Python 难倒一个新手的值错误
我正在努力完成这个额外的学分练习，但我遇到了麻烦。我不断得到一个值错误，我不知道为什么。我知道我应该使用dict和课堂，但我还没有达到书中的这一部分 我的想法是，我想使用这个库存函数从列表Python 难倒一个新手的值错误,python,Python,我正在努力完成这个额外的学分练习，但我遇到了麻烦。我不断得到一个值错误，我不知道为什么。我知道我应该使用dict和课堂，但我还没有达到书中的这一部分 我的想法是，我想使用这个库存函数从列表character\u sheet中删除以前的武器，并将其替换为用户刚购买的武器。这是我相信的相关代码，如果我遗漏了什么，请告诉我 提前感谢，stack overflow真的帮了我很大的忙，因为我以前没有学习python的经验 weapon_choice = raw_input(":> ")
character\u sheetweapon_choice = raw_input(":> ")
if "sword" in weapon_choice:
current_weapon = weapons[0]
inventory(weapons[0])
character_sheet.append("Current Weapon %s" % current_weapon)
elif weapons[1] in weapon_choice:
current_weapon = weapons[1]
inventory(weapons[1])
character_sheet.append("Current Weapon %s" % current_weapon)
elif weapons[2] in weapon_choice:
current_weapon = weapons[2]
inventory(weapons[2])
character_sheet.append("Current Weapon %s" % current_weapon)
else:
print "I dont know what %s means" % weapon_choice
buy_weapon(level_zero_weapons)
weapon_choice = raw_input(":> ")
if weapons[0] in weapon_choice:
character_sheet.remove(current_weapon)
current_weapon = weapons[0]
inventory(weapons[0])
character_sheet.append("Current Weapon %s" % current_weapon)
elif weapons[1] in weapon_choice:
character_sheet.remove(current_weapon)
current_weapon = weapons[1]
inventory(weapons[1])
character_sheet.append("Current Weapon %s" % current_weapon)
elif weapons[2] in weapon_choice:
character_sheet.remove(current_weapon)
current_weapon = weapons[2]
inventory(weapons[2])
character_sheet.append("Current Weapon %s" % current_weapon)
# Weapon lists
level_zero_weapons = ['short sword', 'club', 'dagger']
level_one_weapons = ['sword', 'mace', 'rapier']
level_two_weapons = ['long sword', 'morningstar', 'trident']
level_three_weapons = ['claymore', 'flail', 'sycthe']
level_four_weapons = ['bastard sword', 'dragon bone', 'crystal halbred']
Please tell me your name brave soul. :> Ray
Lets now randomly generate brave gladiator Ray.
[ 'Name: Ray:',
'Gender: Male',
'Character Class: Warrior',
'Strength: 11',
'Dexterity: 7',
'Constitution: 8',
'Damage 1D6',
'Crit Chance 10%',
'Hit Points: 6/6']
Please Press Enter To Buy A Weapon
Please type in the weapon you want to buy.
short sword, price: 1 gold pieces
club, price: 1 gold pieces
dagger, price: 1 gold pieces.
:> dagger
Your current weapon is now a dagger. Press Enter To Continue
Type in the weapon you want to buy, type quit to return to the barracks.
sword, price: 3 gold pieces
mace, price: 4 gold pieces
rapier, price: 5 gold pieces.
:> sword
Traceback (most recent call last):
File "lodarena.py", line 399, in <module>
character_gen()
File "lodarena.py", line 394, in character_gen
buy_weapon(level_one_weapons)
File "lodarena.py", line 144, in buy_weapon
character_sheet.remove(current_weapon)
ValueError: list.remove(x): x not in list
Raymond-Weisss-MacBook-Pro:lodarena Raylug$
在没有看到更多代码的情况下，我无法确定，但问题似乎是，当您添加武器时，您正在执行
角色表.append（“当前武器%s”%Current\u武器）角色表.remove（当前武器）如果您只是想解决这个问题，那么您需要使要删除的字符串与列表中的字符串以某种方式匹配。或者将不同的内容放入列表中（只需
当前\u当前的武器数据。没有看到更多的代码，我不能肯定，但问题似乎是，当你添加武器时，你正在执行字符表.append(“当前武器%s”%Current\u武器）
，但稍后您将尝试角色表。删除（当前武器）
第一个操作将向列表中添加一个字符串，看起来像“当前武器匕首”。第二个操作将尝试从列表中删除字符串“匕首”。但确切的字符串“匕首”不在列表中--“当前武器匕首”在列表中。因此Python正在崩溃，因为它被告知要删除“匕首”从列表中，但它找不到它-它只能找到不匹配的“当前武器匕首”
有很多方法可以解决这个问题，因为您的代码有很多奇怪的地方，大概是因为您正在努力学习Python的各个部分，而且您还没有学会如何将代码概括为函数，关于“不要重复自己”原则（所有这些if/elif/elif块基本上都在做相同的事情，这就是“重复你自己”），以及如何将数据存储在适当的数据结构中
我建议你继续学习这些课程，把这个项目放在一边，然后，如果你以后还对它感兴趣的话，经常参考它，看看如何在学习的过程中应用你学到的新东西。每隔几节课你就会学到一些新东西，可以简化这个代码——例如，使用对象而不是字符串r武器；仅在查看时将输出格式化为人类可读的文本，而不是在存储时；将字符表转换为对象或字典而不是列表；使用if/elif/elif块仅用于比较，并将从字符表添加和删除武器的业务逻辑概括为一个函数。
如果您只是想解决这个问题，那么您需要使要删除的字符串与列表中的字符串以某种方式匹配。或者将不同的内容放入列表中（只需当前\u
而不是较长的字符串）或者实际上搜索更长的字符串本身。或者你可以简单地删除列表中的最后一项，如果你确定这将是当前的武器数据。你购买武器的方法在哪里？请发布相关代码。你的前两个代码看起来很相似。有什么区别吗？我现在将包括所有购买武器的方法。在哪里是你的购买武器方法吗？请发布相关代码。你的前两个代码看起来很相似。有什么区别吗？我现在将包括我所有的购买武器方法。所以你的意思是，如果我想让它在角色表中工作。删除（“当前武器%s”%Current武器）将使它工作，对吗？我会
# Doing Stuff for weapons and the shopkeeper. #################################
def level_zero_price():
"""Generates the price for level one weapons"""
return randint(1, 3)
def level_one_price():
"""Generates the price for level two weapons"""
return randint(3, 6)
def level_two_price():
"""Generates the price for level three weapons"""
return randint(6, 9)
def level_three_price():
"""Generates the price for level four weapons"""
return randint(9, 12)
def level_four_price():
"Generates the price for level four weapons"""
return randint(12, 15)
### Major Buying Stuff / Inventory Code ##########################################
def buy_weapon(weapons):
"""big bit of code that allows you to buy a weapons from a weapon list.
The function acts a little differently after level zero weapons"""
global current_weapon
if weapons == level_zero_weapons:
sword_price = level_zero_price()
blunt_price = level_zero_price()
agile_price = level_zero_price()
print t.bright_yellow_on_magenta + """
Please type in the weapon you want to buy.
%s, price: %d gold pieces
%s, price: %d gold pieces
%s, price: %d gold pieces.
""" % (weapons[0], sword_price, weapons[1], blunt_price,weapons[2],
agile_price)
weapon_choice = raw_input(":> ")
if weapons[0] in weapon_choice:
current_weapon = weapons[0]
inventory(weapons[0])
character_sheet.append("Current Weapon %s" % current_weapon)
elif weapons[1] in weapon_choice:
current_weapon = weapons[1]
inventory(weapons[1])
character_sheet.append("Current Weapon %s" % current_weapon)
elif weapons[2] in weapon_choice:
current_weapon = weapons[2]
inventory(weapons[2])
character_sheet.append("Current Weapon %s" % current_weapon)
else:
print "I dont know what %s means" % weapon_choice
buy_weapon(level_zero_weapons)
elif weapons == level_one_weapons:
sword_price = level_one_price()
blunt_price = level_one_price()
agile_price = level_one_price()
print"""
Type in the weapon you want to buy, type quit to return to the barracks.
%s, price: %d gold pieces
%s, price: %d gold pieces
%s, price: %d gold pieces.
""" % (weapons[0], sword_price, weapons[1], blunt_price, weapons[2],
agile_price)
weapon_choice = raw_input(":> ")
if weapons[0] in weapon_choice:
character_sheet.remove(current_weapon)
current_weapon = weapons[0]
inventory(weapons[0])
character_sheet.append("Current Weapon %s" % current_weapon)
elif weapons[1] in weapon_choice:
character_sheet.remove(current_weapon)
current_weapon = weapons[1]
inventory(weapons[1])
character_sheet.append("Current Weapon %s" % current_weapon)
elif weapons[2] in weapon_choice:
character_sheet.remove(current_weapon)
current_weapon = weapons[2]
inventory(weapons[2])
character_sheet.append("Current Weapon %s" % current_weapon)
else:
print "I dont know what %s means" % weapon_choice
buy_weapon(level_one_weapons)
elif weapons == level_two_weapons:
sword_price = level_two_price()
blunt_price = level_two_price()
agile_price = level_two_price()
print"""
Type in the weapon you want to buy, type quit to return to the barracks.
%s, price: %d gold pieces
%s, price: %d gold pieces
%s, price: %d gold pieces.
""" % (weapons[0], sword_price, weapons[1], blunt_price,weapons[2],
agile_price)
weapon_choice = raw_input(":> ")
if weapons[0] in weapon_choice:
character_sheet.remove(current_weapon)
current_weapon = weapons[0]
inventory(weapons[0])
character_sheet.append("Current Weapon %s" % current_weapon)
elif weapons[1] in weapon_choice:
character_sheet.remove(current_weapon)
current_weapon = weapons[1]
inventory(weapons[1])
character_sheet.append("Current Weapon %s" % current_weapon)
elif weapons[2] in weapon_choice:
character_sheet.remove(current_weapon)
current_weapon = weapons[2]
inventory(weapons[2])
character_sheet.append("Current Weapon %s" % current_weapon)
else:
print "I dont know what %s means" % weapon_choice
buy_weapon(level_two_weapons)
elif weapons == level_three_weapons:
sword_price = level_three_price()
blunt_price = level_three_price()
agile_price = level_three_price()
print"""
Type in the weapon you want to buy, type quit to return to the barracks.
%s, price: %d gold pieces
%s, price: %d gold pieces
%s, price: %d gold pieces.
""" % (weapons[0], sword_price, weapons[1], blunt_price,weapons[2],
agile_price)
weapon_choice = raw_input(":> ")
if weapons[0] in weapon_choice:
character_sheet.remove(current_weapon)
current_weapon = weapons[0]
inventory(weapons[0])
character_sheet.append("Current Weapon %s" % current_weapon)
elif weapons[1] in weapon_choice:
character_sheet.remove(current_weapon)
current_weapon = weapons[1]
inventory(weapons[1])
character_sheet.append("Current Weapon %s" % current_weapon)
elif weapons[2] in weapon_choice:
character_sheet.remove(current_weapon)
current_weapon = weapons[2]
inventory(weapons[2])
character_sheet.append("Current Weapon %s" % current_weapon)
else:
print "I dont know what %s means" % weapon_choice
buy_weapon(level_three_weapons)
elif weapons == level_four_weapons:
sword_price = level_four_price()
blunt_price = level_four_price()
agile_price = level_four_price()
print"""
Type in the weapon you want to buy, type quit to return to the barracks.
%s, price: %d gold pieces
%s, price: %d gold pieces
%s, price: %d gold pieces.
""" % (weapons[0], sword_price, weapons[1], blunt_price,weapons[2],
agile_price)
weapon_choice = raw_input(":> ")
if weapons[0] in weapon_choice:
character_sheet.remove(current_weapon)
current_weapon = weapons[0]
inventory(weapons[0])
character_sheet.append("Current Weapon %s" % current_weapon)
elif weapons[1] in weapon_choice:
character_sheet.remove(current_weapon)
current_weapon = weapons[1]
inventory(weapons[1])
character_sheet.append("Current Weapon %s" % current_weapon)
elif weapons[2] in weapon_choice:
character_sheet.remove(current_weapon)
current_weapon = weapons[2]
inventory(weapons[2])
character_sheet.append("Current Weapon %s" % current_weapon)
else:
print "I dont know what %s means" % weapon_choice
buy_weapon(level_four_weapons)
else:
print"~~~There is a bug somwhere, forgot to assign (weapons)\n\n\n"
raw_input(t.white_on_red("""
Your current weapon is now a %s. Press Enter To Continue
""" % current_weapon))