string_formatter 1.0.1 released
Anthon van der Neut
anthon at mnt.org
Fri Sep 11 16:51:22 EDT 2015
string_formatter is a backport of the 3.4.1+ string.Formatter class, to
2.7, 3.3 and 3.4.0. This allows the use of empty keys {} in its format
strings.
At the same time it solves an existing (at least until 3.5.0.rc3) bug in
string.Formatter, breaking with the use of nested empty keys.
Python 3.4.3:
>>> import string
>>> string.Formatter().format("|{:<{}} {}|", 'a', 3, 5)
'|a 3|'
In addition (that is how it all started) it provides TrailingFormatter
which allows a type specification "t" with a single character parameter.
That character will be added to the (stringified) value before applying
(left-aligned) formatting:
import string_formatter as string
fmt = string.TrailingFormatter()
d = dict(a=1, bc=2, xyz=18)
for key in sorted(d):
print(fmt.format("{:t{}<{}} {:>3}", key, ':', 15, d[key]))
giving:
a: 1
bc: 2
xyz: 18
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