Favorite non-python language trick?

[Edvard Majakari]

Thomas Heller <theller at python.net> writes:

> I don't see what's wrong with this code, and if one wanted, one could
> also implement a decorator which calls warnings.warn when the function
> is called:
>
> def c_buffer(init, size=None):
>     "deprecated, use create_string_buffer instead"
>     import warnings
>     warnings.warn("c_buffer is deprecated, use create_string_buffer instead",
>                   DeprecationWarning, stacklevel=2)
>     return create_string_buffer(init, size)

Well, nothing's wrong there, and the same could be done with Java
before. However, having a consistent deprecated string everywhere allows
easier eg. automatic finding of such methods from documentation. 

Decorators also help here, but that requires version 2.3 or newer (which
usually isn't a problem, but can be)

Hey! I hadn't realized category parameter nor stacklevel in warnings module
(just used a few times, never read the doc because I didn't need to). Neat,
thanks.

-- 
# Edvard Majakari		Software Engineer
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