Build a Caesar Cipher - Step 19

Python
1

Tell us what’s happening:

The program tells me, there is an error. But I tried it in PyCharm and it works. What is wrong?

def caesar(text, shift):
if not isinstance(shift, int):
return ‘Shift must be an integer value.’
if shift <= 1:
return ‘Shift must be a positive integer.’

Your code so far


# User Editable Region

def caesar(text, shift):
    if not isinstance(shift, int):
        return 'Shift must be an integer value.'
        
    if shift <= 1:
        return 'Shift must be a positive integer.'

# User Editable Region

    alphabet = 'abcdefghijklmnopqrstuvwxyz'
    shifted_alphabet = alphabet[shift:] + alphabet[:shift]
    translation_table = str.maketrans(alphabet + alphabet.upper(), shifted_alphabet + shifted_alphabet.upper())
    return text.translate(translation_table)


encrypted_text = caesar('freeCodeCamp', 3)
print(encrypted_text)

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/140.0.0.0 Safari/537.36 Edg/140.0.0.0

Challenge Information:

Build a Caesar Cipher - Step 19

2

A negative or null shift should not be accepted

so, -1 or 0 are not accepted, right? Any positive number is ok

checks if shift is less than 1

if shift <= 1:

How does this work for -1, 0 or 1? Is any positive value ok?

3

if shift <= 1:

just remove the “=” sign from the code