Question

In python,

PART A: I am trying to get a dictionary with size(4, 5, 6) as keys and an array for key containing a list of values (words from file of respective size) associated with those keys

I am reading from a file of strings, where I am only interested with words of length 4, 5, and 6 to compute my program reading the text file line by line:

At first, I have an empty dictionary then to that I want to add values to my arrays based on their respective size of strings

words_dictionary = open('file')
word_list = dict([(4, []), (5, []), (6, [])])
print("Dictionary empty at initialization")
print(word_list)

def main():
  lines = words_dictionary.readline().strip()
  count = 1

  for line in words_dictionary:                      //I want to use a for loop, but I don't know how to go about that
      word_length = len(lines)
      if (word_length >= 4) and (word_length <= 6):
          lines = words_dictionary.readline().strip()
          words_dictionary[0] =  words_dictionary[line[0]].append(line[1])       //Here is where I am trying to add values to the arrays
          words_dictionary[1] = words_dictionary[line[0]].append(line[1]) 
          words_dictionary[2] = words_dictionary[line[0]].append(line[1])  
          print("Line {}: {} {} ".format(count, words_dictionary, word_length))
      lines = words_dictionary.readline().strip()
      count += 1

main()

input file: { backspace, scan, power, vegan,delete, hope, meeting, limits, videos, phone, love, envy}

Example output:

4: [love, hope, scan, envy]

5 : [phone , power, vegan]

6:[delete, limits, videos]

Answer 1

# Open file in read mode
words_dictionary = open("infile.txt", "r")

# Empty dictionary
word_list = {4: [], 5: [], 6: []}

# Printing initial message
print("Dictionary empty at initialization")
print(word_list)

def main():
   # Iterate line by line in file
   for line in words_dictionary:
       line = line.strip() # Strippng lines
       word_length = len(line) # Length of word
       # appending value to respective keys in dict based on word length
       if(word_length == 4):
           word_list[4].append(line)
       if(word_length == 5):
           word_list[5].append(line)
       if(word_length == 6):
           word_list[6].append(line)

main()
print(word_list)

Input file

OUTPUT