White House")
t4 = OrTrigger(t2, t3)
triggerlist = [t1, t4]
triggerlist = readTriggerConfig("triggers.txt")
guidShown =
while True:
print("Polling...")
# Get stories from Google's Top Stories RSS news feed
stories = process("http://news.google.com/news?output=rss")
# Get stories from Yahoo's Top Stories RSS news feed
stories.extend(process("http://rss.news.yahoo.com/rss/topstories"))
# Only select stories we're interested in
stories = filter_stories(stories, triggerlist)
# Don't print a story if we have already printed it before
newstories =
for story in stories:
if story.get_guid() not in guidShown:
newstories.append(story)
for story in newstories:
guidShown.append(story.get_guid())
p.newWindow(story)
print("Sleeping...")
time.sleep(SLEEPTIME)
SLEEPTIME = 60 #seconds -- how often we poll
if __name__ == '__main__':
p = Popup()
_thread.start_new_thread(main_thread, (p,))
p.start()
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