In Python, urlsafe_b64decode is a function that decodes a string encoded using URL-safe Base64. Base64 encoding is an encoding method that converts binary data into printable ASCII characters. It is often used to convert binary data into text format during network transmission or storage.
The urlsafe_b64decode function belongs to the base64 module in the Python standard library. What it does is decode a URL-safe Base64-encoded string into raw binary data.
Unlike standard Base64 encoding, URL-safe Base64 encoding uses some special characters to replace the + and / characters in standard encoding. Specifically, URL-safe Base64 encoding replaces + with - and / with _. This is done to avoid causing ambiguity or conflicts in the URL.
Here is a sample code that shows how to decode URL-safe Base64 encoding using the urlsafe_b64decode function:
import base64
encoded_string = "SGVsbG8gd29ybGQh"
decoded_data = base64.urlsafe_b64decode(encoded_string)
print(decoded_data)
In the example, we assign a URL-safe Base64-encoded string to the variable encoded_string. Then, use the urlsafe_b64decode function to decode the string and obtain the original binary data. Finally, we print out the decoded data.