Add trading-cli tool to query DA prices from entsoe API (#94)

Initial version of trading CLI tool, which for now can only query DA
prices from the entsoe API. Will be extended to support the real
endpoints of the trading API later.

Example:
```
$trading-cli --entsoe_key=$ENTOSOE_API_KEY --start "2025-01-06T00:00:00+01:00" --end "2025-01-06T06:00:00+01:00" --country_code "DE_LU"
timestamp,price
2025-01-06 00:00:00+01:00,27.52
2025-01-06 01:00:00+01:00,19.26
2025-01-06 02:00:00+01:00,11.35
2025-01-06 03:00:00+01:00,9.2
2025-01-06 04:00:00+01:00,10.0
2025-01-06 05:00:00+01:00,14.81
2025-01-06 06:00:00+01:00,23.82
```

Author: cwasicki

RELEASE_NOTES.md

@@ -10,6 +10,8 @@
 
 ## New Features
 
+* Add trading-cli tool to interact with the trading API. This initial version only provides a tool to list day-ahead prices from the entsoe API.
+
 <!-- Here goes the main new features and examples or instructions on how to use them -->
 
 ## Bug Fixes

pyproject.toml

@@ -27,6 +27,7 @@ classifiers = [
 requires-python = ">= 3.11, < 4"
 # TODO(cookiecutter): Remove and add more dependencies if appropriate
 dependencies = [
+  "entsoe-py >= 0.6.16, < 1",
   "frequenz-api-common >= 0.6.3, < 0.7.0",
   "grpcio >= 1.66.2, < 2",
   "frequenz-channels >= 1.0.0, < 2",
@@ -37,6 +38,9 @@ dependencies = [
 ]
 dynamic = ["version"]
 
+[project.scripts]
+trading-cli = "frequenz.client.electricity_trading.cli.__main__:main"
+
 [[project.authors]]
 name = "Frequenz Energy-as-a-Service GmbH"
 email = "[email protected]"
@@ -66,6 +70,7 @@ dev-mkdocs = [
 dev-mypy = [
   "mypy == 1.13.0",
   "grpc-stubs == 1.53.0.5",
+  "pandas-stubs == 2.2.2.240807",
   "types-Markdown == 3.7.0.20241204",
   "types-protobuf == 5.28.3.20241030",
   # For checking the noxfile, docs/ script, and tests
@@ -174,7 +179,7 @@ packages = ["frequenz.client.electricity_trading"]
 strict = true
 
 [[tool.mypy.overrides]]
-module = ["mkdocs_macros.*", "sybil", "sybil.*", "deepdiff"]
+module = ["mkdocs_macros.*", "sybil", "sybil.*", "deepdiff", "entsoe", "entsoe."]
 ignore_missing_imports = true
 
 [tool.setuptools_scm]

src/frequenz/client/electricity_trading/cli/__init__.py

@@ -0,0 +1,4 @@
+# License: MIT
+# Copyright © 2025 Frequenz Energy-as-a-Service GmbH
+
+"""Package for CLI tool to interact with the trading API."""

src/frequenz/client/electricity_trading/cli/__main__.py

@@ -0,0 +1,43 @@
+# License: MIT
+# Copyright © 2025 Frequenz Energy-as-a-Service GmbH
+
+"""CLI tool to interact with the trading API."""
+
+import argparse
+from datetime import datetime, timedelta
+from zoneinfo import ZoneInfo
+
+from frequenz.client.electricity_trading.cli.day_ahead import list_day_ahead_prices
+
+
+def main() -> None:
+    """Run main entry point for the CLI tool."""
+    tz = ZoneInfo("Europe/Berlin")
+    midnight = datetime.combine(datetime.now(tz), datetime.min.time(), tzinfo=tz)
+    parser = argparse.ArgumentParser()
+    parser.add_argument("--entsoe_key", type=str, required=True)
+    parser.add_argument(
+        "--start",
+        type=datetime.fromisoformat,
+        required=False,
+        default=midnight,
+    )
+    parser.add_argument(
+        "--end",
+        type=datetime.fromisoformat,
+        required=False,
+        default=midnight + timedelta(days=2),
+    )
+    parser.add_argument("--country_code", type=str, required=False, default="DE_LU")
+    args = parser.parse_args()
+
+    list_day_ahead_prices(
+        entsoe_key=args.entsoe_key,
+        start=args.start,
+        end=args.end,
+        country_code=args.country_code,
+    )
+
+
+if __name__ == "__main__":
+    main()

src/frequenz/client/electricity_trading/cli/day_ahead.py

@@ -0,0 +1,36 @@
+# License: MIT
+# Copyright © 2025 Frequenz Energy-as-a-Service GmbH
+
+"""Functions for CLI tool to interact with the trading API."""
+
+from datetime import datetime
+
+import pandas as pd
+from entsoe import EntsoePandasClient
+
+
+def list_day_ahead_prices(
+    entsoe_key: str,
+    start: datetime,
+    end: datetime,
+    country_code: str,
+) -> None:
+    """
+    List day-ahead prices for a given country code.
+
+    Args:
+        entsoe_key: The API key for the Entsoe API
+        start: The start date of the query
+        end: The end date of the query
+        country_code: The country code for which to query the prices
+    """
+    start_ts = pd.Timestamp(start)
+    end_ts = pd.Timestamp(end)
+
+    client = EntsoePandasClient(api_key=entsoe_key)
+    da_prices = client.query_day_ahead_prices(country_code, start=start_ts, end=end_ts)
+
+    da_prices.name = "price"
+    da_prices.index.name = "timestamp"
+
+    print(da_prices.to_csv())