Hook every sym named something

def pre_hook_func(func, hook):
    @functools.wraps(func)
    def run(*args, **kwargs):
        hook(*args, **kwargs)
        return func(*args, **kwargs)
    return run

def prehook_sym_func_creator(sym_name, hook):
    def func(mod, callables):
      if sym_name in callables.keys():
        setattr(mod, sym_name, pre_hook_func(getattr(mod, sym_name), hook))
    return func

def recurse_mod(mod, apply_func, checked=None):
    if checked == None:
        checked = []
    submodules = [cls for _, cls in mod.__dict__.items() if isinstance(cls, mod.__class__) and cls.__name__ not in checked]
    callables = dict([(name, cls) for name, cls in mod.__dict__.items() if callable(cls)])

    apply_func(mod, callables)

    checked += [sm.__name__ for sm in submodules]

    for sm in submodules:
        if mod == sm:
            continue
        recurse_mod(sm, apply_func, checked)

def some_funk_new_func():
    print("caca boudin")

import module_to_modify
recurse_mod(module_to_modify, prehook_sym_func_creator("sym_to_modify", some_funk_new_func))