A value is trying to be set on a copy of a slice from a DataFrame

[lgabs]

When reunning dialog service, a pandas warning appears warning about changing a copy of a slice dataframe. To avoid this, we can explicitly declare df_filtered a copy.

➜  dialog git:(luan/adopt-lcel-pt1) ✗ docker compose up dialog
[+] Building 0.0s (0/0)                                                                                  docker:desktop-linux
[+] Running 2/2
 ✔ Container dialog-db-1      Running                                                                                    0.0s
 ✔ Container dialog-dialog-1  Created                                                                                    0.1s
Attaching to dialog-dialog-1
dialog-dialog-1  | INFO  [alembic.runtime.migration] Context impl PostgresqlImpl.
dialog-dialog-1  | INFO  [alembic.runtime.migration] Will assume transactional DDL.
dialog-dialog-1  | /app/src/load_csv.py:4: DeprecationWarning:
dialog-dialog-1  | Pyarrow will become a required dependency of pandas in the next major release of pandas (pandas 3.0),
dialog-dialog-1  | (to allow more performant data types, such as the Arrow string type, and better interoperability with other libraries)
dialog-dialog-1  | but was not found to be installed on your system.
dialog-dialog-1  | If this would cause problems for you,
dialog-dialog-1  | please provide us feedback at https://github.com/pandas-dev/pandas/issues/54466
dialog-dialog-1  |
dialog-dialog-1  |   import pandas as pd
dialog-dialog-1  | Generating embeddings for new questions...
dialog-dialog-1  | New questions: 0
dialog-dialog-1  | /app/src/load_csv.py:52: SettingWithCopyWarning:
dialog-dialog-1  | A value is trying to be set on a copy of a slice from a DataFrame
dialog-dialog-1  |
dialog-dialog-1  | See the caveats in the documentation: https://pandas.pydata.org/pandas-docs/stable/user_guide/indexing.html#returning-a-view-versus-a-copy
dialog-dialog-1  |   df_filtered.drop(columns=["primary_key"], inplace=True)
dialog-dialog-1  | INFO:     Will watch for changes in these directories: ['/app/src']
dialog-dialog-1  | INFO:     Uvicorn running on http://0.0.0.0:8000 (Press CTRL+C to quit)
dialog-dialog-1  | INFO:     Started reloader process [44] using WatchFiles
dialog-dialog-1  | INFO:     Started server process [46]