[MERGE][Win32] explicit close of file in textfile

[Aaron Bentley]

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Andrew Bennetts wrote:
| I believe a better style is this:
|
|     f = open(path, 'rb')
|     try:
|         text_file(f)
|     finally:
|         f.close()
|
| Otherwise an exception raised during the "open(path, 'rb')" (perhaps a
| permission error, or even a KeyboardInterrupt) will try to execute
"f.close()"
| when f is undefined.  This will cause an unnecessary NameError, and
prevent the
| original exception from propagating.

I agree completely.  Dunno what I was thinking.

Aaron
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