[ET] Add tsv_path to inspector_cli

Pull Request resolved: #7035

Per https://fb.workplace.com/groups/pytorch.edge.users/posts/1640064163530537/?comment_id=1640127190190901
ghstack-source-id: 255094690
@exported-using-ghexport

Differential Revision: [D66379005](https://our.internmc.facebook.com/intern/diff/D66379005/)

Author: jorgep31415

devtools/inspector/_inspector.py

@@ -1143,23 +1143,18 @@ def to_dataframe(
         ]
         return pd.concat(df_list, ignore_index=True)
 
-    def print_data_tabular(
+    def _prepare_dataframe(
         self,
-        file: IO[str] = sys.stdout,
         include_units: bool = True,
         include_delegate_debug_data: bool = False,
-    ) -> None:
+    ) -> pd.DataFrame:
         """
-        Displays the underlying EventBlocks in a structured tabular format, with each row representing an Event.
-
         Args:
-            file: Which IO stream to print to. Defaults to stdout.
-                Not used if this is in an IPython environment such as a Jupyter notebook.
             include_units: Whether headers should include units (default true)
             include_delegate_debug_data: Whether to include delegate debug metadata (default false)
 
         Returns:
-            None
+            Returns a pandas DataFrame of the Events in each EventBlock in the inspector, with additional filtering.
         """
         combined_df = self.to_dataframe(include_units, include_delegate_debug_data)
 
@@ -1171,7 +1166,47 @@ def print_data_tabular(
             ]
         filtered_column_df.reset_index(drop=True, inplace=True)
 
-        display_or_print_df(filtered_column_df, file)
+        return filtered_column_df
+
+    
+    def print_data_tabular(
+        self,
+        file: IO[str] = sys.stdout,
+        include_units: bool = True,
+        include_delegate_debug_data: bool = False,
+    ) -> None:
+        """
+        Displays the underlying EventBlocks in a structured tabular format, with each row representing an Event.
+
+        Args:
+            file: Which IO stream to print to. Defaults to stdout.
+                Not used if this is in an IPython environment such as a Jupyter notebook.
+            include_units: Whether headers should include units (default true)
+            include_delegate_debug_data: Whether to include delegate debug metadata (default false)
+
+        Returns:
+            None
+        """
+        df = self._prepare_dataframe(include_units, include_delegate_debug_data)
+        display_or_print_df(df, file)
+
+
+    def save_data_to_tsv(
+        self,
+        file: IO[str],
+    ) -> None:
+        """
+        Stores the underlying EventBlocks in tsv format to facilitate copy-paste into spreadsheets.
+
+        Args:
+            file: Which IO stream to print to. Do not use stdout, as tab separator is not preserved.
+
+        Returns:
+            None
+        """
+        df = self._prepare_dataframe()
+        df.to_csv(file, sep="\t")
+
 
     # TODO: write unit test
     def find_total_for_module(self, module_name: str) -> float:

devtools/inspector/inspector_cli.py

@@ -43,6 +43,11 @@ def main() -> None:
         required=False,
         help="Provide an optional buffer file path.",
     )
+    parser.add_argument(  
+        "--tsv_path",
+        required=False,
+        help="Provide an optional tsv file path.",
+    )
     parser.add_argument("--compare_results", action="store_true")
 
     args = parser.parse_args()
@@ -55,6 +60,8 @@ def main() -> None:
         target_time_scale=TimeScale(args.target_time_scale),
     )
     inspector.print_data_tabular()
+    if args.tsv_path:
+        inspector.save_data_to_tsv(args.tsv_path)
     if args.compare_results:
         for event_block in inspector.event_blocks:
             if event_block.name == "Execute":