[issue9421] configparser.ConfigParser's getint, getboolean and getfloat don't accept `vars`

[Fred L. Drake, Jr.]

Fred L. Drake, Jr. <fdrake at acm.org> added the comment:

The getters should all accept a `default` argument that's used when no value is found in the configuration.  If the default is given, that should be returned (without conversion), instead of raising an exception.

This can be included in the same patch.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue9421>
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