Managers

import sys
import traceback
class ExceptionInterceptor:
    def __init__(self, *exceptions):
        self.exceptions = exceptions

    def __enter__(self):
        pass

    def __exit__(self, exc_type, exc_value, traceback):
        if exc_type in self.exceptions:
            return True
        else:
            return False



class Dumper:
    def __init__(self, stream):
        self.stream = stream

    def __enter__(self):
        return self

    def __exit__(self, exc_type, exc_val, exc_tb):
        if exc_type is not None:
            self.stream.write(f"{exc_val}\\n")
            self.stream.write(''.join(traceback.format_tb(exc_tb)))
class retyper:
    def __init__(self, type_from, type_to):
        self.type_from = type_from
        self.type_to = type_to

    def __enter__(self):
        pass

    def __exit__(self, exc_type, exc_value, traceback):
        if exc_type == self.type_from:
            raise self.type_to(*exc_value.args) from exc_value
def foo():
    i = 1 / 0


with Dumper(sys.stderr):
    foo()