Как обновить атрибуты строк в экземпляры объекта, если они существуют ⇐ Python

[Anonymous]

Я пытаюсь использовать для цикл для итерации через набор объектов, проверить, хранят ли эти объекты данные строковых данных (в частности, их переменная Pokemon.evolution '), что такое же имя одного из объектов в наборе, а затем заменить эту строку на объект соответствующего имени. Здесь это в «простой говорить», чтобы мы надеемся объяснить, что я имею в виду: < /p>
for x in ():
if Pokemon.name is in pokemon_db:
pokemon_db = Pokemon.evolution
else:
pass

Как рекомендовано, я должен показать некоторые из моих попыток петли, которые здесь:
def evolution_needs_updating_1():
for Pokemon in pokemon_db:
if Pokemon.evolution in pokemon_db is type(str):
print("Pokemon evolution needs updating")
print("Correct evoltuion in place")

''' Error Message:
File "Pokedex_Project\pokedex_project.(v.0.1.2).py", line 102, in
evolution_needs_updating_1()
~~~~~~~~~~~~~~~~~~~~~~~~~~^^
File "Pokedex_Project\pokedex_project.(v.0.1.2).py", line 98, in evolution_needs_updating_1
if Pokemon.evolution in pokemon_db is type(str):
^^^^^^^^^^^^^^^^^
AttributeError: 'str' object has no attribute 'evolution' '''

def evolution_needs_updating_2():
for Pokemon in pokemon_db:
if Pokemon_db.evolution is str:
print("Pokemon evolution needs updating")

''' Error Message:
File "Pokedex_Project\pokedex_project.(v.0.1.2).py", line 109, in
evolution_needs_updating_2()
~~~~~~~~~~~~~~~~~~~~~~~~~~^^
File "Pokedex_Project\pokedex_project.(v.0.1.2).py", line 106, in evolution_needs_updating_2
if Pokemon_db.evolution is str:
^^^^^^^^^^
NameError: name 'Pokemon_db' is not defined. Did you mean: 'pokemon_db'? '''

for pokemon in pokemon_db:
if pokemon.evolution == str in pokemon_db:
print(Pokemon.HasEvolution)
''' Error Message:
pokedex_project.(v.0.1.2).py", line 112, in
if pokemon.evolution == str in pokemon_db:
^^^^^^^^^^^^^^^^^
AttributeError: 'str' object has no attribute 'evolution' '''


for цикл, который я пытаюсь сделать,-это автоматизировать то, что я могу сделать вручную, и вот код для этого вручную:
print(type(ivysaur.evolution)) # Output: - Shows it's still the orignal string I inputted
print(ivysaur.evolution) # Output: venusaur - The original string

# Evolution updates to object's attributes
ivysaur.evolution = venusaur # Changes the ivysaur .evolution object's attribute to the venusaur
charmeleon.evolution = charizard # Same idea for Charmeleon
wartortle.evolution = blastoise # And same again for Wartortle

print(ivysaur.pokedex_number) # Output: 0002
print(ivysaur.evolution.name) # Output: Venusaur - Now showing self.name for Venusaur, meaning the change worked
print(ivysaur.evolution.pokedex_number) # Output: 0003 - Showing Venusaur's self.pokedex_number, again, showing it changed correctly
print(f"Ivysaur's evolution is {ivysaur.evolution.name}, and it originally evolves from {ivysaur.pre_evolution.name}.") # Output: Ivysaur's evolution is Venusaur, and it originally evolves from Bulbasaur.
< /code>
Просто для разъяснения, вот класс и дикта, храня все переменные класса Pokemon вместе: < /p>
class Pokemon:
def __init__(self, name, pokedex_number, height, weight, category, abilities, type, weaknesses, pre_evolution, evolution, image):
self.name = name
self.pokedex_number = pokedex_number
self.height = height # in Metres (Format: float)
self.weight = weight # in Kilograms (Format: float)
self.category = category
self.abilities = abilities
self.type = type
self.weaknesses = weaknesses
self.pre_evolution = pre_evolution # If n/a - Mark as ' False '
self.evolution = evolution # If n/a - Mark as ' False '
self.image = image # Pokedex image stored in 'pokedex_images' folder
...

bulbasaur = Pokemon("Bulbasaur", "0001", 0.7, 6.9, "Seed", ["Overgrow"], ["Grass", "Poison"], ["Fire", "Ice", "Flying", "Psychic"], None, "ivysaur", ...)
ivysaur = Pokemon("Ivysaur", "0002", 1.0, 13.0, "Seed", ["Overgrow"], ["Grass", "Poison"], ["Fire", "Ice", "Flying", "Psychic"], bulbasaur, "venusaur", ...)
venusaur = Pokemon("Venusaur", "0003", 2.0, 100.0, "Seed", ["Overgrow"], ["Grass", "Poison"], ["Fire", "Ice", "Flying", "Psychic"], ivysaur, None, ...)
charmander = Pokemon("Charmander", "0004", 0.6, 8.5, "Lizard", ["Blaze"], ["Fire"], ["Water", "Ground", "Rock"], None, "charmeleon", ...)
charmeleon = Pokemon("Charmeleon", "0005", 1.1, 19.0, "Flame", ["Blaze"], ["Fire"], ["Water", "Ground", "Rock"], charmander, "charizard", ...)
charizard = Pokemon("Charizard", "0006", 1.7, 90.5, "Flame", ["Blaze"], ["Fire"], ["Water", "Ground", "Rock"], "charmeleon", None, ...)
squirtle = Pokemon("Squirtle", "0007", 0.5, 9.0, "Tiny Turtle", "Torrent", ["Water"], ["Grass", "Electric"], None, "wartortle", ...)
wartortle = Pokemon("Wartortle", "0008", 1.7, 90.5, "Turtle", "Torrent", ["Water"], ["Grass", "Electric"], squirtle, "blastoise", ...)
blastoise = Pokemon("Blastoise", "0009", 1.7, 90.5, "Shellfish", "Torrent", ["Water"], ["Grass", "Electric"], "wartortle", None, ...)

pokemon_db = {
"0001" : bulbasaur,
"0002" : ivysaur,
"0003" : venusaur,
"0004" : charmander,
"0005" : charmeleon,
"0006" : charizard,
"0007" : squirtle,
"0008" : wartortle,
"0009" : blastoise}


Подробнее здесь: https://stackoverflow.com/questions/797 ... they-exist