example.py

import builtins
import functools
import json

orig_print = builtins.print

def indent4(f):
    @functools.wraps(f)
    def wrapped(*args, **kwargs):
        return f(json.dumps(*args, **kwargs, indent=4))
    return wrapped

@indent4
def print(*args, **kwargs):
    return orig_print(*args, **kwargs)