Bytecode change

bytecode.py

import uncompyle6
import types

def change_bytecode(code, sub=False):
    if not isinstance(code, types.CodeType):
        return code
    if sub:
        # 0 LOAD_CONST               1 (0)
        # 2 RETURN_VALUE
        co_code = b'd\x01S\x00'
        co_consts = (None, 42)
        co_lnotab = b''
    else:
        co_code = code.co_code
        co_consts = tuple([
            change_bytecode(x, sub=True) for x in code.co_consts
        ] + [42])
        co_lnotab = code.co_lnotab
        
    return types.CodeType(
        code.co_argcount, code.co_kwonlyargcount, code.co_nlocals,
        code.co_stacksize, code.co_flags, co_code, co_consts,
        code.co_names, code.co_varnames, code.co_filename,
        code.co_name, code.co_firstlineno, co_lnotab,
        code.co_freevars, code.co_cellvars
    )

expr='''
def resposta():
   print ('Alô Mundo')

def outra_resposta():
   return 0

print(resposta())
'''
code = compile(expr, '__main__', 'exec')

uncompyle6.deparse_code(3.6, change_bytecode(code))