Question

Please write a python code for the following. Use dictionaries and list comprehensions to implement the...

Please write a python code for the following. Use dictionaries and list comprehensions to implement the functions defined below. You are expected to re-use these functions in implementing other functions in the file. Include a triple-quoted string at the bottom displaying your output.

Here is the starter outline for the homework:

d.

def count_words(text):

""" Count the number of words in text """

return 0

e.

def words_per_sentence(text):

return 0.0

f.

def word_count(text, punctuation=".,?;"):

""" Return a dictionary of word:count pairs.

(words are the keys, counts are the values). """

gettysburg_address = """

Four score and seven years ago our fathers brought forthon this continent, a new nation, conceived in Liberty,and dedicated to the proposition that all men are createdequal. Now we are engaged in a great civil war, testingwhether that nation, or any nation so conceived and sodedicated, can long endure. We are met on a greatbattlefield of that war. We have come to dedicate aportion of that field, as a final resting place forthose who here gave their lives that that nation mightlive. It is altogether fitting and proper that we shoulddo this. But, in a larger sense, we can not dedicate, wecan not consecrate, we can not hallow this ground.The brave men, living and dead, who struggled here,have consecrated it, far above our poor power to addor detract. The world will little note, nor longremember what we say here, but it can never forget whatthey did here. It is for us the living, rather, to bededicated here to the unfinished work which they whofought here have thus far so nobly advanced. It israther for us to be here dedicated to the great taskremaining before us—that from these honored dead wetake increased devotion to that cause for which theygave the last full measure of devotion that we herehighly resolve that these dead shall not have died invain that this nation, under God, shall have a newbirth of freedom and that government of the people, bythe people, for the people, shall not perish from theearth.

"""

Homework Answers

Answer #1

def count_words(text:str)->int:
    #First split the string into separate lines
    lines = text.split("\n")
    count = 0
    #For each line in text, do this
    for line in lines:
        #List of punctuations to remove from text
        punctuations = list(",.?!:'\"")
        #Check for each character in text
        for char in line:
            if char in punctuations:
                line = line.replace(char, "")
        #Now split string using whitespace
        lst = line.split(" ")
        #Do not count any empty string
        for i in range(len(lst)):
            if len(lst[i])!=0:
                count += 1
  
    return count

def words_per_sentence(text:str)->float:
    """Function to calculate average words per sentence in the text"""
    sentences = text.split(". ")
    #List to store the word count for each sentence
    lst = []
    for sentence in sentences:
        lst.append(count_words(sentence))
  
    #Calculate word per sentence
    wps = sum(lst)/len(lst)
  
    return wps

def word_count(text, punctuation=".,?;"):
    #List of all the words
    words = []
    #Dictionary for storing word count
    count_dict = dict()
  
    #First split the string into separate lines
    lines = text.split("\n")
    #For each line in text, do this
    for line in lines:
       #Check for each character in text
        for char in line:
            if char in punctuation:
                line = line.replace(char, "")
        #Now split string using whitespace
        lst = line.split(" ")
        #Append non-empty string to list words
        for s in lst:
            if len(s)>0:
                words.append(s)
      
    #Generate dictionary now
    for word in words:
        if word in count_dict.keys():
            count_dict[word] += 1
        else:
            count_dict[word] = 1
  
    return count_dict
          
def main():
    gettysburg_address = """
    Four score and seven years ago our fathers brought forthon this continent, a new nation, conceived
    in Liberty,and dedicated to the proposition that all men are createdequal. Now we are engaged in a
    great civil war, testingwhether that nation, or any nation so conceived and sodedicated, can long
    endure. We are met on a greatbattlefield of that war. We have come to dedicate aportion of that
    field, as a final resting place forthose who here gave their lives that that nation mightlive. It is
    altogether fitting and proper that we shoulddo this. But, in a larger sense, we can not dedicate,
    we can not consecrate, we can not hallow this ground.The brave men, living and dead, who struggled
    here,have consecrated it, far above our poor power to addor detract. The world will little note, nor
    longremember what we say here, but it can never forget whatthey did here. It is for us the living,
    rather, to bededicated here to the unfinished work which they whofought here have thus far so
    nobly advanced. It israther for us to be here dedicated to the great taskremaining before us—that
    from these honored dead wetake increased devotion to that cause for which theygave the last full
    measure of devotion that we herehighly resolve that these dead shall not have died invain that this
    nation, under God, shall have a newbirth of freedom and that government of the people, bythe
    people, for the people, shall not perish from theearth.
    """
  
    print("Count of words = ", count_words(gettysburg_address))
    print("Words per sentence = ", words_per_sentence(gettysburg_address))
    print("Word count:")
    print(word_count(gettysburg_address))
  
if __name__=="__main__":
    main()

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