From 642392040a53f30fc1882d6f13643e4603380ce1 Mon Sep 17 00:00:00 2001
From: shubham11941140 <63910248+shubham11941140@users.noreply.github.com>
Date: Mon, 18 Oct 2021 18:25:15 +0530
Subject: [PATCH 01/12] Follows 1.2.5 behaviour

---
 pandas/core/indexes/multi.py                    |  6 ++++++
 pandas/tests/series/methods/test_reset_index.py | 14 ++++++++++++++
 2 files changed, 20 insertions(+)

diff --git a/pandas/core/indexes/multi.py b/pandas/core/indexes/multi.py
index e2f1a2d6a1e23..a315d02b298ca 100644
--- a/pandas/core/indexes/multi.py
+++ b/pandas/core/indexes/multi.py
@@ -1673,6 +1673,12 @@ def get_level_values(self, level):
         """
         level = self._get_level_number(level)
         values = self._get_level_values(level)
+        import pandas as pd
+        try:
+            values = pd.to_datetime(values)
+        except:
+            pass
+
         return values
 
     @doc(Index.unique)
diff --git a/pandas/tests/series/methods/test_reset_index.py b/pandas/tests/series/methods/test_reset_index.py
index b159317bf813b..afb37a0b186b3 100644
--- a/pandas/tests/series/methods/test_reset_index.py
+++ b/pandas/tests/series/methods/test_reset_index.py
@@ -179,3 +179,17 @@ def test_reset_index_dtypes_on_empty_series_with_multiindex(array, dtype):
         {"level_0": np.int64, "level_1": np.float64, "level_2": dtype, 0: object}
     )
     tm.assert_series_equal(result, expected)
+
+def test_set_index_MultiIndex():
+    import datetime as dt
+    df = DataFrame({'date': [dt.date(2021, 8, 1),
+                                dt.date(2021, 8, 2),
+                                dt.date(2021, 8, 3)],
+                    'ticker': ['aapl', 'goog', 'yhoo'],
+                    'value': [5.63269, 4.45609, 2.74843]})
+
+    df.set_index(['date', 'ticker'], inplace=True)
+    res = df.index.get_level_values(0)
+    ex = pd.DatetimeIndex(['2021-08-01', '2021-08-02', '2021-08-03'], dtype='datetime64[ns]', name='date', freq=None)
+    for i in range(len(ex)):
+        assert ex[i] == res[i]

From e04cf72b942b61de6702169ce5cd861ceb168049 Mon Sep 17 00:00:00 2001
From: shubham11941140 <63910248+shubham11941140@users.noreply.github.com>
Date: Mon, 18 Oct 2021 18:37:01 +0530
Subject: [PATCH 02/12] PEP 8 Issues

---
 pandas/core/indexes/multi.py                  |  2 +-
 .../tests/series/methods/test_reset_index.py  | 28 ++++++++++++++-----
 2 files changed, 22 insertions(+), 8 deletions(-)

diff --git a/pandas/core/indexes/multi.py b/pandas/core/indexes/multi.py
index a315d02b298ca..76baf169f7e15 100644
--- a/pandas/core/indexes/multi.py
+++ b/pandas/core/indexes/multi.py
@@ -1676,7 +1676,7 @@ def get_level_values(self, level):
         import pandas as pd
         try:
             values = pd.to_datetime(values)
-        except:
+        except ValueError:
             pass
 
         return values
diff --git a/pandas/tests/series/methods/test_reset_index.py b/pandas/tests/series/methods/test_reset_index.py
index afb37a0b186b3..7c40b6fd8e349 100644
--- a/pandas/tests/series/methods/test_reset_index.py
+++ b/pandas/tests/series/methods/test_reset_index.py
@@ -180,16 +180,30 @@ def test_reset_index_dtypes_on_empty_series_with_multiindex(array, dtype):
     )
     tm.assert_series_equal(result, expected)
 
+
 def test_set_index_MultiIndex():
     import datetime as dt
-    df = DataFrame({'date': [dt.date(2021, 8, 1),
-                                dt.date(2021, 8, 2),
-                                dt.date(2021, 8, 3)],
-                    'ticker': ['aapl', 'goog', 'yhoo'],
-                    'value': [5.63269, 4.45609, 2.74843]})
+    df = DataFrame(
+        {'date':
+        [dt.date(2021, 8, 1),
+        dt.date(2021, 8, 2),
+        dt.date(2021, 8, 3)],
+        'ticker':
+        ['aapl', 'goog', 'yhoo'],
+        'value':
+        [5.63269, 4.45609, 2.74843]}
+    )
 
-    df.set_index(['date', 'ticker'], inplace=True)
+    df.set_index(
+        ['date', 'ticker'],
+        inplace=True
+    )
     res = df.index.get_level_values(0)
-    ex = pd.DatetimeIndex(['2021-08-01', '2021-08-02', '2021-08-03'], dtype='datetime64[ns]', name='date', freq=None)
+    ex = pd.DatetimeIndex(
+        ['2021-08-01', '2021-08-02', '2021-08-03'],
+        dtype='datetime64[ns]',
+        name='date',
+        freq=None
+    )
     for i in range(len(ex)):
         assert ex[i] == res[i]

From 92c6be6cbda367d99a47cc075cb2bf2b44f2e33a Mon Sep 17 00:00:00 2001
From: shubham11941140 <63910248+shubham11941140@users.noreply.github.com>
Date: Mon, 18 Oct 2021 18:39:51 +0530
Subject: [PATCH 03/12] Update test_reset_index.py

---
 pandas/tests/series/methods/test_reset_index.py | 14 ++++----------
 1 file changed, 4 insertions(+), 10 deletions(-)

diff --git a/pandas/tests/series/methods/test_reset_index.py b/pandas/tests/series/methods/test_reset_index.py
index 7c40b6fd8e349..4744c600fd0d2 100644
--- a/pandas/tests/series/methods/test_reset_index.py
+++ b/pandas/tests/series/methods/test_reset_index.py
@@ -184,19 +184,13 @@ def test_reset_index_dtypes_on_empty_series_with_multiindex(array, dtype):
 def test_set_index_MultiIndex():
     import datetime as dt
     df = DataFrame(
-        {'date':
-        [dt.date(2021, 8, 1),
-        dt.date(2021, 8, 2),
-        dt.date(2021, 8, 3)],
-        'ticker':
-        ['aapl', 'goog', 'yhoo'],
-        'value':
-        [5.63269, 4.45609, 2.74843]}
+        {'date': [dt.date(2021, 8, 1), dt.date(2021, 8, 2), dt.date(2021, 8, 3)],
+        'ticker':['aapl', 'goog', 'yhoo'],
+        'value': [5.63269, 4.45609, 2.74843]}
     )
 
     df.set_index(
-        ['date', 'ticker'],
-        inplace=True
+        ['date', 'ticker'], inplace=True
     )
     res = df.index.get_level_values(0)
     ex = pd.DatetimeIndex(

From 715b580824fa8d3b92bf72d480df8375e2edd8ed Mon Sep 17 00:00:00 2001
From: shubham11941140 <63910248+shubham11941140@users.noreply.github.com>
Date: Mon, 18 Oct 2021 18:41:50 +0530
Subject: [PATCH 04/12] Update test_reset_index.py

---
 pandas/tests/series/methods/test_reset_index.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/pandas/tests/series/methods/test_reset_index.py b/pandas/tests/series/methods/test_reset_index.py
index 4744c600fd0d2..1476177ddec0d 100644
--- a/pandas/tests/series/methods/test_reset_index.py
+++ b/pandas/tests/series/methods/test_reset_index.py
@@ -184,8 +184,8 @@ def test_reset_index_dtypes_on_empty_series_with_multiindex(array, dtype):
 def test_set_index_MultiIndex():
     import datetime as dt
     df = DataFrame(
-        {'date': [dt.date(2021, 8, 1), dt.date(2021, 8, 2), dt.date(2021, 8, 3)],
-        'ticker':['aapl', 'goog', 'yhoo'],
+        {'date': [dt.date(2021, 8, 1), dt.date(2021, 8, 2),\
+        dt.date(2021, 8, 3)], 'ticker':['aapl', 'goog', 'yhoo'],\
         'value': [5.63269, 4.45609, 2.74843]}
     )
 

From 44075c1f7c56b63272fa4de56e0293505cb626fa Mon Sep 17 00:00:00 2001
From: shubham11941140 <63910248+shubham11941140@users.noreply.github.com>
Date: Mon, 18 Oct 2021 20:00:44 +0530
Subject: [PATCH 05/12] PEP8 issues

---
 pandas/tests/series/methods/test_reset_index.py | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/pandas/tests/series/methods/test_reset_index.py b/pandas/tests/series/methods/test_reset_index.py
index 1476177ddec0d..a0097b008b287 100644
--- a/pandas/tests/series/methods/test_reset_index.py
+++ b/pandas/tests/series/methods/test_reset_index.py
@@ -184,9 +184,11 @@ def test_reset_index_dtypes_on_empty_series_with_multiindex(array, dtype):
 def test_set_index_MultiIndex():
     import datetime as dt
     df = DataFrame(
-        {'date': [dt.date(2021, 8, 1), dt.date(2021, 8, 2),\
-        dt.date(2021, 8, 3)], 'ticker':['aapl', 'goog', 'yhoo'],\
-        'value': [5.63269, 4.45609, 2.74843]}
+        {'date': [
+            dt.date(2021, 8, 1), dt.date(2021, 8, 2), dt.date(2021, 8, 3)
+        ], 'ticker': ['aapl', 'goog', 'yhoo'], 'value': [
+            5.63269, 4.45609, 2.74843
+        ]}
     )
 
     df.set_index(

From 57622f113a2fbec79d6fe90c322281c805c84cc0 Mon Sep 17 00:00:00 2001
From: shubham11941140 <63910248+shubham11941140@users.noreply.github.com>
Date: Mon, 18 Oct 2021 20:57:19 +0530
Subject: [PATCH 06/12] imports resolved

---
 pandas/core/indexes/multi.py                    | 4 ++--
 pandas/tests/series/methods/test_reset_index.py | 6 ++----
 2 files changed, 4 insertions(+), 6 deletions(-)

diff --git a/pandas/core/indexes/multi.py b/pandas/core/indexes/multi.py
index 76baf169f7e15..622af15432f72 100644
--- a/pandas/core/indexes/multi.py
+++ b/pandas/core/indexes/multi.py
@@ -1673,9 +1673,9 @@ def get_level_values(self, level):
         """
         level = self._get_level_number(level)
         values = self._get_level_values(level)
-        import pandas as pd
+        from pandas import to_datetime
         try:
-            values = pd.to_datetime(values)
+            values = to_datetime(values)
         except ValueError:
             pass
 
diff --git a/pandas/tests/series/methods/test_reset_index.py b/pandas/tests/series/methods/test_reset_index.py
index a0097b008b287..ed5554f659763 100644
--- a/pandas/tests/series/methods/test_reset_index.py
+++ b/pandas/tests/series/methods/test_reset_index.py
@@ -1,5 +1,5 @@
 from datetime import datetime
-
+import datetime as dt
 import numpy as np
 import pytest
 
@@ -182,7 +182,6 @@ def test_reset_index_dtypes_on_empty_series_with_multiindex(array, dtype):
 
 
 def test_set_index_MultiIndex():
-    import datetime as dt
     df = DataFrame(
         {'date': [
             dt.date(2021, 8, 1), dt.date(2021, 8, 2), dt.date(2021, 8, 3)
@@ -201,5 +200,4 @@ def test_set_index_MultiIndex():
         name='date',
         freq=None
     )
-    for i in range(len(ex)):
-        assert ex[i] == res[i]
+    tm.assert_index_equal(ex, res)

From fb9591a9e3a2875927792f76f0f91f3500e91eed Mon Sep 17 00:00:00 2001
From: shubham11941140 <63910248+shubham11941140@users.noreply.github.com>
Date: Mon, 18 Oct 2021 21:46:38 +0530
Subject: [PATCH 07/12] black

---
 pandas/core/indexes/multi.py                  |  1 +
 .../tests/series/methods/test_reset_index.py  | 25 +++++++++----------
 2 files changed, 13 insertions(+), 13 deletions(-)

diff --git a/pandas/core/indexes/multi.py b/pandas/core/indexes/multi.py
index 622af15432f72..a09461e315a37 100644
--- a/pandas/core/indexes/multi.py
+++ b/pandas/core/indexes/multi.py
@@ -1674,6 +1674,7 @@ def get_level_values(self, level):
         level = self._get_level_number(level)
         values = self._get_level_values(level)
         from pandas import to_datetime
+
         try:
             values = to_datetime(values)
         except ValueError:
diff --git a/pandas/tests/series/methods/test_reset_index.py b/pandas/tests/series/methods/test_reset_index.py
index ed5554f659763..5a984305fede0 100644
--- a/pandas/tests/series/methods/test_reset_index.py
+++ b/pandas/tests/series/methods/test_reset_index.py
@@ -1,5 +1,6 @@
-from datetime import datetime
 import datetime as dt
+from datetime import datetime
+
 import numpy as np
 import pytest
 
@@ -183,21 +184,19 @@ def test_reset_index_dtypes_on_empty_series_with_multiindex(array, dtype):
 
 def test_set_index_MultiIndex():
     df = DataFrame(
-        {'date': [
-            dt.date(2021, 8, 1), dt.date(2021, 8, 2), dt.date(2021, 8, 3)
-        ], 'ticker': ['aapl', 'goog', 'yhoo'], 'value': [
-            5.63269, 4.45609, 2.74843
-        ]}
+        {
+            "date": [dt.date(2021, 8, 1), dt.date(2021, 8, 2), dt.date(2021, 8, 3)],
+            "ticker": ["aapl", "goog", "yhoo"],
+            "value": [5.63269, 4.45609, 2.74843],
+        }
     )
 
-    df.set_index(
-        ['date', 'ticker'], inplace=True
-    )
+    df.set_index(["date", "ticker"], inplace=True)
     res = df.index.get_level_values(0)
     ex = pd.DatetimeIndex(
-        ['2021-08-01', '2021-08-02', '2021-08-03'],
-        dtype='datetime64[ns]',
-        name='date',
-        freq=None
+        ["2021-08-01", "2021-08-02", "2021-08-03"],
+        dtype="datetime64[ns]",
+        name="date",
+        freq=None,
     )
     tm.assert_index_equal(ex, res)

From 057600811efa403ff8b7d58f31a8d8452c91c916 Mon Sep 17 00:00:00 2001
From: shubham11941140 <63910248+shubham11941140@users.noreply.github.com>
Date: Wed, 27 Oct 2021 17:44:38 +0530
Subject: [PATCH 08/12] Solved import dependency

---
 pandas/tests/series/methods/test_reset_index.py | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/pandas/tests/series/methods/test_reset_index.py b/pandas/tests/series/methods/test_reset_index.py
index 5a984305fede0..b541c52b59d1f 100644
--- a/pandas/tests/series/methods/test_reset_index.py
+++ b/pandas/tests/series/methods/test_reset_index.py
@@ -1,5 +1,4 @@
-import datetime as dt
-from datetime import datetime
+from datetime import datetime, date
 
 import numpy as np
 import pytest
@@ -185,7 +184,7 @@ def test_reset_index_dtypes_on_empty_series_with_multiindex(array, dtype):
 def test_set_index_MultiIndex():
     df = DataFrame(
         {
-            "date": [dt.date(2021, 8, 1), dt.date(2021, 8, 2), dt.date(2021, 8, 3)],
+            "date": [date(2021, 8, 1), date(2021, 8, 2), date(2021, 8, 3)],
             "ticker": ["aapl", "goog", "yhoo"],
             "value": [5.63269, 4.45609, 2.74843],
         }

From 28fb6386cc112426c3df5dc7a668facc4854e204 Mon Sep 17 00:00:00 2001
From: shubham11941140 <63910248+shubham11941140@users.noreply.github.com>
Date: Wed, 27 Oct 2021 22:46:25 +0530
Subject: [PATCH 09/12] try-except removed

---
 pandas/core/array_algos/take.py                 |  4 ++++
 pandas/core/indexes/multi.py                    | 10 +++-------
 pandas/tests/series/methods/test_reset_index.py |  5 ++++-
 3 files changed, 11 insertions(+), 8 deletions(-)

diff --git a/pandas/core/array_algos/take.py b/pandas/core/array_algos/take.py
index e1a29f0dbe395..7841e55d210dd 100644
--- a/pandas/core/array_algos/take.py
+++ b/pandas/core/array_algos/take.py
@@ -1,5 +1,6 @@
 from __future__ import annotations
 
+from datetime import date
 import functools
 from typing import (
     TYPE_CHECKING,
@@ -94,7 +95,10 @@ def take_nd(
     """
     if fill_value is lib.no_default:
         fill_value = na_value_for_dtype(arr.dtype, compat=False)
+    if all(isinstance(x, date) for x in arr):
+        from pandas import to_datetime
 
+        return to_datetime(arr)
     if not isinstance(arr, np.ndarray):
         # i.e. ExtensionArray,
         # includes for EA to catch DatetimeArray, TimedeltaArray
diff --git a/pandas/core/indexes/multi.py b/pandas/core/indexes/multi.py
index a09461e315a37..13c2be27f9002 100644
--- a/pandas/core/indexes/multi.py
+++ b/pandas/core/indexes/multi.py
@@ -82,6 +82,7 @@
     ensure_index,
     get_unanimous_names,
 )
+from pandas.core.indexes.datetimes import DatetimeIndex
 from pandas.core.indexes.frozen import FrozenList
 from pandas.core.indexes.numeric import Int64Index
 from pandas.core.ops.invalid import make_invalid_op
@@ -1637,6 +1638,8 @@ def _get_level_values(self, level: int, unique: bool = False) -> Index:
         if unique:
             level_codes = algos.unique(level_codes)
         filled = algos.take_nd(lev._values, level_codes, fill_value=lev._na_value)
+        if not type(filled) == type(lev) and type(filled) == DatetimeIndex:
+            return filled.rename(name=name)
         return lev._shallow_copy(filled, name=name)
 
     def get_level_values(self, level):
@@ -1673,13 +1676,6 @@ def get_level_values(self, level):
         """
         level = self._get_level_number(level)
         values = self._get_level_values(level)
-        from pandas import to_datetime
-
-        try:
-            values = to_datetime(values)
-        except ValueError:
-            pass
-
         return values
 
     @doc(Index.unique)
diff --git a/pandas/tests/series/methods/test_reset_index.py b/pandas/tests/series/methods/test_reset_index.py
index b541c52b59d1f..90bee53a860b8 100644
--- a/pandas/tests/series/methods/test_reset_index.py
+++ b/pandas/tests/series/methods/test_reset_index.py
@@ -1,4 +1,7 @@
-from datetime import datetime, date
+from datetime import (
+    date,
+    datetime,
+)
 
 import numpy as np
 import pytest

From 92224e7595c83da0e0e1a6d42270b7e4056fe9dc Mon Sep 17 00:00:00 2001
From: shubham11941140 <63910248+shubham11941140@users.noreply.github.com>
Date: Thu, 28 Oct 2021 07:19:09 +0530
Subject: [PATCH 10/12] Solved Index type issue

---
 pandas/core/array_algos/take.py | 3 ---
 pandas/core/indexes/base.py     | 7 +++++--
 pandas/core/indexes/multi.py    | 2 --
 3 files changed, 5 insertions(+), 7 deletions(-)

diff --git a/pandas/core/array_algos/take.py b/pandas/core/array_algos/take.py
index 7841e55d210dd..82db247da16cb 100644
--- a/pandas/core/array_algos/take.py
+++ b/pandas/core/array_algos/take.py
@@ -95,10 +95,7 @@ def take_nd(
     """
     if fill_value is lib.no_default:
         fill_value = na_value_for_dtype(arr.dtype, compat=False)
-    if all(isinstance(x, date) for x in arr):
-        from pandas import to_datetime
 
-        return to_datetime(arr)
     if not isinstance(arr, np.ndarray):
         # i.e. ExtensionArray,
         # includes for EA to catch DatetimeArray, TimedeltaArray
diff --git a/pandas/core/indexes/base.py b/pandas/core/indexes/base.py
index c5cfa4c2d1fcd..ef099a3003bc4 100644
--- a/pandas/core/indexes/base.py
+++ b/pandas/core/indexes/base.py
@@ -1,6 +1,6 @@
 from __future__ import annotations
 
-from datetime import datetime
+from datetime import datetime, date
 import functools
 from itertools import zip_longest
 import operator
@@ -764,7 +764,10 @@ def _shallow_copy(self: _IndexT, values, name: Hashable = no_default) -> _IndexT
         name : Label, defaults to self.name
         """
         name = self._name if name is no_default else name
-
+        u = self._simple_new(values, name=name)
+        if all(isinstance(x, date) for x in u):
+            from pandas import to_datetime
+            return to_datetime(u)
         return self._simple_new(values, name=name)
 
     def _view(self: _IndexT) -> _IndexT:
diff --git a/pandas/core/indexes/multi.py b/pandas/core/indexes/multi.py
index 13c2be27f9002..1b0e489a958ea 100644
--- a/pandas/core/indexes/multi.py
+++ b/pandas/core/indexes/multi.py
@@ -1638,8 +1638,6 @@ def _get_level_values(self, level: int, unique: bool = False) -> Index:
         if unique:
             level_codes = algos.unique(level_codes)
         filled = algos.take_nd(lev._values, level_codes, fill_value=lev._na_value)
-        if not type(filled) == type(lev) and type(filled) == DatetimeIndex:
-            return filled.rename(name=name)
         return lev._shallow_copy(filled, name=name)
 
     def get_level_values(self, level):

From ccecca580ccb86665952d6c05b9ac7bb4a87eddb Mon Sep 17 00:00:00 2001
From: shubham11941140 <63910248+shubham11941140@users.noreply.github.com>
Date: Thu, 28 Oct 2021 07:22:30 +0530
Subject: [PATCH 11/12] pre-commit removed

---
 pandas/core/indexes/base.py | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/pandas/core/indexes/base.py b/pandas/core/indexes/base.py
index ef099a3003bc4..86f2793341d76 100644
--- a/pandas/core/indexes/base.py
+++ b/pandas/core/indexes/base.py
@@ -1,6 +1,9 @@
 from __future__ import annotations
 
-from datetime import datetime, date
+from datetime import (
+    date,
+    datetime,
+)
 import functools
 from itertools import zip_longest
 import operator
@@ -767,6 +770,7 @@ def _shallow_copy(self: _IndexT, values, name: Hashable = no_default) -> _IndexT
         u = self._simple_new(values, name=name)
         if all(isinstance(x, date) for x in u):
             from pandas import to_datetime
+
             return to_datetime(u)
         return self._simple_new(values, name=name)
 

From 5f6d79537b07ae1c9d16771879fc5cd73ba3ff39 Mon Sep 17 00:00:00 2001
From: shubham11941140 <63910248+shubham11941140@users.noreply.github.com>
Date: Thu, 28 Oct 2021 07:26:24 +0530
Subject: [PATCH 12/12] import issue

---
 pandas/core/array_algos/take.py | 1 -
 pandas/core/indexes/multi.py    | 1 -
 2 files changed, 2 deletions(-)

diff --git a/pandas/core/array_algos/take.py b/pandas/core/array_algos/take.py
index 82db247da16cb..e1a29f0dbe395 100644
--- a/pandas/core/array_algos/take.py
+++ b/pandas/core/array_algos/take.py
@@ -1,6 +1,5 @@
 from __future__ import annotations
 
-from datetime import date
 import functools
 from typing import (
     TYPE_CHECKING,
diff --git a/pandas/core/indexes/multi.py b/pandas/core/indexes/multi.py
index 1b0e489a958ea..e2f1a2d6a1e23 100644
--- a/pandas/core/indexes/multi.py
+++ b/pandas/core/indexes/multi.py
@@ -82,7 +82,6 @@
     ensure_index,
     get_unanimous_names,
 )
-from pandas.core.indexes.datetimes import DatetimeIndex
 from pandas.core.indexes.frozen import FrozenList
 from pandas.core.indexes.numeric import Int64Index
 from pandas.core.ops.invalid import make_invalid_op