Issue 6857: float().format() default alignment (original) (raw)

This issue has been migrated to GitHub: https://github.com/python/cpython/issues/51106

classification

process

Created on 2009-09-07 15:46 by skrah, last changed 2022-04-11 14:56 by admin. This issue is now closed.

Messages (6)
msg92370 - (view)	Author: Stefan Krah (skrah) *	Date: 2009-09-07 15:46
format(float("0.12345"), "7.0") -> ' 0.1' The default alignment should be 'left-aligned'.
msg92378 - (view)	Author: Mark Dickinson (mark.dickinson) *	Date: 2009-09-07 17:42
Hmm. PEP 3101 does indeed say that left-aligned is the default, but it's a bit of a strange default for numeric types. I'd expect integers (at least) to be right-aligned by default. I'd be inclined to say that the current float formatting is correct, and that it's the Decimal formatting that's wrong.
msg92379 - (view)	Author: Eric V. Smith (eric.smith) *	Date: 2009-09-07 17:52
That is interesting. I'd agree that it's a bug in the PEP. Note that %-formatting right aligns floats by default: >>> '%7.0g' % 0.12345 ' 0.1' I'll raise the issue on python-dev. Eric.
msg92431 - (view)	Author: Mark Dickinson (mark.dickinson) *	Date: 2009-09-08 20:25
I've changed the default alignment for Decimal instances to right-aligned (so that it agrees with floats and ints) in r74723 (trunk), r74725 (py3k), as agreed in the python-dev thread starting at: http://mail.python.org/pipermail/python-dev/2009-September/091640.html
msg92432 - (view)	Author: Eric V. Smith (eric.smith) *	Date: 2009-09-08 20:31
Thanks for the decimal work, Mark. I notice that complex is also left aligned, by default. I'll take a look at that.
msg99817 - (view)	Author: Eric V. Smith (eric.smith) *	Date: 2010-02-22 19:30
With the fixes for complex in issue 7988, I believe this issue is completed.