Day8.py

# # Functions with Inputs

# def greet():
#     print("Hello")
#     print("How Do You Do ?")
# greet()

# # Functions that allows the input

# def greet_with_name(name):
#     print(f"Hello {name}")
#     print(f"How Do You Do {name}?")
# greet_with_name("John")

# functions with more than 1 input

# def greet_with(name, location):
#     print(f"Hello {name}")
#     print(f"What is it like in {location}?")

# greet_with("Mr DN","Surat")

# greet with keyword arguments

# def greet_with(name= "Mr DN", location = "Surat"):
#     print(f"Hello {name}")
#     print(f"What is it like in {location}?")

# greet_with("Mr","London")

# import math

# test_h = int(input("Height of a Wall: "))
# test_w = int(input("Width of a Wall: "))
# converage = 5
# def pain_calc(height = test_h, width = test_w, cover = converage):
#     area = height * width
#     # num_of_cans = area / cover
#     # round_of = round(num_of_cans)
#     num_of_cans = math.ceil(area/cover)
#     print(f"You will need {num_of_cans} cans of paint.")
#     return num_of_cans
# pain_calc()

# Prime Number Check

# n = int(input("Enter Number to check whether number is prime or not: "))
# def prime_n(n):
#     is_prime = True
#     if n <= 1:
#         return False
#     for i in range(2,n):
#         if n % i == 0:
#             is_prime=False
#     if is_prime:
#         print("Number is Prime")
#     else:
#         print("Number is not Prime")

# prime_n(n)

# Caesar Cipher 
alphabet = ['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z']

def caesar(start_text, shift_amount, cipher_direction):
  end_text = ""
  if cipher_direction == "decode":
    shift_amount *= -1
  for char in start_text:
    if char in alphabet:
      position = alphabet.index(char)
      new_position = position + shift_amount
      end_text += alphabet[new_position]
    else:
      end_text += char
  print(f"Here's the {cipher_direction}d result: {end_text}")

#TODO-1: Import and print the logo from art.py when the program starts.
logo = """           
 ,adPPYba, ,adPPYYba,  ,adPPYba, ,adPPYba, ,adPPYYba, 8b,dPPYba,  
a8"     "" ""     `Y8 a8P_____88 I8[    "" ""     `Y8 88P'   "Y8  
8b         ,adPPPPP88 8PP"""""""  `"Y8ba,  ,adPPPPP88 88          
"8a,   ,aa 88,    ,88 "8b,   ,aa aa    ]8I 88,    ,88 88          
 `"Ybbd8"' `"8bbdP"Y8  `"Ybbd8"' `"YbbdP"' `"8bbdP"Y8 88   
            88             88                                 
           ""             88                                 
                          88                                 
 ,adPPYba, 88 8b,dPPYba,  88,dPPYba,   ,adPPYba, 8b,dPPYba,  
a8"     "" 88 88P'    "8a 88P'    "8a a8P_____88 88P'   "Y8  
8b         88 88       d8 88       88 8PP""""""" 88          
"8a,   ,aa 88 88b,   ,a8" 88       88 "8b,   ,aa 88          
 `"Ybbd8"' 88 88`YbbdP"'  88       88  `"Ybbd8"' 88          
              88                                             
              88           
"""
print(logo)

#TODO-4: Can you figure out a way to ask the user if they want to restart the cipher program?
#e.g. Type 'yes' if you want to go again. Otherwise type 'no'.
#If they type 'yes' then ask them for the direction/text/shift again and call the caesar() function again?
#Hint: Try creating a while loop that continues to execute the program if the user types 'yes'.
should_end = False
while not should_end:

  direction = input("Type 'encode' to encrypt, type 'decode' to decrypt:\n")
  text = input("Type your message:\n").lower()
  shift = int(input("Type the shift number:\n"))
  #TODO-2: What if the user enters a shift that is greater than the number of letters in the alphabet?
  #Try running the program and entering a shift number of 45.
  #Add some code so that the program continues to work even if the user enters a shift number greater than 26. 
  #Hint: Think about how you can use the modulus (%).
  shift = shift % 26

  caesar(start_text=text, shift_amount=shift, cipher_direction=direction)

  restart = input("Type 'yes' if you want to go again. Otherwise type 'no'.\n")
  if restart == "no":
    should_end = True
    print("Goodbye!")