8000 ENH: Add shape to *_like() array creation by pentschev · Pull Request #13046 · numpy/numpy · GitHub
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ENH: Add shape to *_like() array creation #13046

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Merged
merged 24 commits into from
Apr 25, 2019
Merged

ENH: Add shape to *_like() array creation #13046

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f885c08
ENH: Added shape argument to *_like() array creation functions
pentschev Feb 26, 2019
5ad61b6
ENH: C backend adjustments for shape argument on *_like()
pentschev Feb 26, 2019
fd3e270
TST: Added test for shape argument in *_like() functions
pentschev Feb 26, 2019
b7202a7
ENH: Added PyArray_NewLikeArrayWithShape()
pentschev Feb 26, 2019
013cbce
BUG: Fix for PyArray_NewLikeArrayWithShape strides and ndim == 0
pentschev Feb 27, 2019
807f512
REL: Updates for C-API, version 1.17.x
pentschev Feb 27, 2019
95bbfd0
Revert "REL: Updates for C-API, version 1.17.x"
pentschev Mar 13, 2019
43b9828
Revert exposing PyArray_NewLikeArrayWithShape on C-API
pentschev Mar 13, 2019
fa7fd75
DOC: fix versionadded for *_like() shape argument
pentschev Mar 13, 2019
d57e6d3
STY: add missing spaces in array initializers
pentschev Mar 13, 2019
f1b3e91
ENH: empty_like raises ValueError
pentschev Mar 16, 2019
d24ac10
TST: test for exception of *_like() functions
pentschev Mar 16, 2019 10000
ec26417
DOC: release note for shape argument in *_like() functions
pentschev Mar 16, 2019
40e7e9e
DOC: fix *_like() documentation on raises
pentschev Mar 17, 2019
928952d
BUG: *_like() raises for non-C/F-layout arrays
pentschev Mar 17, 2019
e394356
TST: change *_like() shapes to prevent NPY_RELAXED_STRIDE_DEBUG=1 fai…
pentschev Mar 17, 2019
d938fb9
Move empty_like() exception to C implementation
pentschev Mar 19, 2019
99a55e0
Merge branch 'master' into add-shape-to-like-array-creation
pentschev Mar 28, 2019
c087801
Update *_like() ValueError documentation
pentschev Apr 4, 2019
db7614b
Merge remote-tracking branch 'upstream/master' into add-shape-to-like…
pentschev Apr 5, 2019
669ea71
Rearrange stride computation for *_like() if new shape and order='K'
pentschev Apr 10, 2019
f53afbe
Change handling of order= for *_like()
pentschev Apr 19, 2019
c3ac08e
Merge branch 'master' into add-shape-to-like-array-creation
pentschev Apr 19, 2019
695b836
Fix *_like() tests
pentschev Apr 19, 2019
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ENH: empty_like raises ValueError 
This occurs when shape is defined and number of dimensions match but
order is 'K'.
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@pentschev
pentschev committed Mar 16, 2019
commit f1b3e91c7578abad100dbbd9b32d2e367d8bb60d
8 changes: 8 additions & 0 deletions numpy/core/multiarray.py
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Original file line number Diff line number Diff line change
Expand Up @@ -108,6 +108,11 @@ def empty_like(prototype, dtype=None, order=None, subok=None, shape=None):
Array of uninitialized (arbitrary) data with the same
shape and type as `prototype`.

Raises
------
ValueError
If len(ndim) different from a.ndim and order is 'K'

See Also
--------
ones_like : Return an array of ones with shape and type of input.
Expand All @@ -133,6 +138,9 @@ def empty_like(prototype, dtype=None, order=None, subok=None, shape=None):
[ 4.38791518e-305, -2.00000715e+000, 4.17269252e-309]])

"""
if (shape is not None and prototype.ndim != len(shape) and
order not in 'CFA'):
raise ValueError("mismatching ndim can not keep order")
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@shoyer: Is this the place for this type of check?

return (prototype,)


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15 changes: 15 additions & 0 deletions numpy/core/numeric.py
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Expand Up @@ -145,6 +145,11 @@ def zeros_like(a, dtype=None, order='K', subok=True, shape=None):
out : ndarray
Array of zeros with the same shape and type as `a`.

Raises
------
ValueError
If len(ndim) different from a.ndim and order is 'K'

See Also
--------
empty_like : Return an empty array with shape and type of input.
Expand Down Expand Up @@ -269,6 +274,11 @@ def ones_like(a, dtype=None, order='K', subok=True, shape=None):
out : ndarray
Array of ones with the same shape and type as `a`.

Raises
------
ValueError
If len(ndim) different from a.ndim and order is 'K'

See Also
--------
empty_like : Return an empty array with shape and type of input.
Expand Down Expand Up @@ -383,6 +393,11 @@ def full_like(a, fill_value, dtype=None, order='K', subok=True, shape=None):
out : ndarray
Array of `fill_value` with the same shape and type as `a`.

Raises
------
ValueError
If len(ndim) different from a.ndim and order is 'K'

See Also
--------
empty_like : Return an empty array with shape and type of input.
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