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Add a test case to io.test_parsers about issue #2733 #2748

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Add a test case to io.test_parsers about issue #2733 #2748

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BUG: Add test to read_csv with usecols and regexp separator. #2733
garaud Jan 23, 2013
78deb35
Replace the regexp separator by a whitespace delimiter with the same …
Jan 24, 2013
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11 changes: 11 additions & 0 deletions pandas/io/tests/test_parsers.py
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Expand Up @@ -1868,6 +1868,17 @@ def test_usecols_implicit_index_col(self):

tm.assert_frame_equal(result, expected)

def test_usecols_with_whitespace(self):
# #2733
data = 'a b c\n4 apple bat 5.7\n8 orange cow 10'

result = self.read_csv(StringIO(data), delim_whitespace=True,
usecols=('a', 'b'))
expected = DataFrame({'a': ['apple', 'orange'],
'b': ['bat', 'cow']}, index=[4, 8])

tm.assert_frame_equal(result, expected)

def test_pure_python_failover(self):
data = "a,b,c\n1,2,3#ignore this!\n4,5,6#ignorethistoo"

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