Problems with not having exceptions crash my script

[DeaD_EyE]

The problem is in the while-loop.

def split_url(url):
    pass


def validate_scheme(url):
    pass


while True:
    url = 'foo'
    split = split_url(url)
    split_url = validate_scheme(split)

It doesn't matter what validate_scheme returns.
You're assigning the name split_url, which has been assigned before to the function.
In the while loop you call this function again.

---

Here my extension to your try_wrapper.
It's one level deeper and allows to set a return_value and is using logging.

import logging
import functools

logger = logging.getLogger(__name__)
logger.setLevel(logging.INFO)

def try_wrapper(*, logger=None, traceback=False, retval=None):
    def func_wrapper(func):
        @functools.wraps(func)
        def inner(*args, **kwargs):
            try:
                result = func(*args, **kwargs)
                return result
            except Exception as e:
                if logger and not traceback:
                    logger.debug(e)
                elif logger and traceback:
                    logger.exception(traceback)
                return retval
            else:
                return result
        return inner
    return func_wrapper


@try_wrapper()
def foo():
    return 1/0


@try_wrapper(logger=logger)
def foo_with_logger():
    return 1/0


@try_wrapper(logger=logger, retval=42)
def foo_with_logger_and_retval():
    return 1/0

print('Foo call')
ret = foo()
print('Retval:', ret, 'Type:', type(ret))
print()
print('foo_with_logger')
ret = foo_with_logger()
print('Retval:', ret, 'Type:', type(ret))
print()
print('foo_with_logger in logging level debug')
logger.setLevel(logging.DEBUG)
ret = foo_with_logger()
print('Retval:', ret, 'Type:', type(ret))
print()
print('foo_with_logger_and_retval 42')
ret = foo_with_logger_and_retval()
print('Retval:', ret, 'Type:', type(ret))

Maybe you can also log tracebacks if you want. Set traceback=True