1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
|
From: Yaroslav Halchenko <debian@onerussian.com>
Subject: [PATCH] ENH do not fail the test reslying on numpy div 0 warnings if
those are not spit out by numpy in general
$> python -c 'import numpy as np; from platform import platform; print np.__version__, platform(); 1.0 / np.array([0.])'
1.6.2 Linux-3.1.0-1-amd64-x86_64-with-debian-wheezy-sid
-c:1: RuntimeWarning: divide by zero encountered in divide
$> python -c 'import numpy as np; from platform import platform; print np.__version__, platform(); 1.0 / np.array([0.])'
1.4.1 Linux-2.6.32-5-amd64-x86_64-with-debian-6.0.4
(sid)yoh@abel:~$ python -c 'import numpy as np; from platform import platform; print np.__version__, platform(); 1.0 / np.array([0.])'
1.6.2 Linux-2.6.32-armv5tel-with-debian-wheezy-sid
Origin: Debian
Bug: https://github.com/scikit-learn/scikit-learn/pull/928
Applied-Upstream: https://github.com/scikit-learn/scikit-learn/commit/f0961c22762d008a71379e39c3e9707bdd88652d
Last-Update: 2012-07-04
---
sklearn/feature_extraction/tests/test_text.py | 8 ++++++++
1 file changed, 8 insertions(+)
--- a/sklearn/feature_extraction/tests/test_text.py
+++ b/sklearn/feature_extraction/tests/test_text.py
@@ -14,6 +14,7 @@ from sklearn.pipeline import Pipeline
from sklearn.svm import LinearSVC
import numpy as np
+from nose import SkipTest
from nose.tools import assert_equal, assert_equals, \
assert_false, assert_not_equal, assert_true
from numpy.testing import assert_array_almost_equal
@@ -260,8 +261,15 @@ def test_tfidf_no_smoothing():
[1, 0, 0]]
tr = TfidfTransformer(smooth_idf=False, norm='l2')
+ # First we need to verify that numpy here provides div 0 warnings
+ with warnings.catch_warnings(record=True) as w:
+ _ = 1. / np.array([0.])
+ numpy_provides_div0_warning = len(w) == 1
+
with warnings.catch_warnings(record=True) as w:
tfidf = tr.fit_transform(X).toarray()
+ if not numpy_provides_div0_warning:
+ raise SkipTest("Numpy does not provide div 0 warnings.")
assert_equal(len(w), 1)
assert_true("divide by zero encountered in divide" in w[0].message)
|
