[New-bugs-announce] [issue18730] suffix parameter in NamedTemporaryFile silently fails when not prepending with a period

[Dan Loewenherz]

New submission from Dan Loewenherz:

Basically, when creating a NamedTemporaryFile, passing a value to the "suffix" parameter has no effect unless it's prepended with a period.

IMO, there are three options here...

1. Add a note in the documentation that this parameter only accepts period-prepended values (not ideal but better than the status quo).
2. Change the behavior to throw an exception when a non-period prepended value is provided (probably bad since it would break stuff).
3. Strip invalid values from this input and silently fail if the resulting string is of length 0 (might also break stuff).

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components: Library (Lib)
messages: 195097
nosy: dloewenherz
priority: normal
severity: normal
status: open
title: suffix parameter in NamedTemporaryFile silently fails when not prepending with a period
type: behavior
versions: Python 2.7

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue18730>
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