Earlier quoted context omitted.
Reducing the cost of your project is a pretty good reason to choose something. Which template language would you choose for those other platforms? One of 200 half-baked templating languages, or something more complete like php? PHP has better documentation than all of those platforms, so that could be another reason. It has more advanced, popular, and featureful Content Management Systems than all of those platforms.
> "Half baked" Meh. jinja.pocoo.org > "better documentation" By what measure? docs.python.org is just as good (if not better.)
This is really useful when your standard library is an incredible cockup of str_pos vs strpos vs string_pos vs sposition vs StrLib::Position vs ($haystack, $needle) vs ($needle, $haystack) - it means you only need to spend a few seconds double-checking the docs every time you use a standard library function.
Sure, a library which was consistent and thus needed no lookups at all would be better, but if you abandon all hope of making sense of it and understand that you'll need to use the documentation several times per line of code, the convenience of the docs makes it not quite so painful.