There are two reasons for this patch.

First, in the fnmatch.py, __all__ doesn't include "filter", 
so if you tried to use fnmatch.filter like this,

>>> from fnmatch import *
>>> filter

built-in function, filter, is called instead of fnmatch.filter.

>>> filter
<built-in function filter>

Second, "translate" is just a helper function used by 
other functions in the fnmatch module, 
and that's why it's not documented in the Python library 
reference.

I think "translate" should be removed from 
fnmatch.__all__.

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While I agree with that, I feel that it is too late for 2.3:
this is an interface change. So postponing it to 2.4.

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> this is an interface change. 
If you're reluctant to remove "translate", that's OK.

I just propose to add "filter" to __all__.
That won't do any harm.

> I feel that it is too late for 2.3:
I don't feel it's too late for 2.3.
There's at least one month left before the final release of 2.3.

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Even in Py2.4, I prefer that "translate" not be removed -- it 
has already been exposed and there is not real benefit to 
pulling it back -- also, it may have some use as a stand-
alone function.

I would not mind if "filter" were added to __all__ for Py2.3 -- 
IMO, that part is a bug fix.

Martin, is this okay with you?

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Raymond: I agree. Adding filter is a bugfix; removing
translate should not happen at all. Please make it happen
before 2.3.

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Done.
See Lib/fnmatch.py 1.14

George, thanks for submitting patch.