I have the following sample function:
def Run(self):
with self._resource() as r:
# a lot of code uses |r|
pass
# end of 'with' statement
# end of function body
I don't want to lose the visual space of the whole function body because of additional indent inside with
statement.
Also I don't want to call the _resource()
outside the class scope - it breaks encapsulation in some ways, ie this is not a good way:
with obj._resource() as r:
obj.Run(r)
Is there any pretty way to run the same code without losing visual space?
If you have only this function to deal with, it's pretty simple:
class Foo(object):
def Run(self):
with self._resource() as r:
return self._RunWithResource(r)
def _RunWithResource(self, r):
# ...
If you want to repeat the pattern, a decorator might help. More or less:
from functools import wraps
def with_resource(f):
@wraps
def wrapper(self, *a, **kw):
with self._resource() as r:
return f(self, r, *a, **kw)
return wrapper
class Foo(object):
@with_resource
def Run(self, r):
# ...
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