Question

Pythong Program 4 should first tell users that this is a word analysis software. For any user-given text file, the program will read, analyze, and write each word with the line numbers where the word is found in an output file. A word may appear in multiple lines. A word shows more than once at a line, the line number will be only recorded one time.

Ask a user to enter the name of a text file. Using try/except for invalid user input. Then the program reads the contents of the text file and create a dictionary in which the key-value pairs are described as follows:

• Key. The key are the individual words found in the file.
• Value. Each value is a list that contains the line numbers in the file where the word (the key) is found. Be aware that a list may have only one element.

Once the dictionary has been built, the program should create another text file for output, named “words_index.txt”. Next, write the contents of the dictionary to the file as an alphabetical listing of the words that are stored as keys in the dictionary (sorting the keys), along with the line numbers where the words appear in the original file. Please see the sample file for your reference.

Looking to seeing everyone to submit a well-done program! Here are some tips:

• Documents/Comments of your program (Never more)
• Testing your program by the given two files, Kennedy.txt and romeo.txt. The output file of the Kennedy_index.txt, Kennedy_index_B.txt, Kennedy_index_C.txt, for input file “kennedy.txt” and the output file romeo_index.txt, romeo_index_B.txt, romeo_index_C.txt, for input file romeo.txt have been posted for your reference.
• Remember the output file name of your program is words_index.txt.

KENNEDY.TXT

We observe today not a victory
of party but a celebration
of freedom symbolizing an end
as well as a beginning
signifying renewal as well
as change

ROMEO.TXT

But soft what light through yonder window breaks

It is the east and Juliet is the sun

Arise fair sun and kill the envious moon

Who is already sick and pale with grief

Answer 1

Here is the code:

import collections

title = "* This is a word analysis software *"
stars = len(title)

print("*"*stars)
print(title)
print("*"*stars)
print()

filename = input("Enter name of the file to read: ")

try:
myfile = open(filename+".txt",'r+')
wordcount = {}
line = 1

for i in myfile.readlines():
words = i.split(" ")
for j in words:
j = j.rstrip()
if j in wordcount:
if line in wordcount[j]:
continue
wordcount[j] += [ line ]
else:
wordcount[j] = [ line ]
line += 1

sortedKeys = sorted((wordcount.items()))

od = collections.OrderedDict(sortedKeys)

words_index = open('word_index.txt','w')

for i, j in od.items():
words_index.write(f"{i} : {j} \n")
words_index.close()
except:
print("\nInvalid file name! Check whether file exists in the same directory or not! ")

-------------------------------------------------------------------------------------------------------------------------------------------------------------The Complete Code:

import collections title = "* This is a word analysis software *" stars = len(title) print("*"*stars) print(title) print("*"*stars) print(). filename = input("Enter name of the file to read: "), try: myfile = open(filename+".txt","r+') wordcount = {} line = 1 for i in myfile.readlines(): words = i.split(" ") for j in words: j = j.rstripo. if j in wordcount: if line in wordcount[j]: continue wordcount[j] += [ line ] else: wordcount[j] = [ line ] line += 1 sortedKeys = sorted( (wordcount.items()); od = collections.OrderedDict(sortedKeys), words_index = open('word_index.txt', 'w'), for i, j in od. items(): words_index.write(f"{i} : {j} \n"), words_index.close() except: print("\nInvalid file name! Check whether file exists in the same directory or not! ");

-------------------------------------------------------------------------------------------------------------------------------------------------------------

i) Exception handling for incorrect filenames:

* ****** D Files oi main.py saved 1 import collections * This is a word analysis software + IIIIIIIIIIIIIIII main.py title = "* This is a word analysis software *" stars = len(title) Enter name of the file to read: ggg demo.txt word_index.txt Invalid file name! Check whether file exists in the same directory or not! print("*"*stars) print(title) print("*"*stars) print() filename = input("Enter name of the file to read: ") try: myfile = open(filename+".txt", 'r+') wordcount = {} line = 1

ii) taking user input (correct filename):

Files main.py E saved 1 import collections * This is a word analysis software * ************* ********* main.py demo.txt title = "* This is a word analysis software *" stars = len(title) Enter name of the file to read: demo word_index.txt print("*"*stars) print(title) print("*"*stars) print() filename = input("Enter name of the file to read: ") try: myfile = open(filename+".txt", 'r+') wordcount = {} line = 1

iii) Input and Outputfiles:

Files e main.py demo.txt demo.txt saved 1 we observe today not a victory 2 of party but a celebration 3 of freedom symbolizing an end 4 as well as a beginning 5 signifying renewal as well 6 as change : word_index.txt

| Files: è main.py demo.txt word_index.txt : to 00 word_index.txt saved 1 a : [1, 2, 4] 2 an : [3] as : [4, 5, 6] beginning : [4] but : [2] celebration : [2] change : [6] end : [3] freedom : [3] 10 not : [1] 11 observe : [1] of : [2, 3] 13 party : [2] renewal : [5] 15 signifying: [5] symbolizing : [3] today : [1] victory : [1] 19 we : [1] 20 well : [4, 5]