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https://issues.apache.org/jira/browse/ARROW-2240?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16384200#comment-16384200
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ASF GitHub Bot commented on ARROW-2240:
---------------------------------------
wesm commented on a change in pull request #1686: ARROW-2240: [Python] Array
initialization with leading numpy nan fails with exception
URL: https://github.com/apache/arrow/pull/1686#discussion_r171970987
##########
File path: cpp/src/arrow/python/python-test.cc
##########
@@ -367,5 +367,20 @@ TEST_F(DecimalTest, UpdateWithNaN) {
ASSERT_EQ(std::numeric_limits<int32_t>::min(), metadata.scale());
}
+TEST(PythonTest, ConstructStringArrayWithLeadingZeros) {
+ PyAcquireGIL lock;
+
+ OwnedRef list_ref(PyList_New(2));
+ PyObject* list = list_ref.obj();
+ std::string str("str");
+
+ ASSERT_EQ(0, PyList_SetItem(list, 0, PyFloat_FromDouble(NAN)));
+ ASSERT_EQ(0, PyList_SetItem(list, 1, PyUnicode_FromString(str.c_str())));
+
+ std::shared_ptr<Array> out;
+ auto pool = default_memory_pool();
+ ASSERT_OK(ConvertPySequence(list, pool, &out));
+}
Review comment:
OK, let's leave them both here then =)
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> [Python] Array initialization with leading numpy nan fails with exception
> -------------------------------------------------------------------------
>
> Key: ARROW-2240
> URL: https://issues.apache.org/jira/browse/ARROW-2240
> Project: Apache Arrow
> Issue Type: Bug
> Components: Python
> Affects Versions: 0.8.0
> Reporter: Florian Jetter
> Priority: Minor
> Labels: pull-request-available
>
>
> Arrow initialization fails for string arrays with leading numpy NAN
> {code:java}
> import pyarrow as pa
> import numpy as np
> pa.array([np.nan, 'str'])
> # Py3: ArrowException: Unknown error: must be real number, not str
> # Py2: ArrowException: Unknown error: a float is required{code}
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