Alaa Kaddour 7095e755fa fix: replace deprecated pandas fillna(method=) with ffill()/bfill() (#1987) ...

* fix: replace deprecated pandas fillna(method=) with ffill()/bfill()

  Replace deprecated fillna(method="ffill"/"bfill") calls with modern
  pandas ffill() and bfill() methods to fix FutureWarnings in pandas 2.x.

  Also includes black formatting fixes for compliance.

  This addresses the pandas deprecation warnings portion of issue #1981.
  Other issues (date parsing, type conversion, timezone handling) will be
  addressed in separate commits.

  Fixes:
  - Yahoo collector: 2 instances in calc_change() and adjusted_price()
  - BaoStock collector: 1 instance in calc_change()
  - Core utils: resam.py fillna operations
  - Backtest: profit_attribution.py stock data processing
  - High-freq ops: FFillNan and BFillNan operators
  - Position analysis: parse_position.py weight processing

  Partially addresses GitHub issue #1981

* lint with black

* lint with black

* limit minimum version of pandas

* limit minimum version of pandas

---------

Co-authored-by: Linlang <Lv.Linlang@hotmail.com>

2025-08-19 16:00:29 +08:00

..

backtest

fix: replace deprecated pandas fillna(method=) with ffill()/bfill() (#1987)

2025-08-19 16:00:29 +08:00

cli

feat: data improve, support parquet (#1966)

2025-08-07 15:04:37 +08:00

contrib

fix: replace deprecated pandas fillna(method=) with ffill()/bfill() (#1987)

2025-08-19 16:00:29 +08:00

data

fix: replace deprecated pandas fillna(method=) with ffill()/bfill() (#1987)

2025-08-19 16:00:29 +08:00

model

refactor: introduce BaseDataHandler and unify fetch interface (#1958)

2025-06-29 15:50:59 +08:00

rl

fix pkl file not loading in StaticDataLoader (#1896)

2025-03-18 16:05:24 +08:00

strategy

Fix the Errors with unexpected indentation when building Qlib's documentation (#1352)

2022-11-15 08:49:36 +08:00

tests

fixed a problem with multi index caused by the default value of groupkey (#1917)

2025-05-13 16:02:49 +08:00

utils

fix: replace deprecated pandas fillna(method=) with ffill()/bfill() (#1987)

2025-08-19 16:00:29 +08:00

workflow

feat: data improve, support parquet (#1966)

2025-08-07 15:04:37 +08:00

__init__.py

ci: auto release (#1985)

2025-08-18 17:28:00 +08:00

config.py

feat: data improve, support parquet (#1966)

2025-08-07 15:04:37 +08:00

constant.py

Qlib simulator refinement (redo of PR 1244) (#1262)

2022-08-24 14:09:45 +08:00

log.py

Adjust rolling api (#1594)

2023-07-14 12:16:12 +08:00

typehint.py

Refine type hint and recorder (#1248)

2022-08-12 22:48:13 +08:00