Add rules for black formatter

function_app.py

@@ -4,14 +4,10 @@
 app = func.FunctionApp()
 
 
-@app.schedule(
-    schedule="0 */1 * * * *", arg_name="myTimer", run_on_startup=True, use_monitor=False
-)
-# myTimer is defined by azure functions and cannot be changed
-# pylint: disable-next=invalid-name
-def get_derivates_from_geodienste(myTimer: func.TimerRequest) -> None:
-    """Timer trigger function which gets the derivatives from the geodienste.de API every 5 minutes."""
-    if myTimer.past_due:
+@app.schedule(schedule="0 */1 * * * *", arg_name="timer", run_on_startup=True, use_monitor=False)
+def trigger_retrieve_geodata(timer: func.TimerRequest) -> None:
+    """Timer trigger function which starts the retrieval of geodata from geodienste.ch."""
+    if timer.past_due:
         logging.info("The timer is past due!")
 
     logging.info("Python timer trigger function executed.")

pyproject.toml

@@ -0,0 +1,4 @@
+[tool.black]
+line-length = 100
+target-version = ['py311']
+include = '\.pyi?$'