在测试中获取错误信息.正确的5/8

Question

我正在运行一个过滤故事并返回过滤故事数量的函数。代码在下面——测试中的错误在下面。这些错误似乎只是在计算过滤器故事的数量时出现了错误，这是一个简单的错误，但一直在试图解决它。过滤的故事数量不匹配。请帮助。

我代码:

def filterStories(stories, triggerlist):
   newstories = []
   for story in stories:
       for trigger in triggerlist:
           if trigger.evaluate(story) == True:
               newstories.append(story)
       stories = newstories
   return stories
class WordTrigger(Trigger):
    def __init__(self,word):
        self.word = word.lower()
    def changeChars(self,text):
        final = ""
        for c in text:
            if c in string.punctuation:
                final += " "
            else:
                final += c
        return final
    def isWordIn(self,text):
        comp = self.changeChars(text)
        list = comp.lower().split(" ")
        return self.word in list
# TODO: TitleTrigger
class TitleTrigger(WordTrigger):
    def evaluate(self,story):
        return self.isWordIn(story.getTitle())
# TODO: SubjectTrigger
class SubjectTrigger(WordTrigger):
    def evaluate(self,story):
        return self.isWordIn(story.getSubject())
# TODO: SummaryTrigger
class SummaryTrigger(WordTrigger):
    def evaluate(self,story):
        return self.isWordIn(story.getSummary())
class PhraseTrigger(Trigger):
    def __init__(self,phrase):
        self.phrase = phrase
    def evaluate(self,story):
        return self.phrase in story.getTitle() or self.phrase in story.getSubject() or self.phrase in story.getSummary() 

----------------- 从测试的错误消息 -------------------------------------------------

Test: filterStories 3
Your output:
Trigger 1: TrueTrigger() - always returns True
Trigger 2: TrueTrigger() - always returns True
Story with title: "MIT and Russia Partner with Skolkovo Tech" and subject: "New school located near Moscow"
In filteredStories?  True
Story with title: "Russian dignitaries Visit USA" and subject: "Obama meets with Russian President Vladimir Putin"
In filteredStories?  True
Story with title: "Russia Overrun With Friendly Tigers" and subject: "Putin poses for photo op with cuddly felines"
In filteredStories?  True
Story with title: "Mitt Romney Defeated" and subject: "Obama edges win over Republican challenger Mitt Romney"
In filteredStories?  True
Number of filtered stories:  8
Story titles in the list of filtered stories your code generated:
['MIT and Russia Partner with Skolkovo Tech', 'MIT and Russia Partner with Skolkovo Tech', 'Mitt Romney Defeated', 'Mitt Romney Defeated', 'Russia Overrun With Friendly Tigers', 'Russia Overrun With Friendly Tigers', 'Russian dignitaries Visit USA', 'Russian dignitaries Visit USA']
Correct output:
Trigger 1: TrueTrigger() - always returns True
Trigger 2: TrueTrigger() - always returns True
Story with title: "MIT and Russia Partner with Skolkovo Tech" and subject: "New school located near Moscow"
In filteredStories?  True
Story with title: "Russian dignitaries Visit USA" and subject: "Obama meets with Russian President Vladimir Putin"
In filteredStories?  True
Story with title: "Russia Overrun With Friendly Tigers" and subject: "Putin poses for photo op with cuddly felines"
In filteredStories?  True
Story with title: "Mitt Romney Defeated" and subject: "Obama edges win over Republican challenger Mitt Romney"
In filteredStories?  True
Number of filtered stories:  4
Story titles in the list of filtered stories your code generated:
['MIT and Russia Partner with Skolkovo Tech', 'Mitt Romney Defeated', 'Russia Overrun With Friendly Tigers', 'Russian dignitaries Visit USA']
Test: filterStories 4
Your output:
Trigger 1: TitleTrigger("Russia")
Trigger 2: SubjectTrigger("Putin")
Trigger 3: TitleTrigger("MIT")
Story with title: "MIT and Russia Partner with Skolkovo Tech" and subject: "New school located near Moscow"
In filteredStories?  True
Story with title: "Russian dignitaries Visit USA" and subject: "Obama meets with Russian President Vladimir Putin"
In filteredStories?  True
Story with title: "Russia Overrun With Friendly Tigers" and subject: "Putin poses for photo op with cuddly felines"
In filteredStories?  True
Story with title: "Mitt Romney Defeated" and subject: "Obama edges win over Republican challenger Mitt Romney"
In filteredStories?  False
Number of filtered stories:  5
Story titles in the list of filtered stories your code generated:
['MIT and Russia Partner with Skolkovo Tech', 'MIT and Russia Partner with Skolkovo Tech', 'Russia Overrun With Friendly Tigers', 'Russia Overrun With Friendly Tigers', 'Russian dignitaries Visit USA']
Correct output:
Trigger 1: TitleTrigger("Russia")
Trigger 2: SubjectTrigger("Putin")
Trigger 3: TitleTrigger("MIT")
Story with title: "MIT and Russia Partner with Skolkovo Tech" and subject: "New school located near Moscow"
In filteredStories?  True
Story with title: "Russian dignitaries Visit USA" and subject: "Obama meets with Russian President Vladimir Putin"
In filteredStories?  True
Story with title: "Russia Overrun With Friendly Tigers" and subject: "Putin poses for photo op with cuddly felines"
In filteredStories?  True
Story with title: "Mitt Romney Defeated" and subject: "Obama edges win over Republican challenger Mitt Romney"
In filteredStories?  False
Number of filtered stories:  3
Story titles in the list of filtered stories your code generated:
['MIT and Russia Partner with Skolkovo Tech', 'Russia Overrun With Friendly Tigers', 'Russian dignitaries Visit USA']

Answer 1

在将故事插入filterlist之前，只需在函数filterstories中添加以下测试:

   for trigger in triggerlist:
       if trigger.evaluate(story) == True:
           if story not in newstories:
               newstories.append(story)
   stories = newstories

。

实际上您正在复制条目，这导致您的测试失败。