Alternative to contextlib.nested with variable number of context managers

Question

We have code that invokes a variable number of context managers depending on runtime parameters:

from contextlib import nested, contextmanager

@contextmanag         


        

Answer 1

It seems that you are supposed to use the with statement with multiple context manager instances.

from https://pymotw.com/2/contextlib/:

In Python 2.7 and later, nested() is deprecated because the with statement supports nesting directly.

import contextlib

@contextlib.contextmanager
def make_context(name):
    print 'entering:', name
    yield name
    print 'exiting :', name

with make_context('A') as A, make_context('B') as B, make_context('C') as C:
    print 'inside with statement:', A, B, C