[IronPython] __builtins__

[J. Merrill]

Is it a typo that it says "...builtin__'> is not enumerable" (vs builtins)?

Would a solution be to implement the enumerable mechanism (over the names of the attributes) for __builtins__ ?  That would not be hard to do (I don't think) and would be unlikely to cause much trouble.

At 10:10 AM 1/27/2007, Sanghyeon Seo wrote
>In CPython, __builtins__ is a module for the main script, but it is a
>dictionary for modules. This is quite confusing, and this behaviour is
>explicitly stated as an implementation detail. As far as I can tell,
>it is always a module in IronPython.
>
>http://docs.python.org/lib/module-builtin.html
>
>However, far too many existing CPython sources break beacuse of this
>on IronPython for my taste. The symptom is:
>
>TypeError: <type '__builtin__'> is not enumerable
>
>This is usually caused by well-intended codes as following:
>
>if 'sorted' not in __builtins__:
>    def sorted(seq):
>        seq = seq[:]
>        seq.sort()
>        return seq
>
>This lets one to keep compatibility with CPython versions before 2.4,
>while still using 2.4-introduced sorted() builtin.
>
>Here are some existing usages:
>http://www.google.com/codesearch?q=%22in+__builtins__%22


J. Merrill / Analytical Software Corp