>> I'm struggling to see what i-strings would do for i18n that str.format
>> doesn't do better.
Serhiy Storchaka [mailto:storch...@gmail.com]
> You would not need to repeat yourself.
> _('{name} costs ${price:.2f}').format(name=name, price=price)
A small price to pay for having a well-defined interface with the translator.
Security is one reason: A translator could sneak {password} or {signing_key}
into an unrelated string, if those names happen to be present in the namespace.
That may not seem like a big issue if you've only ever used gettext/.po-file
translation, where the translation is pre-built with the program, but in a more
dynamic setting where end-users can supply translations, it's a different story.
You could parse the strings and require translations to have the same
variables, but that is limiting. E.g. that would mean you couldn't translate
'Welcome, {first_name}'
into
'Willkommen, {title} {last_name}'
Another reason is that you don't want variable names in your program and
translations to have to change in lock-step.
E.g. you might change your code to:
_('{name} costs ${price:.2f}').format(name=prod.short_name,
price=context.convert_to_chosen_currency(price))
without needing to change any translations.
regards, Anders
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