Is it possible to “hack” Python's print function?

Question

Note: This question is for informational purposes only. I am interested to see how deep into Python\'s internals it is possible to go with this.

Not very long ago, a

Answer 1

Let's combine this with frame introspection!

import sys

_print = print

def print(*args, **kw):
    frame = sys._getframe(1)
    _print(frame.f_code.co_name)
    _print(*args, **kw)

def greetly(name, greeting = "Hi")
    print(f"{greeting}, {name}!")

class Greeter:
    def __init__(self, greeting = "Hi"):
        self.greeting = greeting
    def greet(self, name):
        print(f"{self.greeting}, {name}!")

You'll find this trick prefaces every greeting with the calling function or method. This might be very useful for logging or debugging; especially as it lets you "hijack" print statements in third party code.