From 6517f6432ef1fea1d6aa5442314abcc6a418cb08 Mon Sep 17 00:00:00 2001
From: "pre-commit-ci[bot]"
 <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Date: Mon, 13 Jul 2026 23:01:16 +0000
Subject: [PATCH 1/2] [pre-commit.ci] pre-commit autoupdate
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

updates:
- https://github.com/psf/black → https://github.com/psf/black-pre-commit-mirror
- [github.com/psf/black-pre-commit-mirror: 25.1.0 → 26.5.1](https://github.com/psf/black-pre-commit-mirror/compare/25.1.0...26.5.1)
---
 .pre-commit-config.yaml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 7b2dc4358d..9287670948 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -20,8 +20,8 @@ repos:
     hooks:
       - id: pyupgrade
         args: [--py37-plus]
-  - repo: https://github.com/psf/black
-    rev: 25.1.0
+  - repo: https://github.com/psf/black-pre-commit-mirror
+    rev: 26.5.1
     hooks:
       - id: black
   - repo: https://github.com/PyCQA/flake8

From d6338ea98b27401f9cccf415035b4da7919be866 Mon Sep 17 00:00:00 2001
From: "pre-commit-ci[bot]"
 <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Date: Mon, 13 Jul 2026 23:02:16 +0000
Subject: [PATCH 2/2] [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci
---
 finrl/meta/env_stock_trading/env_nas100_wrds.py   | 2 +-
 finrl/meta/paper_trading/common.py                | 1 -
 finrl/meta/preprocessor/example_of_shioaji_api.py | 1 -
 unit_tests/downloaders/test_alpaca_downloader.py  | 1 -
 4 files changed, 1 insertion(+), 4 deletions(-)

diff --git a/finrl/meta/env_stock_trading/env_nas100_wrds.py b/finrl/meta/env_stock_trading/env_nas100_wrds.py
index 47a8b2b81f..69c7719ca2 100644
--- a/finrl/meta/env_stock_trading/env_nas100_wrds.py
+++ b/finrl/meta/env_stock_trading/env_nas100_wrds.py
@@ -36,7 +36,7 @@ def __init__(
         self.min_stock_rate = min_stock_rate
         beg_i, mid_i, end_i = 0, int(211210), int(422420)
 
-        (i0, i1) = (beg_i, mid_i) if if_eval else (mid_i, end_i)
+        i0, i1 = (beg_i, mid_i) if if_eval else (mid_i, end_i)
         data_arrays = (
             self.load_data(cwd) if cwd is not None else price_ary,
             tech_ary,
diff --git a/finrl/meta/paper_trading/common.py b/finrl/meta/paper_trading/common.py
index aae4c52220..469181e845 100644
--- a/finrl/meta/paper_trading/common.py
+++ b/finrl/meta/paper_trading/common.py
@@ -11,7 +11,6 @@
 from torch import Tensor
 from torch.distributions.normal import Normal
 
-
 # -----------------------------------------------------------------------------------------------------------------------------------------
 # PPO
 
diff --git a/finrl/meta/preprocessor/example_of_shioaji_api.py b/finrl/meta/preprocessor/example_of_shioaji_api.py
index a5b51888e3..010ec56537 100644
--- a/finrl/meta/preprocessor/example_of_shioaji_api.py
+++ b/finrl/meta/preprocessor/example_of_shioaji_api.py
@@ -9,7 +9,6 @@
 from finrl.meta.preprocessor.preprocessors import data_split
 from finrl.meta.preprocessor.shioajidownloader import SinopacDownloader
 
-
 TRAIN_START_DATE = "2023-04-13"
 TRAIN_END_DATE = "2024-04-13"
 TRADE_START_DATE = "2024-04-13"
diff --git a/unit_tests/downloaders/test_alpaca_downloader.py b/unit_tests/downloaders/test_alpaca_downloader.py
index e82c37e61e..69df8d24fc 100644
--- a/unit_tests/downloaders/test_alpaca_downloader.py
+++ b/unit_tests/downloaders/test_alpaca_downloader.py
@@ -5,7 +5,6 @@
 
 from finrl.meta.data_processors.processor_alpaca import AlpacaProcessor
 
-
 API_KEY = "???"
 API_SECRET = "???"
 API_BASE_URL = "https://paper-api.alpaca.markets"