Question

Using the template code provided in the braille translator.py file as a starting point, complete functions enocode and decode that convert alphabets back and forth between normal English and English Braille. OOOOOOOO. • • • mn Op W X Y Z (Modified from: https://en.wikipedia.org/wiki/English_Braille) Figure 1: The various Braille alphabets. The above table shows the various Braille alphabets corresponding to English alphabets a-z. Each Braille alphabet is represented as a 3 x 2 matrix (three rows and two columns). The solid black dots represent elements with value 1 in the matrix and the empty circles represent elements with value 0. For example, the Braille alphabet corresponding to the letter a can be represented using a nested list as: i [[1, 0], [0, 0], [0, 0]] If you choose to use a dictionary data structure to map English characters to Braille characters, the dictionary could look like the following. braille_table = {"a": [[1, 0], [0, 0], [0, 0]], "b": [[1, 0], [1, 0], [0, 0]], "C": [[1, 1], [0, 0], [0, 0]],

Answer 1

NOTE: You have not given instructions for encode, so I have not done it. Moreover the example given for cat is incorrect. So, I have taken other example."

Code is here and screenshots are provided below for help:

braille_table={"a":[[1,0],[0,0],[0,0]],
               "b":[[1,0],[1,0],[0,0]],
               "c":[[1,1],[0,0],[0,0]],
               "d":[[1,1],[0,1],[0,0]],
               "e":[[1,0],[0,1],[0,0]],
               "f":[[1,1],[1,0],[0,0]],
               "g":[[1,1],[1,1],[0,0]],
               "h":[[1,0],[1,1],[0,0]],
               "i":[[0,1],[1,0],[0,0]],
               "j":[[0,1],[1,1],[0,0]],
               "k":[[1,0],[0,0],[1,0]],
               "l":[[1,0],[1,0],[1,0]],
               "m":[[1,1],[0,0],[1,0]],
               "n":[[1,1],[0,1],[1,0]],
               "o":[[1,0],[0,1],[1,0]],
               "p":[[1,1],[1,0],[1,0]],
               "q":[[1,1],[1,1],[1,0]],
               "r":[[1,0],[1,1],[1,0]],
               "s":[[0,1],[1,0],[1,0]],
               "t":[[0,1],[1,1],[1,0]],
               "u":[[1,0],[0,0],[1,1]],
               "v":[[1,0],[1,0],[1,1]],
               "w":[[0,1],[1,1],[0,1]],
               "x":[[1,1],[0,0],[1,1]],
               "y":[[1,1],[0,1],[1,1]],
               "z":[[1,0],[0,1],[1,1]]}
             
def decode(file_name):
    f1=open(file_name,"r")
    Lines=f1.readlines()
    word=""
    for line in Lines:
        l1=[]
        l2=[]
        l3=[]
        l4=[]
        for i in range(0,2):
            l1.append(int(line[i]))
        for i in range(2,4):
            l2.append(int(line[i]))
        for i in range(4,6):
            l3.append(int(line[i]))
        l4=[l1,l2,l3]
        for letter,key in braille_table.items():
            if key==l4:
                word+=letter
    return word

file_name=input("Enter file name: ")
plain_text=decode(file_name)
print(plain_text)

screenshots of code with comments:

braille_table 11 #Dictionary for braille conversion {"a":[[1,0],[0,0],[0,0]], "6":[[1,0],[1,0],[0,0]], "C":[[1,1],[0,0],[0,0]], "d":[[1,1],[0,1],[0,0]], "e":[[1,0],[0,1],[0,0]], f":[[1,1],[1,0],[0,0]], "g":[[1,1],[1,1],[0,0]], "h":[[1,0],[1,1],[0,0]], "i":[[0,1],[1,0],[0,0]], "j":[[0,1],[1,1],[0,0]], "k":[[1,0],[0,0],[1,0]], "l":[[1,0],[1,0],[1,0]], "m":[[1,1],[0,0],[1,0]], "n":[[1,1],[0,1],[1,0]], "0":[[1,0],[0,1],[1,0]], "p":[[1,1],[1,0],[1,0]], "q":[[1,1],[1,1],[1,0]], "T":[[1,0],[1,1],[1,0]], "s":[[0,1],[1,0],[1,0]], "t":[[0,1],[1,1],[1,01], "U":[[1,0],[0,0],[1,1]], "v":[[1,0],[1,0],[1,1]], "W":[[0,1],[1,1],[0,1]], "x":[[1,1],[0,0],[1,1]], "y":[[1,1],[0,1],[1,1]], "z":[[1,0],[0,1],[1,1]]}

decode(file_name): #Takes the name of file containing matrix of braille of word as input f1=open(file_name, "r") #Open file in read mode Lines=f1.readlines() #Stores all lines in Lines word="" #To store the final word obtained for line in Lines: 11=[] 12=[] 13=[] 14=[] for i in range(0,2): 11.append(int(line[i])) for i in range(2,4): 12.append(int(line[i])) for i in range(4,6): 13.append(int(line[i])) 14=[11, 12, 13] #Changes each line into the format stored in dictionary i.e. list of 3 lists with 2 elements inside. for letter, key in braille_table. items(): if key==14: #Checks if 14 matches with any value in the dictionary or not word+=letter #Appends the corresponding letter to word return word file_name=input("Enter file name: ") plain_text=decode(file_name) print(plain_text)

text file used for example

Open text.txt -Desktop Save 00 100000 101000 110000

output of code

Enter file name: text.txt abc

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