Updated the documentation for patterns() to note Python's 255 argument limit.

...where ``optional dictionary`` and ``optional name`` are optional. (See

`Passing extra options to view functions`_ below.)

.. note::

    Since `patterns()` is a function call, it accepts a maximum of 255

    arguments (URL patterns, in this case). This is a limit for all Python

    function calls. This will rarely be  problem in practice, since you'll

    typically structure your URL patterns modularly by using `include()`

    sections. However, on the off-chance you do hit the 255-argument limit,

    realise that `patterns()` returns a Python list, so you can split up the

    construction of the list.

    ::

        urlpatterns = patterns('',

            ...

            )

        urlpatterns += patterns('',

            ...

            )

    Python lists have unlimited size, so there's no limit to how many URL

    patterns you can construct; merely that you may only create 254 at a time

    (the 255-th argument is the initial prefix argument).

url

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