I need help with this lab. It’s one. 13. One lab introduction to cryptography ( classes/ constructors) This is the current code that must stay within the program and cannot be changed, only amended:class CipherTest: # TODO: Define a constructor with parameters to #initialize instance attributes (shift = 0, direction = 'r', text = "Testing" ) #set the default values of the parameters and also set the #these values as pf the user passed def __init__(self, shift=0, direction='r', text="Testing"): self.shift = shift self.direction = direction self.text = text #Shift to right function def shift_to_right(self): encrypted_Text = "" for i in range(len(self.text)): c = self.text[i] #Encrypt upper case if(c == ' '): encrypted_Text += ' ' elif (c.isupper()): encrypted_Text += chr((ord(c) + self.shift-65) % 26 + 65) #Encrypt lower case else: encrypted_Text += chr((ord(c) + self.shift-97) % 26 + 97) return encrypted_Text #Shift to left function def shift_to_left(self): encrypted_Text = "" for i in range(len(self.text)): c = self.text[i] #Encrypt upper case if(c == ' '): encrypted_Text += ' ' elif (c.isupper()): encrypted_Text += chr((ord(c) - self.shift-65) % 26 + 65) #Encrypt lower case else: encrypted_Text += chr((ord(c) - self.shift-97) % 26 + 97) return encrypted_Text if __name__ == "__main__": # TODO: create input for text, shift value, and direction (use lower( ) to keep l and r lower case #read the input for each variable and store it into the vairables text = input("Enter the text: ") shift = int(input("Enter the shift value: ")) #note, the input was turned to lower case direction = input("Enter the direction (r or l): ").lower() # TODO: create a cipher item and use the constructor with the above input values #create the object of the class and pass all the inputs to its constructor CipherTestObj = CipherTest(shift, direction, text) # TODO: use control structures to call shift_to_right() if direction is right and call shift_to_left if direction # is left. Make sure you print out the return encrypted message here. #variable to store the encrypted text encryptedText = "" #based on the direction entered by the user, call the appropriate functions if CipherTestObj.direction == 'r': encryptedText = CipherTestObj.shift_to_right() elif CipherTestObj.direction == 'l': encryptedText = CipherTestObj.shift_to_left() #if the direction is not valid, print the error message else: print("Invalid direction was found!!") #print the final returned Encrypted Text print("Encrypted text:", encryptedText)This is the copy of the current lab, and the error message on line 51 that I am having a hard time with.Thank you for your help. ry > CYB 135: Object-Oriented Scripting Language II home > 1.13: LAB: Introduction to Cryptography (classes/constructors)46 if name==main":47# TODO: create input for text, shift value, and direction (use Lower() to keep L and r Lower caseto search48495051525354555657585960616253#read the input for each variable and store it into the vairablestext input ("Enter the text: ")=shift = int(input ("Enter the shift value: "))#note, the input was turned to Lower casedirection = input ("Enter the direction (r or 1): ").lower()# TODO: create a cipher item and use the constructor with the above input values#create the object of the class and pass all the inputs to its constructorCipher TestObj = CipherTest (shift, direction, text)# TODO: use control structures to call shift_to_right() if direction is right and call shift_to_left if directio# is left. Make sure you print out the return encrypted message here.Develop modeSubmit modeEnter program input (optional)Cryptography is fun!Run programRun your program as often as you'd like, before submitting for grading. Below, type any neededinput values in the first box, then click Run program and observe the program's output in thesecond box.Input (from above) →Program errors displayed hereTraceback (most recent call last):File "main.py", line 51, in shift int (input ("Enter the shift value: "))EOFError: EOF when reading a lineProgram output displayed hereEnter the text: Enter the shift value:Wmain.py(Your program)→→→→Output (shown below)EzyBooks ca 1.13 LAB: Introduction to Cryptography (classes/constructors)Cryptography is the practice of encryption. Information Security uses cryptography techniques to encrypt and decrypt data. A simpleencryption method might take plaintext and mix up the letters using some predetermined pattern and then use that pattern to decrypt thedata for reading.Ciphers are the algorithms used to put the data into its secret pattern and then systematically decrypt it for reading. This script is going touse a famous simple cipher called the Caesar Cipher. It is a substitution cipher where each letter in the text is 'shifted' in a certain numberof places. It uses the alphabet as the primary pattern and then based on the shift number, it would shift all the letters and replace thealphabet with our pattern.For example, if our shift number was 3, then A would be replaced with D, if we performed a right shift. As an example:Text = "THE CAT IS VISIBLE AT MIDNIGHT" Ciphertext = "WKH FDW LV YLVLEOH DW PLGQLIJKW"The keys to decrypt this message are the shift number and the direction. The shift value can be any integer from 0-25. The above exampleuses shift = 3 and the shift direction is right or direction = 'r'.Complete the CipherTest class by adding a constructor to initialize a cipher item. The constructor should initialize the shift to 0, and thedirection to 'r' for right shift. If the constructor is call with a shift lue, and direction, the constructor should assign each instanceattribute with the appropriate parameter value.Complete the following TODO's: (1) create input for text, shift value, and direction (use lower()) to keep I and r lower case (2) create a cipheritem and use the constructor with the above input values (3) use control structures to call shifttoright() if direction is right and call shifttoleftif direction is left. Make sure you print out the return encrypted message inside the control structures.We can create the encrypted text by using the ord () function. This function will return an integer that represents the Unicode code point ofthe character. Character are represented by different values for upp/er and lower case so an 'a' returns the integer 97. By using the unicodevalue we can add and subtract our shift value represented by an integer.The given program accepts as input a text string as our message to be encrypted, a shift value, and a direction of 'I' for left and 'r' for right.The program creates a cipher item using the input values. The program outputs the encrypted message based on the shift value and thedirection provided.Ex: If the input is text = "Cryptography is fun!", shift = 4, and direction = 1.The output is:Ynulpkcnwldu eo bajk442626 1727602.qxaray7LAB1.13.1: LAB: Introduction to Cryptography (classes/constructors)0/108ACGORai

I need help with this lab. It’s one. 13. One lab introduction to cryptography ( classes/ constructors) This is the current code that must stay within the program and cannot be changed, only amended: class CipherTest: # TODO: Define a constructor with parameters to #initialize instance attributes (shift = 0, direction = 'r', text = "Testing" ) #set the default values of the parameters and also set the #these values as pf the user passed def __init__(self, shift=0, direction='r', text="Testing"): self.shift = shift self.direction = direction self.text = text #Shift to right function def shift_to_right(self): encrypted_Text = "" for i in range(len(self.text)): c = self.text[i] #Encrypt upper case if(c == ' '): encrypted_Text += ' ' elif (c.isupper()): encrypted_Text += chr((ord(c) + self.shift-65) % 26 + 65) #Encrypt lower case else: encrypted_Text += chr((ord(c) + self.shift-97) % 26 + 97) return encrypted_Text #Shift to left function def shift_to_left(self): encrypted_Text = "" for i in range(len(self.text)): c = self.text[i] #Encrypt upper case if(c == ' '): encrypted_Text += ' ' elif (c.isupper()): encrypted_Text += chr((ord(c) - self.shift-65) % 26 + 65) #Encrypt lower case else: encrypted_Text += chr((ord(c) - self.shift-97) % 26 + 97) return encrypted_Text if __name__ == "__main__": # TODO: create input for text, shift value, and direction (use lower( ) to keep l and r lower case #read the input for each variable and store it into the vairables text = input("Enter the text: ") shift = int(input("Enter the shift value: ")) #note, the input was turned to lower case direction = input("Enter the direction (r or l): ").lower() # TODO: create a cipher item and use the constructor with the above input values #create the object of the class and pass all the inputs to its constructor CipherTestObj = CipherTest(shift, direction, text) # TODO: use control structures to call shift_to_right() if direction is right and call shift_to_left if direction # is left. Make sure you print out the return encrypted message here. #variable to store the encrypted text encryptedText = "" #based on the direction entered by the user, call the appropriate functions if CipherTestObj.direction == 'r': encryptedText = CipherTestObj.shift_to_right() elif CipherTestObj.direction == 'l': encryptedText = CipherTestObj.shift_to_left() #if the direction is not valid, print the error message else: print("Invalid direction was found!!") #print the final returned Encrypted Text print("Encrypted text:", encryptedText) This is the copy of the current lab, and the error message on line 51 that I am having a hard time with. Thank you for your help.