From 7752a20c32d3a55c688745764d371ea97bc3b4d0 Mon Sep 17 00:00:00 2001
From: Trevor Bergeron <tbergeron@google.com>
Date: Mon, 2 Oct 2023 22:59:58 +0000
Subject: [PATCH 1/2] feat: add aliases for several series properties

---
 bigframes/series.py                           | 15 ++++++++++
 .../bigframes_vendored/pandas/core/series.py  | 30 +++++++++----------
 2 files changed, 29 insertions(+), 16 deletions(-)

diff --git a/bigframes/series.py b/bigframes/series.py
index 47298d59f5..37d0adb759 100644
--- a/bigframes/series.py
+++ b/bigframes/series.py
@@ -98,6 +98,10 @@ def shape(self) -> typing.Tuple[int]:
     def size(self) -> int:
         return self.shape[0]
 
+    @property
+    def ndim(self) -> int:
+        return 1
+
     @property
     def empty(self) -> bool:
         return self.shape[0] == 0
@@ -118,6 +122,13 @@ def query_job(self) -> Optional[bigquery.QueryJob]:
             self._set_internal_query_job(self._compute_dry_run())
         return self._query_job
 
+    @property
+    def T(self) -> Series:
+        return self.transpose()
+
+    def transpose(self) -> Series:
+        return self
+
     def _set_internal_query_job(self, query_job: bigquery.QueryJob):
         self._query_job = query_job
 
@@ -357,6 +368,8 @@ def ffill(self, *, limit: typing.Optional[int] = None) -> Series:
         window = bigframes.core.WindowSpec(preceding=limit, following=0)
         return self._apply_window_op(agg_ops.LastNonNullOp(), window)
 
+    pad = ffill
+
     def bfill(self, *, limit: typing.Optional[int] = None) -> Series:
         window = bigframes.core.WindowSpec(preceding=0, following=limit)
         return self._apply_window_op(agg_ops.FirstNonNullOp(), window)
@@ -738,6 +751,8 @@ def agg(self, func: str | typing.Sequence[str]) -> scalars.Scalar | Series:
                 agg_ops.lookup_agg_func(typing.cast(str, func))
             )
 
+    aggregate = agg
+
     def skew(self):
         count = self.count()
         if count < 3:
diff --git a/third_party/bigframes_vendored/pandas/core/series.py b/third_party/bigframes_vendored/pandas/core/series.py
index d58c1ccc3b..b0c61612a8 100644
--- a/third_party/bigframes_vendored/pandas/core/series.py
+++ b/third_party/bigframes_vendored/pandas/core/series.py
@@ -8,7 +8,6 @@
 import numpy as np
 from pandas._libs import lib
 from pandas._typing import Axis, FilePath, NaPosition, WriteBuffer
-import pandas.io.formats.format as fmt
 
 from bigframes import constants
 from third_party.bigframes_vendored.pandas.core.generic import NDFrame
@@ -65,6 +64,20 @@ def name(self) -> Hashable:
         """
         raise NotImplementedError(constants.ABSTRACT_METHOD_ERROR_MESSAGE)
 
+    @property
+    def T(self) -> Series:
+        """Return the transpose, which is by definition self."""
+        raise NotImplementedError(constants.ABSTRACT_METHOD_ERROR_MESSAGE)
+
+    def transpose(self) -> Series:
+        """
+        Return the transpose, which is by definition self.
+
+        Returns:
+            Series
+        """
+        raise NotImplementedError(constants.ABSTRACT_METHOD_ERROR_MESSAGE)
+
     def reset_index(
         self,
         *,
@@ -151,21 +164,6 @@ def to_string(
             str or None: String representation of Series if ``buf=None``,
                 otherwise None.
         """
-        formatter = fmt.SeriesFormatter(
-            self,
-            name=name,
-            length=length,
-            header=header,
-            index=index,
-            dtype=dtype,
-            na_rep=na_rep,
-            float_format=float_format,
-            min_rows=min_rows,
-            max_rows=max_rows,
-        )
-        result = formatter.to_string()
-
-        # catch contract violations
         raise NotImplementedError(constants.ABSTRACT_METHOD_ERROR_MESSAGE)
 
     def to_markdown(

From 8a03b8459d5f37198eb7db13dd769a9770246581 Mon Sep 17 00:00:00 2001
From: Trevor Bergeron <tbergeron@google.com>
Date: Wed, 4 Oct 2023 15:45:42 +0000
Subject: [PATCH 2/2] fix merge mistake

---
 bigframes/series.py | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/bigframes/series.py b/bigframes/series.py
index 26adfb71ca..2a0b1ff1fa 100644
--- a/bigframes/series.py
+++ b/bigframes/series.py
@@ -123,6 +123,10 @@ def query_job(self) -> Optional[bigquery.QueryJob]:
             self._set_internal_query_job(self._compute_dry_run())
         return self._query_job
 
+    @property
+    def struct(self) -> structs.StructAccessor:
+        return structs.StructAccessor(self._block)
+
     @property
     def T(self) -> Series:
         return self.transpose()
@@ -130,9 +134,6 @@ def T(self) -> Series:
     def transpose(self) -> Series:
         return self
 
-    def struct(self) -> structs.StructAccessor:
-        return structs.StructAccessor(self._block)
-
     def _set_internal_query_job(self, query_job: bigquery.QueryJob):
         self._query_job = query_job