Question

Problem 3 Write a function named repeat_words that takes two string parameters:

1. in_file: the name of an input file that exists before repeat_words is called

2. out_file: the name of an output file that repeat_words creates

Assume that the input file is in the current working directory and write the output file to that directory.

For each line of the input file, the function repeat_words should write to the output file all of the words that appear more than once on that line. Each word should be lower cased and stripped of leading and trailing punctuation. Each repeated word on a line should be written to the corresponding line of the output file only once, regardless of the number of times the word is repeated.

For example, if the following is the content of the file catInTheHat.txt:

Too wet to go out and too cold to play ball.

So we sat in the house.

We did nothing at all.

So all we could do was to Sit! Sit! Sit! Sit!

The following function call:

inF = 'catInTheHat.txt'

outF = 'catRepWords.txt'

repeat_words(inF, outF)

should create the file catRepWords.txt with the content:

too to

sit

Hint: Be sure to test your solution with input in which some repeated words on a line are a mixture of upper and lower case, and in which repeated words sometimes are preceded or followed by punctuation.

Answer 1

Thanks for posting the question, we are glad to help you. Below is the complete code in python. I had to write a small utility function to strip off and punctuation symbols at the end.

The code uses list() dictionary to track the words and finally outputs the repeated words in the output file. Refer the screenshot for code indentation and output sample

Note : you may need to make changes to the below line based on the file path available in your system

Thats It. Thank you so much :)

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def repeat_words(inF, outF):
  
ouput_lines=[]
with open(inF,'r') as input_file:
for line in input_file:
words = line.split()
word_dict={}
for word in words:
word = remove_punctuation_from_end(word).lower()
if word_dict.get(word)==None:
word_dict[word]=1
else:
word_dict[word]= word_dict.get(word) + 1
words_freq_greater_than_one=[]
for word,count in word_dict.items():
if count>1:
words_freq_greater_than_one.append(word)
  
if len(words_freq_greater_than_one)>0:   
ouput_lines.append(words_freq_greater_than_one)   
  
with open(outF,'w') as output_file:
for line in ouput_lines:
for word in line:
output_file.write(word + " ")
output_file.write("\r\n")

def remove_punctuation_from_end(word):
  
last_letter = word[-1]
if(last_letter.isalpha()):
return word
else:
return remove_punctuation_from_end(word[:-1])

inF = "D:\\catInTheHat.txt"
outF = "D:\\catRepWords.txt"
repeat_words(inF, outF)

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Image screenshot

thank you so much :) Please post your comments if you have any query, i'll be happy to assist you.

A thumbs up please !!!