context_manager to decorator

decontext.py

import functools
from contextlib import contextmanager

def context_to_decorator(context_manager):
    def decorator_maker(*args_context, **kwargs_context):
        def decorator(func):
            @functools.wraps(func)
            def wrapped(*args, **kwargs):
                with context_manager(*args_context, **kwargs_context):
                    ret_val = func(*args, **kwargs)
                return ret_val
            return wrapped
        return decorator
    return decorator_maker

@contextmanager
def thisiscontext(before, after):
    print('Before: %s' % before)
    try:
        yield
    finally:
        print('After: %s' % after)


thisisdecorator = context_to_decorator(thisiscontext)


# -----------------------------------------------

def test_context_manager():
    with thisiscontext('I preceed everything', 'Im at the end of anything'):
        print 'manager'

@thisisdecorator('I preceed everything', 'Im at the end of anything')
def test_decorator():
    print 'decorator'


test_context_manager()
test_decorator()

# Before: I preceed everything
# manager
# After: Im at the end of anything

# Before: I preceed everything
# decorator
# After: Im at the end of anything