[CentralOH] Files and context manager

[Mark Erbaugh]

> 
> A common idiom with older versions of Python is:
> 
> x = open(filename,'rb').read()
> 
> With context managers in 2.6+ you could say:
> 
> with open(filename,'rb') as f:
> 	x = f.read()
> 
> Is the later safer in that it explicitly will call close() whereas the former depends on the file destructor to close the file?
> 

I forgot the second half of my question.

Is a function like:

def getData(filename):
	with open(filename,'rb') as f:
             return f.read()


a good idea?
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