[PYTHON MATRIX-SIG] take() from python sequence

[Emmanuel Viennet]

 The take() method works on arbitrary sequence object, 
but NOT on user defined class instances acting like sequences
(ie defining __getitem__() and __len__() methods).

Why this restriction ?

Example:

class SillySeq:
	def __getitem__(self, i):
		return i
	def __len__(self):
		return 100

myseq = SillySeq()
index = arange(10)

take( myseq, index )

=> ValueError: invalid input sequence

P.S.: the restriction is enforced by arrayobject.c/discover_depth(),
     but Assign_Array() seems to call __getitem__(), so the
     restriction does not seems necessary.

-- 
Emmanuel Viennet: <viennet@ura1507.univ-paris13.fr>
LIPN - Institut Galilee - Universite Paris-Nord       
93430 Villetaneuse -  France

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