Question

这是我的第一个小项目和第一个问题，对于格式化很抱歉。我有两个包含食谱名称的列表作为字符串。我想问用户他们想要的每个列表中有多少餐，然后随机选择。

然后，我想检查选择是否选择了一顿饭，并显示我将存储在一个变量中的膳食价格。

我的想法是将随机样本添加到新列表中，并通过if in语句检查内容。如果配方在新列表中，那么它将打印包含价格的变量。

但是，当我检查配方的新列表时，它并不认为它在列表中。有没有我错过的东西或更好的方法吗？谢谢。

到目前为止我的代码：

import random
Vegetarian = ["Jungle Curry", "Chickpea Curry", "Dhal", "Buddha Bowl", 
"Chickpea Salad", "Lazy Noodles", "Fry Up"]
Meat = ["Chilli", "Butter Chicken", "Lamb and Hummus"]

v = int(raw_input("How many vegetarian meals this week? > "))
m = int(raw_input("How many meaty meals? > "))

Veg1 = random.sample(Vegetarian, v)
Meat2 = random.sample(Meat, m)

veg_week = []
meat_week = []

veg_week.append(Veg1)
meat_week.append(Meat2)

jungle_curry = 10
chickpea_curry = 10

if "Jungle Curry" and "Chickpea Curry" in veg_week:
    print jungle_curry + chickpea_curry

Answer 1

你有几个错误，让我们来看看：

random.sample的结果是一个列表;当你打电话给veg_week.append（Veg1＆＃39;，你正在创建一个列表列表。
在此之后，您要将值10分配给jungle_curry和chickpea_curry
然后，您正在检查所选样本中是否"Jungle Curry"和"Chickpea Curry";也许你想逐一检查这些是否在本周的菜单中？

这应该更好：

import random

Vegetarian = ["Jungle Curry", "Chickpea Curry", "Dhal", "Buddha Bowl", 
"Chickpea Salad", "Lazy Noodles", "Fry Up"]
Meat = ["Chilli", "Butter Chicken", "Lamb and Hummus"]

v = int(input("How many vegetarian meals this week? > "))
m = int(input("How many meaty meals? > "))

Veg1 = random.sample(Vegetarian, v)
Meat2 = random.sample(Meat, m)

if "Jungle Curry" and "Chickpea Curry" in veg1:
    print(jungle_curry + chickpea_curry)

Answer 2

我会这样做的

import random

Vegetarian = ["Jungle Curry", "Chickpea Curry", "Dhal", "Buddha Bowl",
          "Chickpea Salad", "Lazy Noodles", "Fry Up"]
Meat = ["Chilli", "Butter Chicken", "Lamb and Hummus"]

v = int(raw_input("How many vegetarian meals this week? > "))
m = int(raw_input("How many meaty meals? > "))

Veg1 = random.sample(Vegetarian, v)
Meat2 = random.sample(Meat, m)

veg_week = []
meat_week = []

veg_week.append(Veg1)
meat_week.append(Meat2)

# put the prices of each in the list too 
Vegetarian_price = [10, 10, 10, 10, 10, 10, 10]
Meat_price = [20, 20, 20]

v_cost = 0
m_cost = 0
for i in range(len(Veg1)):
    v_cost += Vegetarian_price[Vegetarian.index(Veg1[i])]

for i in range(len(Meat2)):
    m_cost += Meat_price[Meat.index(Meat2[i])]

print v_cost,m_cost

在python中随机抽样检查

2 个答案: