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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def aes_pad(s, block_size=32, padding='{'):
 """ Adds padding to get the correct block sizes for AES encryption @s: #str being AES encrypted or decrypted @block_size: the AES block size @padding: character to pad with -> padded #str .. from vital.security import aes_pad aes_pad("swing") # -> 'swing{{{{{{{{{{{{{{{{{{{{{{{{{{{' .. """

    return s + (block_size - len(s) % block_size) * padding