[Python-Dev] DeprecationWarning: assignment shadows builtin (original) (raw)

Ralf W. Grosse-Kunstleve rwgk@cci.lbl.gov
Wed, 16 Jul 2003 12:12:34 -0700 (PDT)

Starting with Python 2.3b2 I am getting DeprecationWarnings:

Python 2.3b2 (#1, Jun 30 2003, 06:35:48) [GCC 3.2 20020903 (Red Hat Linux 8.0 3.2-7)] on linux2 Type "help", "copyright", "credits" or "license" for more information.

import stdvector main:1: DeprecationWarning: assignment shadows builtin dir(stdvector) ['doc', 'file', 'name', 'array_cast', 'boost_array_sum', 'cos', 'double', 'float', 'in_place_multiply', 'int', 'long', 'size_t']

std_vector is a Boost.Python extension module (http://www.boost.org/libs/python/doc/index.html). It provides Python bindings for C++ std::vector<> template instantiations, for example:

Python C++ std_vector.int std::vector std_vector.long std::vector std_vector.size_t std::vector std_vector.float std::vector std_vector.double std::vector

Example usage:

a = std_vector.float((1,2,3))

Does the DeprecationWarning mean that I cannot provide this intuitive interface anymore?

It seems to me that the names of builtin types are essentially made equivalent to reserved keywords. I.e. from the user's perspective 2.3b2 introduces an inflation of reserved keywords. I am asking myself if the anticipated (?) performance benefits justify this intrusive change.

Ralf