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BUG: .iloc[:] and .loc[:] return a copy of the original object #13873 #16443

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Merged
merged 13 commits into from
Jun 14, 2017
Merged

BUG: .iloc[:] and .loc[:] return a copy of the original object #13873 #16443

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f8c2202
BUG: .iloc[:] and .loc[:] return copy of original object (#13873)
margaret May 22, 2017
84f2d5d
iloc and loc return new object when slice is a tuple
margaret May 22, 2017
fd47ef0
Revert "iloc and loc return new object when slice is a tuple"
margaret May 23, 2017
ef0af94
return a shallow copy instead of deep copy
margaret May 23, 2017
cd4980e
_getitem_lowerdim won't return copy of object if called with [:]
margaret May 23, 2017
6771c59
Add item for indexers returning new object instead of original
margaret May 23, 2017
a405a10
grammar correction - i.e. to e.g.
margaret May 23, 2017
ad1be5d
fix some spacing and linting errors
margaret May 25, 2017
c139b47
remove indexer type from test name
margaret May 25, 2017
7634d3b
add tests for Series
margaret May 25, 2017
c78c43c
test that df.loc[:,0] returns a view
margaret May 25, 2017
3f33c61
fix linting error
margaret May 27, 2017
d130824
add tests for direct slicing
margaret Jun 3, 2017
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fix linting error
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@margaret
margaret committed Jun 14, 2017
commit 3f33c61d3b59519ec8da56b0230e88ae3c1fc880
2 changes: 1 addition & 1 deletion pandas/tests/indexing/test_loc.py
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Expand Up @@ -644,7 +644,7 @@ def test_identity_slice_returns_new_object(self):
# These should not return copies
assert original_df is original_df.loc[:, :]
df = DataFrame(np.random.randn(10, 4))
assert df[0] is df.loc[:,0]
assert df[0] is df.loc[:, 0]

# Same tests for Series
original_series = Series([1, 2, 3, 4, 5, 6])
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