[Python-Dev] PySequence_Check but no __len__
tjreedy at udel.edu
Fri Jun 22 15:07:32 EDT 2018
On 6/22/2018 7:17 AM, Christian Tismer wrote:
> My problem is to find out how to deal with a class which has
> __getitem__ but no __len__.
> The documentation suggests that the length of a sequence can always
> be obtained by len().
It says that plainly: "The built-in function len() returns the number of
items of a sequence. "
says that a Sequence has both __getitem__ and __len__.
I am surprised that a C-API function calls something a 'sequence'
without it having __len__.
Terry Jan Reedy
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