szha closed pull request #9645: Fix DataBatch.__str__ for cases where we don't
have labels.
URL: https://github.com/apache/incubator-mxnet/pull/9645
This is a PR merged from a forked repository.
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diff --git a/python/mxnet/io.py b/python/mxnet/io.py
index b07f7c1bea..201414e8f6 100644
--- a/python/mxnet/io.py
+++ b/python/mxnet/io.py
@@ -168,7 +168,10 @@ def __init__(self, data, label=None, pad=None, index=None,
def __str__(self):
data_shapes = [d.shape for d in self.data]
- label_shapes = [l.shape for l in self.label]
+ if self.label:
+ label_shapes = [l.shape for l in self.label]
+ else:
+ label_shapes = None
return "{}: data shapes: {} label shapes: {}".format(
self.__class__.__name__,
data_shapes,
diff --git a/tests/python/unittest/test_io.py b/tests/python/unittest/test_io.py
index e8aba38b82..58ca1d74fb 100644
--- a/tests/python/unittest/test_io.py
+++ b/tests/python/unittest/test_io.py
@@ -252,6 +252,17 @@ def check_libSVMIter_news_data():
check_libSVMIter_synthetic()
check_libSVMIter_news_data()
+
+def test_DataBatch():
+ from nose.tools import ok_
+ from mxnet.io import DataBatch
+ import re
+ batch = DataBatch(data=[mx.nd.ones((2,3))])
+ ok_(re.match('DataBatch: data shapes: \[\(2L?, 3L?\)\] label shapes:
None', str(batch)))
+ batch = DataBatch(data=[mx.nd.ones((2,3)), mx.nd.ones((7,8))],
label=[mx.nd.ones((4,5))])
+ ok_(re.match('DataBatch: data shapes: \[\(2L?, 3L?\), \(7L?, 8L?\)\] label
shapes: \[\(4L?, 5L?\)\]', str(batch)))
+
+
@unittest.skip("test fails intermittently. temporarily disabled till it gets
fixed. tracked at https://github.com/apache/incubator-mxnet/issues/7826";)
def test_CSVIter():
def check_CSVIter_synthetic():
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