numpy/numpy — pull request #5340 by certik (2014-12-02 19:11:08+00:00)
Title: ENH: Make fromiter() accept iterators of sequences

Tests were added.

Fixes #4791.

The example from http://mail.scipy.org/pipermail/numpy-discussion/2006-November/024747.html now works:
```
>>> from numpy import fromiter
>>> fromiter(([x, x // 2, x+5] for x in range(1000)), dtype=int)
array([[ 0, 0, 5],
[ 1, 0, 6],
[ 2, 1, 7],
...,
[ 997, 498, 1002],
[ 998, 499, 1003],
[ 999, 499, 1004]])
>>> _.shape
(1000, 3)
```

TODO:
* [ ] Go very carefully over the whole patch and make sure there are no memory leaks