Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

BUG: Allow pd.unique to accept tuple of strings #17108

Merged
merged 2 commits into from
Jul 30, 2017
Merged

BUG: Allow pd.unique to accept tuple of strings #17108

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
7a1dcdd
BUG: Allow pd.unique to accept tuple of strings
mroeschke Jul 29, 2017
822a4dc
Add GH issue number
mroeschke Jul 30, 2017
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
1 change: 1 addition & 0 deletions doc/source/whatsnew/v0.21.0.txt
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -327,3 +327,4 @@ Other
^^^^^
- Bug in :func:`eval` where the ``inplace`` parameter was being incorrectly handled (:issue:`16732`)
- Bug in ``.isin()`` in which checking membership in empty ``Series`` objects raised an error (:issue:`16991`)
- Bug in :func:`unique` where checking a tuple of strings raised a ``TypeError`` (:issue:`17108`)
2 changes: 2 additions & 0 deletions pandas/core/algorithms.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -170,6 +170,8 @@ def _ensure_arraylike(values):
ABCIndexClass, ABCSeries)):
inferred = lib.infer_dtype(values)
if inferred in ['mixed', 'string', 'unicode']:
if isinstance(values, tuple):
values = list(values)
values = lib.list_to_object_array(values)
else:
values = np.asarray(values)
Expand Down
9 changes: 9 additions & 0 deletions pandas/tests/test_algos.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -415,6 +415,15 @@ def test_order_of_appearance(self):
expected = pd.Categorical(list('abc'))
tm.assert_categorical_equal(result, expected)

@pytest.mark.parametrize("arg ,expected", [
(('1', '1', '2'), np.array(['1', '2'], dtype=object)),
(('foo',), np.array(['foo'], dtype=object))
])
def test_tuple_with_strings(self, arg, expected):
Copy link
Member

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Put the issue number (in this case, the PR number) below this function definition (e.g. "see #17108")

# see GH 17108
result = pd.unique(arg)
tm.assert_numpy_array_equal(result, expected)


class TestIsin(object):

Expand Down