Add Excel route model conversion function

etl/etl_routemodel/etl_route.py

@@ -0,0 +1,41 @@
+# Note: Need to 'pip install openpyxl'
+import pandas as pd
+from pathlib import Path
+
+def normalize_route_segments(file_name):
+    combined_segments_df = pd.DataFrame()
+    segment_sheets = pd.read_excel(file_name, engine="openpyxl", sheet_name=None, header=2)
+
+    # Add segment and indicate loop segments
+    for segment_name, segment_df in segment_sheets.items():
+        segment_df = segment_df.loc[:, ~segment_df.columns.str.contains("^Unnamed")]
+        segment_df["Segment"] = segment_name
+
+        if segment_name.lower().find("loop") != -1:
+            segment_df["is_loop"] = True
+        else:
+            segment_df["is_loop"] = False
+        combined_segments_df = pd.concat([combined_segments_df, segment_df], ignore_index=True)
+
+    return combined_segments_df
+
+
+def save_to_csv(df, excel_file_name):
+    csv_file_name = Path(excel_file_name).with_suffix(".csv")
+    df.to_csv(csv_file_name, index=False)
+    return df
+
+
+def main():
+    # Set Excel file name
+    excel_file_name = "route-steps-2022.xlsx"
+
+    # Normalize route steps
+    combined_segments_df = normalize_route_segments(excel_file_name)
+
+    # Save combined DataFrame to CSV
+    save_to_csv(combined_segments_df, excel_file_name)
+
+
+if __name__ == "__main__":
+    main()