尽管已定义，但我一直收到 "undefined"
I keep getting "undefined" although it is defined
我一直收到 'spell' 未定义。
请记住，我对此很陌生。我主要关注 Udemy 中的教程 class。
Traceback (most recent call last):
File "C:\Users\RealD\PycharmProjects\PythonRPGgame\main.py", line 106, in <module>
player.reduce_mp(spell.cost)
NameError: name 'spell' is not defined
我在一个单独的 class 文件中定义了 'spell'，我已将其导入 main.py 脚本
magic.py
class Spell:
def __init__(self, name, cost, dmg, type):
self.name = name
self.cost = cost
self.dmg = dmg
self.type = type
def generate_damage(self):
low = self.dmg - 15
high = self.dmg + 15
return random.randrange(low, high)
据说错误在这里：
player.reduce_mp(spell.cost)
inventory.py
class Item:
def __init__(self, name, type, descrip, prop):
# descrip meaning description
self.name = name
self.type = type
self.descrip = descrip
self.prop = prop
game.py
import random
from classes.inventory import Item
import pprint
class bcolors:
HEADER = '3[95m'
OKBLUE = '3[94m'
OKGREEN = '3[92m'
WARNING = '3[93m'
FAIL = '3[91m'
ENDC = '3[0m'
BOLD = '3[1m'
UNDERLINE = '3[4m'
class Person:
def __init__(self, hp, mp, atk, df, magic, items):
self.maxhp = hp
self.hp = hp
self.maxmp = mp
self.mp = mp
self.atkl = atk - 10
self.atkh = atk + 10
self.df = df
self.magic = magic
self.items = items
self.action = ["Attack", "Magic", "Items"]
def generate_damage(self):
return random.randrange(self.atkl, self.atkh)
def heal(self, dmg):
self.hp += dmg
if self.hp > self.maxhp:
self.hp = self.maxhp
'''def generate_spell_damage(self, i):
mgl = self.magic[i]["dmg"] - 5
mgh = self.magic[i]["dmg"] + 5
return random.randrange(mgl, mgh)'''
def take_damage(self, dmg):
self.hp -= dmg
if self.hp < 0:
self.hp = 0
return self.hp
def get_hp(self):
return self.hp
def get_max_hp(self):
return self.maxhp
def get_mp(self):
return self.mp
def get_max_mp(self):
return self.maxmp
def reduce_mp(self, cost):
self.mp -= cost
def choose_action(self):
i = 1
print("\n" + bcolors.BOLD + bcolors.HEADER + "ACTIONS:" + bcolors.ENDC)
for item in self.action:
print(" " + str(i) + ". ", item)
i += 1
def choose_magic(self):
i = 1
print("\n" + bcolors.OKBLUE + bcolors.BOLD + "MAGIC:" + bcolors.ENDC)
for spell in self.magic:
print(" " + str(i) + ". ", spell.name, "(cost:", str(spell.cost) + ")")
i += 1
def choose_item(self):
i = 1
print("\n" + bcolors.OKGREEN + bcolors.BOLD + "ITEMS:" + bcolors.ENDC)
for item in self.items:
print((" " + str(i)) + ". " , item["item"].name, ":", item["item"].descrip, " (x" + str(item["quantity"]) + ")")
i += 1
Main.py:
from classes.game import Person, bcolors
from classes.magic import Spell
from classes.inventory import Item
import re
fire = Spell("Fire", 10, 100, "black")
thunder = Spell("Thunder", 10, 100, "black")
blizzard = Spell("Blizzard", 10, 100, "black")
meteor = Spell("Meteor", 10, 100, "black")
quake = Spell("Quake", 14, 140, "black")
cure = Spell("Cure", 12, 120, "white")
cura = Spell("Cura", 18, 200, "white")
potion = Item("Potion", "potion", "Heals 50 HP", 50)
hipotion = Item("Hi-Potion", "potion", "Heals 100 HP", 50)
superpotion = Item("Super Potion", "potion", "Heals 500 HP", 500)
elixer = Item("Elixer", "elixer", "Fully restores HP/MP of one party member", 9999)
hielixer = Item("Super Elixer", "elixer", "Fully restores entire party's HP/MP", 9999)
grenade = Item("Grenade", "attack", "Deals 500 damage", 500)
player_spells = [fire, thunder, blizzard, meteor, quake, cure, cura]
player_items = [{"item": potion, "quantity": 15}, {"item": hipotion, "quantity": 5},
{"item": superpotion, "quantity": 5}, {"item":elixer, "quantity": 5},
{"item": hielixer, "quantity": 2}, {"item": grenade, "quantity": 5}]
player = Person(460, 65, 60, 34, player_spells, player_items)
enemy = Person(1200, 65, 45, 25, [], [])
running = True
i = 0
print(bcolors.FAIL + bcolors.BOLD + " AN ENEMY ATTACKS!" + bcolors.ENDC)
print(bcolors.BOLD, bcolors.HEADER + "Press 0 to go back to the previous menu" + bcolors.ENDC)
while running:
print("===============================")
player.choose_action()
choice = input(bcolors.BOLD + "Choose action:" + bcolors.ENDC)
print("===============================")
index = int(choice) - 1
if index == 0:
dmg = player.generate_damage()
enemy.take_damage(dmg)
print("===============================")
print(bcolors.FAIL + "You attacked for", dmg, "points of damage!" + bcolors.ENDC)
elif index == 1:
player.choose_magic()
magic_choice = int(input("Choose Magic: ")) - 1
if magic_choice == -1:
continue
spell = player.magic[magic_choice]
magic_dmg = player.magic[magic_choice].generate_damage()
current_mp = player.get_mp()
if spell.cost > current_mp:
print(bcolors.FAIL + "\nNot enough MP\n" + bcolors.ENDC)
continue
if spell.type == "white":
player.heal(magic_dmg)
print(bcolors.OKBLUE + "\n" + spell.name + "heals for", str(magic_dmg), "HP" + bcolors.ENDC)
elif spell.type == "black":
enemy.take_damage(magic_dmg)
print(bcolors.OKBLUE + "\n" + spell.name + "deals", str(magic_dmg), "points of damage!" + bcolors.ENDC)
elif index == 2:
player.choose_item()
item_choice = int(input("Choose item: ")) - 1
if item_choice == -1:
continue
item = player.items[item_choice]["item"]
player.items[item_choice]["quantity"] -= 1
if item.type == "potion":
player.heal(item.prop)
print(bcolors.OKGREEN + "\n" + item.name + " heals for", str(item.prop), "HP" + bcolors.ENDC)
elif item.type == "elixer":
player.hp = player.maxhp
player.mp = player.maxmp
print(bcolors.OKGREEN + "\n" + item.name + " fully restores HP/MP" + bcolors.ENDC)
elif item.type == "attack":
enemy.take_damage(item.prop)
print(bcolors.FAIL + "\n" + item.name + " deals", str(item.prop), " points of damage" + bcolors.ENDC)
player.reduce_mp(spell.cost)
enemy.take_damage(magic_dmg)
print(bcolors.OKBLUE + "\n" + spell.name + " deals", str(magic_dmg), "points of damage!" + bcolors.ENDC)
enemy_choice = 1
enemy_dmg = enemy.generate_damage()
player.take_damage(enemy_dmg)
print(bcolors.FAIL + "Enemy attacks for", enemy_dmg, "points of damage!" + bcolors.ENDC)
print("===============================")
print("Enemy HP:", bcolors.FAIL + str(enemy.get_hp()) + "/" + str(enemy.get_max_hp()) + bcolors.ENDC + "\n")
print("Your HP:", bcolors.OKGREEN + str(player.get_hp()) + "/" + str(player.get_max_hp()) + bcolors.ENDC + "\n")
print("Your MP:", bcolors.OKBLUE + str(player.get_mp()) + "/" + str(player.get_max_mp()) + bcolors.ENDC)
if enemy.get_hp() == 0:
print(bcolors.OKGREEN + "You won the battle!" + bcolors.ENDC)
running = False
elif player.get_hp() == 0:
print(bcolors.FAIL + "You have died." + bcolors.ENDC)
running = False
看起来“spell”是在 index == 1 的分支中定义的。但错误来自 index == 2 的分支。如果先采用该分支，那么此时 spell 仍将是未定义的.
我怀疑问题行错位了，当你使用了一个物品时你不应该收取法术费用。
我已经弄明白了。我需要下面的代码
spell = player.magic[magic_choice]
我一直收到 'spell' 未定义。
请记住，我对此很陌生。我主要关注 Udemy 中的教程 class。
Traceback (most recent call last):
File "C:\Users\RealD\PycharmProjects\PythonRPGgame\main.py", line 106, in <module>
player.reduce_mp(spell.cost)
NameError: name 'spell' is not defined
我在一个单独的 class 文件中定义了 'spell'，我已将其导入 main.py 脚本
magic.py
class Spell:
def __init__(self, name, cost, dmg, type):
self.name = name
self.cost = cost
self.dmg = dmg
self.type = type
def generate_damage(self):
low = self.dmg - 15
high = self.dmg + 15
return random.randrange(low, high)
据说错误在这里：
player.reduce_mp(spell.cost)
inventory.py
class Item:
def __init__(self, name, type, descrip, prop):
# descrip meaning description
self.name = name
self.type = type
self.descrip = descrip
self.prop = prop
game.py
import random
from classes.inventory import Item
import pprint
class bcolors:
HEADER = '3[95m'
OKBLUE = '3[94m'
OKGREEN = '3[92m'
WARNING = '3[93m'
FAIL = '3[91m'
ENDC = '3[0m'
BOLD = '3[1m'
UNDERLINE = '3[4m'
class Person:
def __init__(self, hp, mp, atk, df, magic, items):
self.maxhp = hp
self.hp = hp
self.maxmp = mp
self.mp = mp
self.atkl = atk - 10
self.atkh = atk + 10
self.df = df
self.magic = magic
self.items = items
self.action = ["Attack", "Magic", "Items"]
def generate_damage(self):
return random.randrange(self.atkl, self.atkh)
def heal(self, dmg):
self.hp += dmg
if self.hp > self.maxhp:
self.hp = self.maxhp
'''def generate_spell_damage(self, i):
mgl = self.magic[i]["dmg"] - 5
mgh = self.magic[i]["dmg"] + 5
return random.randrange(mgl, mgh)'''
def take_damage(self, dmg):
self.hp -= dmg
if self.hp < 0:
self.hp = 0
return self.hp
def get_hp(self):
return self.hp
def get_max_hp(self):
return self.maxhp
def get_mp(self):
return self.mp
def get_max_mp(self):
return self.maxmp
def reduce_mp(self, cost):
self.mp -= cost
def choose_action(self):
i = 1
print("\n" + bcolors.BOLD + bcolors.HEADER + "ACTIONS:" + bcolors.ENDC)
for item in self.action:
print(" " + str(i) + ". ", item)
i += 1
def choose_magic(self):
i = 1
print("\n" + bcolors.OKBLUE + bcolors.BOLD + "MAGIC:" + bcolors.ENDC)
for spell in self.magic:
print(" " + str(i) + ". ", spell.name, "(cost:", str(spell.cost) + ")")
i += 1
def choose_item(self):
i = 1
print("\n" + bcolors.OKGREEN + bcolors.BOLD + "ITEMS:" + bcolors.ENDC)
for item in self.items:
print((" " + str(i)) + ". " , item["item"].name, ":", item["item"].descrip, " (x" + str(item["quantity"]) + ")")
i += 1
Main.py:
from classes.game import Person, bcolors
from classes.magic import Spell
from classes.inventory import Item
import re
fire = Spell("Fire", 10, 100, "black")
thunder = Spell("Thunder", 10, 100, "black")
blizzard = Spell("Blizzard", 10, 100, "black")
meteor = Spell("Meteor", 10, 100, "black")
quake = Spell("Quake", 14, 140, "black")
cure = Spell("Cure", 12, 120, "white")
cura = Spell("Cura", 18, 200, "white")
potion = Item("Potion", "potion", "Heals 50 HP", 50)
hipotion = Item("Hi-Potion", "potion", "Heals 100 HP", 50)
superpotion = Item("Super Potion", "potion", "Heals 500 HP", 500)
elixer = Item("Elixer", "elixer", "Fully restores HP/MP of one party member", 9999)
hielixer = Item("Super Elixer", "elixer", "Fully restores entire party's HP/MP", 9999)
grenade = Item("Grenade", "attack", "Deals 500 damage", 500)
player_spells = [fire, thunder, blizzard, meteor, quake, cure, cura]
player_items = [{"item": potion, "quantity": 15}, {"item": hipotion, "quantity": 5},
{"item": superpotion, "quantity": 5}, {"item":elixer, "quantity": 5},
{"item": hielixer, "quantity": 2}, {"item": grenade, "quantity": 5}]
player = Person(460, 65, 60, 34, player_spells, player_items)
enemy = Person(1200, 65, 45, 25, [], [])
running = True
i = 0
print(bcolors.FAIL + bcolors.BOLD + " AN ENEMY ATTACKS!" + bcolors.ENDC)
print(bcolors.BOLD, bcolors.HEADER + "Press 0 to go back to the previous menu" + bcolors.ENDC)
while running:
print("===============================")
player.choose_action()
choice = input(bcolors.BOLD + "Choose action:" + bcolors.ENDC)
print("===============================")
index = int(choice) - 1
if index == 0:
dmg = player.generate_damage()
enemy.take_damage(dmg)
print("===============================")
print(bcolors.FAIL + "You attacked for", dmg, "points of damage!" + bcolors.ENDC)
elif index == 1:
player.choose_magic()
magic_choice = int(input("Choose Magic: ")) - 1
if magic_choice == -1:
continue
spell = player.magic[magic_choice]
magic_dmg = player.magic[magic_choice].generate_damage()
current_mp = player.get_mp()
if spell.cost > current_mp:
print(bcolors.FAIL + "\nNot enough MP\n" + bcolors.ENDC)
continue
if spell.type == "white":
player.heal(magic_dmg)
print(bcolors.OKBLUE + "\n" + spell.name + "heals for", str(magic_dmg), "HP" + bcolors.ENDC)
elif spell.type == "black":
enemy.take_damage(magic_dmg)
print(bcolors.OKBLUE + "\n" + spell.name + "deals", str(magic_dmg), "points of damage!" + bcolors.ENDC)
elif index == 2:
player.choose_item()
item_choice = int(input("Choose item: ")) - 1
if item_choice == -1:
continue
item = player.items[item_choice]["item"]
player.items[item_choice]["quantity"] -= 1
if item.type == "potion":
player.heal(item.prop)
print(bcolors.OKGREEN + "\n" + item.name + " heals for", str(item.prop), "HP" + bcolors.ENDC)
elif item.type == "elixer":
player.hp = player.maxhp
player.mp = player.maxmp
print(bcolors.OKGREEN + "\n" + item.name + " fully restores HP/MP" + bcolors.ENDC)
elif item.type == "attack":
enemy.take_damage(item.prop)
print(bcolors.FAIL + "\n" + item.name + " deals", str(item.prop), " points of damage" + bcolors.ENDC)
player.reduce_mp(spell.cost)
enemy.take_damage(magic_dmg)
print(bcolors.OKBLUE + "\n" + spell.name + " deals", str(magic_dmg), "points of damage!" + bcolors.ENDC)
enemy_choice = 1
enemy_dmg = enemy.generate_damage()
player.take_damage(enemy_dmg)
print(bcolors.FAIL + "Enemy attacks for", enemy_dmg, "points of damage!" + bcolors.ENDC)
print("===============================")
print("Enemy HP:", bcolors.FAIL + str(enemy.get_hp()) + "/" + str(enemy.get_max_hp()) + bcolors.ENDC + "\n")
print("Your HP:", bcolors.OKGREEN + str(player.get_hp()) + "/" + str(player.get_max_hp()) + bcolors.ENDC + "\n")
print("Your MP:", bcolors.OKBLUE + str(player.get_mp()) + "/" + str(player.get_max_mp()) + bcolors.ENDC)
if enemy.get_hp() == 0:
print(bcolors.OKGREEN + "You won the battle!" + bcolors.ENDC)
running = False
elif player.get_hp() == 0:
print(bcolors.FAIL + "You have died." + bcolors.ENDC)
running = False
看起来“spell”是在 index == 1 的分支中定义的。但错误来自 index == 2 的分支。如果先采用该分支，那么此时 spell 仍将是未定义的.
我怀疑问题行错位了，当你使用了一个物品时你不应该收取法术费用。
我已经弄明白了。我需要下面的代码
spell = player.magic[magic_choice]