urlsafe_base64_encode_decode_without_padding.py

1import base64
2
3# The data to be encoded
4data = b"Python is awesome!"
5
6# Standard Base64 uses '=' for padding to reach a multiple of 4 characters
7# URL-safe Base64 with no padding is commonly used in JWTs and web headers
8encoded = base64.urlsafe_b64encode(data).rstrip(b"=")
9
10print(f"Encoded: {encoded.decode('utf-8')}")
11
12# To decode unpadded Base64, you must add the padding back 
13# or use a method that handles missing padding
14missing_padding = len(encoded) % 4
15if missing_padding:
16    encoded += b'=' * (4 - missing_padding)
17
18decoded = base64.urlsafe_b64decode(encoded)
19print(f"Decoded: {decoded.decode('utf-8')}")