Question

(Python 3) Write a program that reads the contents of a text file. The program should then create a dictionary in which the keys are individual words found in the file and the values are the number of times each word appears and a list that contains the line numbers in the file where the word (the key) is found. Then the program will create another text file. The file should contain an alphabetical listing of the words that are stored as keys in the dictionary, along with the values of the keys.

Answer 1

Answer:

Input file:

Output file:

Raw Code:

file = "input.txt" # You can change it to an existing file name
data = open(file,"r").readlines() # Reading file line by line to list
n = len(data) # no of lines
dic = {} # Storing Frequencies of words
key = "the key"    # You can change it
List = []            # Line no when it contains 'the key' as a word
for i in range(n):
   if key in data[i]:   # Key comparison
       List.append(i) # Note: line number starts from 0
   words = data[i].split()       # Spliting line into words
   for j in words: # Frequencies for words
       if j in dic:
           dic[j] = dic[j] + 1
       else:
           dic[j] = 1
out_file = open("output.txt","w") # Creating a new file
keys = list(dic.keys())# Taking keys
keys.sort() # Sorting keys
for i in keys: # Iterate through sorted keys
   out_file.write(i + "\t" + str(dic[i]) + "\n") # Write into files
out_file.close() # Closing file
# If you want to print the List then uncomment out this
# print(List)