style: format code with Autopep8, Black, ClangFormat, dotnet-format, …

…Go fmt, Gofumpt, Google Java Format, isort, Ktlint, PHP CS Fixer, Prettier, RuboCop, Ruff Formatter, Rustfmt, Scalafmt, StandardJS, StandardRB, swift-format and Yapf

This commit fixes the style issues introduced in 978d3bc according to the output
from Autopep8, Black, ClangFormat, dotnet-format, Go fmt, Gofumpt, Google Java
Format, isort, Ktlint, PHP CS Fixer, Prettier, RuboCop, Ruff Formatter, Rustfmt,
Scalafmt, StandardJS, StandardRB, swift-format and Yapf.

Details: None

transaction_processing/transaction_validation.py

@@ -1,31 +1,36 @@
 import re
 
+
 class TransactionValidation:
     def __init__(self):
         self.validation_rules = {
-            'account_number': {
-                'regex': r'^\d{10}$',
-                'message': 'Invalid account number format. Please enter a 10-digit account number.'
+            "account_number": {
+                "regex": r"^\d{10}$",
+                "message": "Invalid account number format. Please enter a 10-digit account number.",
+            },
+            "amount": {
+                "min": 0,
+                "max": 1000000,
+                "message": "Transaction amount must be between 0 and 1,000,000.",
             },
-            'amount': {
-                'min': 0,
-                'max': 1000000,
-                'message': 'Transaction amount must be between 0 and 1,000,000.'
-            }
         }
 
     def validate_transaction(self, transaction):
         errors = []
         for field, rules in self.validation_rules.items():
             if field in transaction:
                 for rule in rules:
-                    if rule == 'regex':
+                    if rule == "regex":
                         if not re.match(rules[rule], transaction[field]):
-                            errors.append(rules['message'])
-                    elif rule == 'min':
+                            errors.append(rules["message"])
+                    elif rule == "min":
                         if float(transaction[field]) < rules[rule]:
-                            errors.append(f'Transaction amount must be at least {rules[rule]}')
-                    elif rule == 'max':
+                            errors.append(
+                                f"Transaction amount must be at least {rules[rule]}"
+                            )
+                    elif rule == "max":
                         if float(transaction[field]) > rules[rule]:
-                            errors.append(f'Transaction amount must not exceed {rules[rule]}')
+                            errors.append(
+                                f"Transaction amount must not exceed {rules[rule]}"
+                            )
         return errors