New submission from Petr:

When using configparser read method, the file(s) remains opened and cannot be 
closed, causing ResourceWarning: unclosed file.

For example in the following code:

config = configparser.ConfigParser()
config.read(cfg_fn)
...

the file cfg_fn remains opened and is only closed upon destruction of the 
underlying file object. At some point in history the method read used to close 
the file, but this has been changed for some reason.

----------
components: Library (Lib)
messages: 280209
nosy: PetrPy
priority: normal
severity: normal
status: open
title: configparser does not close files in read
type: resource usage
versions: Python 3.5

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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue28632>
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