Human: execute a code after exiting program. Assistant: 
Here is a Python program to execute a code after exiting the program

import re

def _execute_code(code):
    """
    Execute a code after exiting program.
    """
    print(("Executing code: ", code))
    exec(code)

# Enter the code
code = "print('hello world')"

# Calling the function
print((_execute_code(code)))

#Example Output
# ('Executing code: ', "print('hello world')")
# hello world
# None

#Remember to inspect code for bugs.