Sometimes, we want to create a Caesar Cipher function in Python.
In this article, we’ll look at how to create a Caesar Cipher function in Python.
How to create a Caesar Cipher function in Python?
To create a Caesar Cipher function in Python, we can use the string slicing feature.
For instance, we write
def caesar(plaintext, shift):
alphabet = string.ascii_lowercase
shifted_alphabet = alphabet[shift:] + alphabet[:shift]
table = string.maketrans(alphabet, shifted_alphabet)
return plaintext.translate(table)
to define the caesar function that takes the plaintext string and the number of positions to shift the characters in plaintext.
In it, we get the lowercase alpgabets in a string with
alphabet = string.ascii_lowercase
Then we shift the alphabet with
shifted_alphabet = alphabet[shift:] + alphabet[:shift]
Then we call maketrans to create a dict that maps the letters in alphabet to the letters in shifted_alphabet.
And then we call plaintext.translate with table to return a new string that maps the letters in the keys of table to the corresponding letter value.
Conclusion
To create a Caesar Cipher function in Python, we can use the string slicing feature.
