On 3/16/2016 3:08 PM, Chris Angelico wrote:
On Thu, Mar 17, 2016 at 5:53 AM, Ben Finney <ben+pyt...@benfinney.id.au> wrote:
For example a hint that "0" does work for the given argument.
I suggest: “zero-padding only allowed for numeric types, not 'str'”.
That's very slightly misleading too; zero padding is perfectly legal
as long as you force the alignment:
"{:>05}".format("1")
'00001'
"{:>05}".format("2")
'00002'
"{:>05}".format("-3")
'000-3'
Though as the last example shows, this doesn't properly handle signs
("-0003" would be preferred).
Sign-aware 0 padding is only for numeric types. '-3' is a string, no
different from 'ab'.
--
Terry Jan Reedy
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