We learned in chapter 4 that public keys are really points in the ECDSA curve, meaning they have an x and y value. The first byte 04 means "uncompressed" (as opposed to 02 and 03 like we learned in chapter 4). Remove that first byte and the remaining data are 32-byte x and y coordinates. Copy and paste again.
# Satoshi's public key, from the block 9 coinbase output scriptPubKey
pubkey = """0411db93e1dcdb8a016b49840f8c53bc1eb68a382e97b1482ecad7b148a6909a5cb2e0eaddfb84ccf9744464f82e160bfa9b8b64f9d4c03f999b8643f656b412a3"""