8000 1.10 regression: partition errors out on empty input · Issue #6530 · numpy/numpy · GitHub
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1.10 regression: partition errors out on empty input #6530
@njsmith

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@njsmith

maintenance/1.9.x:

In [8]: ap = np.array([0, 2, 4, 6, 8, 10])

# Passing an empty 'k' array to partition is a no-op:
In [9]: ap.partition(np.array([], dtype=np.int64))

In [10]: ap
Out[10]: array([ 0,  2,  4,  6,  8, 10])

1.10.1:

In [2]: ap = np.array([0, 2, 4, 6, 8, 10])

In [3]: ap.partition(np.array([], dtype=np.int64))
---------------------------------------------------------------------------
MemoryError                               Traceback (most recent call last)
<ipython-input-3-c708b3f943a6> in <module>()
----> 1 ap.partition(np.array([], dtype=np.int64))

MemoryError: 

Noticed this because it's breaking some tests in patsy.

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