How to perform error handling for 200 functions?

Question

Following is a sample function

def temp(data):
    a = sample_function_1(data)
    a = a[0][0]
    b = sample_function_2(data,'no',0,30)
    b = b[-1]
    c = sample_function_3(data, 'thank', 0, None, 15, 5)
    c = c[-2]
    print(a, b, c)
    return a, b, c

Error handling is done for sample_function_1, sample_function_2, and sample_function_3 . So the values returned by these functions cause no problem but the calculations done on the variables a, b, c can throw errors.

There are more than 200 functions like this and I need to manage the errors effectively. I know that try, catch, except is an option but are there any approaches that can be taken to solve this problem.

Answer 1

With 200 functions to change everything is going to be some hard work but you could try to use a decorator, you will only be able to intercept one error per function but it may be a good compromise for your case.

def exception_logger(func):
    wrapper(*args, **kwargs):
        try:
            return func(*args, **kwargs)
        except IndexError:
           ...doSomething...
           raise
    return wrapper

@exception_logger
def temp(data):
   ...doSomething...