Expanding templates#
The Python standard library defines string.Template
strings, which
are the implementation of PEP 292 simple string templates. Substitution
placeholders are identified by a leading $
-sign [1]. A substitution
dictionary names the keys and values that should be substituted into the
template, replacing the placeholders. This module defines the
expand()
function which takes the translated string and a substitution
dictionary, and returns the resulting string.
Normally though, you shouldn’t have to call this function yourself.
>>> key_1 = 'key_1'
>>> key_2 = 'key_2'
>>> from flufl.i18n import expand
>>> print(expand(
... '$key_2 is different than $key_1', {
... key_1: 'the first key',
... key_2: 'the second key',
... }))
the second key is different than the first key