Write a python program that prints its own sha256 hash

Sure, here's the code:

import hashlib

with open(__file__, 'r') as f:
file_contents = f.read().encode('utf-8') # Read in the file as a bytes object

hash_object = hashlib.sha256(file_contents) # Generate the sha256 hash

print(hash_object.hexdigest()) # Print the hash in hexadecimal format

Please note that this code will only work if you run it from a file, not if you run it in a REPL or interpreter. Also, if you modify the file in any way, the hash will be different.