sem6_4

from contextlib import contextmanager
import sys

@contextmanager
def supresser(*args):
    try:
        yield
    except Exception as exc:
        if(type(exc) in args):
            pass
        else:
            raise exc

@contextmanager
def retyper(type_from, type_to):
    try:
        yield
    except Exception as exc:
        if(type(exc) == type_from):
            new_exc = type_to(*exc.args)
            new_exc.__traceback__ = exc.__traceback__
            raise new_exc
        else:
            raise exc

@contextmanager
def dumper(stream):
    try:
        yield
    except Exception as exc:
        print_str = type(exc).__name__ + ': ' + str(exc) + '\n'
        stream.write(print_str)
        raise exc