[issue18430] gzip, bz2, lzma: peek advances file position of existing file object

[Nick Bargnesi]

Nick Bargnesi added the comment:

That's an improvement.

Using wording similar to the constructor's:

Calling a GzipFile object’s peek() method does not advance its position, but the fileobj may be affected. The caller may wish to save the fileobj position prior to calling peek() and resetting it upon return.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue18430>
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