useful python decorators

decorators.py

from time import time
from typing import Callable

def catch_exc_decor(exc_val):
    def inner_decor(func: [Callable]):
        def inner(*args, **kwargs):
            try:
                return func(*args, **kwargs)
            except Exception as ex:
                print(f"[X] Caught {ex} in {func.__name__}. Will return ")
                return exc_val
        return inner

    return inner_decor

def timer_func(func):
    # This function shows the execution time of
    # the function object passed
    def wrap_func(*args, **kwargs):
        t1 = time()
        result = func(*args, **kwargs)
        t2 = time()
        print(f'Function {func.__name__!r} executed in {(t2 - t1):.4f}s')
        return result

    return wrap_func


 # usage
@timer_func
@catch_exc_decor(exc_val = "Message when error is thrown")
def foo() -> str:
  return "no error"

@timer_func
@catch_exc_decor(exc_val = "Message when error is thrown")
def foo2() -> str:
    raise Exception("error")