speaklater Implements a lazy string for python useful for use with gettext
Download

speaklater Ranking & Summary

speaklater Tags

Python library Python string gettext lazy string

speaklater Description

Implements a lazy string for python useful for use with gettext speaklater is a Python module that provides lazy strings for translations. Basically you get an object that appears to be a string but changes the value every time the value is evaluated based on a callable you provide.For example you can have a global lazy_gettext function that returns a lazy string with the value of the current set language.Example:>>> from speaklater import make_lazy_string>>> sval = u'Hello World'>>> string = make_lazy_string(lambda: sval)This lazy string will evaluate to the value of the sval variable.>>> stringlu'Hello World'>>> unicode(string)u'Hello World'>>> string.upper()u'HELLO WORLD'If you change the value, the lazy string will change as well:>>> sval = u'Hallo Welt'>>> string.upper()u'HALLO WELT'This is especially handy when combined with a thread local and gettext translations or dicts of translatable strings:>>> from speaklater import make_lazy_gettext>>> from threading import local>>> l = local()>>> l.translations = {u'Yes': 'Ja'}>>> lazy_gettext = make_lazy_gettext(lambda: l.translations.get)>>> yes = lazy_gettext(u'Yes')>>> print yesJa>>> l.translations = u'Si'>>> print yesSiLazy strings are no real strings so if you pass this sort of string to a function that performs an instance check, it will fail. In that case you have to explicitly convert it with unicode and/or string depending on what string type the lazy string encapsulates.To check if a string is lazy, you can use the is_lazy_string function:>>> from speaklater import is_lazy_string>>> is_lazy_string(u'yes')False>>> is_lazy_string(yes)True Requirements: · Python

speaklater Related Software