Update pizza_menu.py

Author: stephengruppetta

python-mappings/pizza_menu.py

@@ -12,20 +12,17 @@ def __init__(self, menu: dict):
             self._first_letters[first_letter] = key
             self._menu[key] = value
 
-
     def _raise_duplicate_key_error(self, key):
         raise ValueError(
             f"'{key}' is an invalid name. All pizzas must have unique first letters"
         )
 
-
     def __getitem__(self, key):
         if key not in self._menu and len(key) > 1:
             raise KeyError(key)
         key = self._first_letters.get(key[0].lower(), key)
         return self._menu[key]
 
-
     def __setitem__(self, key, value):
         first_letter = key[0].lower()
         if len(key) == 1:
@@ -38,29 +35,23 @@ def __setitem__(self, key, value):
             self._first_letters[first_letter] = key
             self._menu[key] = value
 
-
     def __delitem__(self, key):
         if key not in self._menu and len(key) > 1:
             raise KeyError(key)
         key = self._first_letters.pop(key[0].lower(), key)
         del self._menu[key]
 
-
     def __iter__(self):
         return iter(self._menu)
 
-
     def __len__(self):
         return len(self._menu)
 
-
     def __repr__(self):
         return f"{self.__class__.__name__}({self._menu})"
 
-
     def __str__(self):
         return str(self._menu)
 
-
     def __contains__(self, key):
         return key in self._menu