Enhance Dev Experience and Code Quality (#41)

* Format codebase to satisfy linters

* fixing pylance and ruff-checked files

* contributing md, and type and formatting fixes

* setup file capitalization

* test fix

tools/fin/get_account_balances.py

@@ -1,23 +1,33 @@
-from pathlib import Path
 import json
+from pathlib import Path
+
 
 # this is made to demonstrate functionality but it could just as durably be an API call
 # this assumes it's a valid account - use check_account_valid() to verify that first
 def get_account_balance(args: dict) -> dict:
-    
     account_key = args.get("email_address_or_account_ID")
 
-    file_path = Path(__file__).resolve().parent.parent / "data" / "customer_account_data.json"
+    file_path = (
+        Path(__file__).resolve().parent.parent / "data" / "customer_account_data.json"
+    )
     if not file_path.exists():
         return {"error": "Data file not found."}
-    
+
     with open(file_path, "r") as file:
         data = json.load(file)
     account_list = data["accounts"]
 
     for account in account_list:
         if account["email"] == account_key or account["account_id"] == account_key:
-            return{ "name": account["name"], "email": account["email"], "account_id": account["account_id"], "checking_balance": account["checking_balance"], "savings_balance": account["savings_balance"], "bitcoin_balance": account["bitcoin_balance"], "account_creation_date": account["account_creation_date"] }
-        
+            return {
+                "name": account["name"],
+                "email": account["email"],
+                "account_id": account["account_id"],
+                "checking_balance": account["checking_balance"],
+                "savings_balance": account["savings_balance"],
+                "bitcoin_balance": account["bitcoin_balance"],
+                "account_creation_date": account["account_creation_date"],
+            }
+
     return_msg = "Account not found with for " + account_key
-    return {"error": return_msg}
+    return {"error": return_msg}