[New-bugs-announce] [issue13573] csv.writer uses str() for floats instead of repr()

[Raymond Hettinger]

New submission from Raymond Hettinger <raymond.hettinger at gmail.com>:

The csv.writer needs a special case for floats to print them to full precision.  See http://stackoverflow.com/a/8455313/1001643

In Py2.7, the csv.writer converts floats to strings using str().  This will store 1323494016.8556759 as '1323494016.86' and unnecessarily throw away precision.

In Py3.2, this isn't a problem because float.__str__ now returns full precision, the same a float.__repr__.

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assignee: rhettinger
messages: 149179
nosy: rhettinger
priority: normal
severity: normal
status: open
title: csv.writer uses str() for floats instead of repr()
type: behavior
versions: Python 2.7

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue13573>
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