[Python-Dev] PEP for adding an sq_index slot so that any object, a or b, can be used in X[a:b] notation (original) (raw)

Jim Jewett jimjjewett at gmail.com
Mon Feb 13 22:16:17 CET 2006


Travis wrote:

The patch adds a new API function int PyObjectAsIndex(obj)

How did you decide between int and long?

Why not ssize_t?

Also, if index is being added as a builtin, should the failure result be changed? I'm thinking that this may become a replacement for isinstance(val, (int, long)). If so, it might be nice not to raise errors, or at least to raise a more specific subclass. (Catching a TypeError and then checking the message string ... does not seem clean.)

-jJ



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