On Dienstag 01 Februar 2011, Gerald Britton wrote:
> I'd like to know how (perhaps with the inspect module) I can
> tell if I am running in a context manager.
>>class f(object):
>> def __init__(self):
>> self.inContext = False
>> def __enter__(self):
>> self.inContext = True
>> return self
>> def __exit__(self,a,b,c):
>> self.inContext = False
>> return None
>> x = f()
>> print 'not within:', x.inContext
>> with f() as h:
>> print 'within:', h.inContext
yes, of course, but in this case I may not modify the class. try it with open:
x = open('somefile')
# return false since not in a context
with open('somefile') as x
# return true since in a context.
--
Wolfgang
--
Gerald Britton
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