Question

Python新手，使用Python 2.7。我正在创建一个程序，打印出随机配方及其成分和说明。我会在最后发布我的代码。我得到的输出是：

这是一个食谱（'寿司'，''金枪鱼'，'米饭'，'蛋黄酱'，'芥末'）


洗掉金枪鱼

但我想要这个：

这是一个食谱：寿司：金枪鱼，米饭，蛋黄酱，芥末


洗掉金枪鱼

我可以使用format（）方法来完成这样的事情吗？

这是我的代码：

import random

def random_recipe():
    recipe_dict = {'ChocolateCake':['flour', 'eggs', 'chocolate', 'oil', 'frosting'],
                   'Pasta':['noodles', 'marinara','onions'],
                   'Sushi':['tuna','rice','mayonnaise','wasabi']}


    print "Here is a recipe" + str(random.choice(list(recipe_dict.items())))

    if recipe_dict.keys() == 'ChocolateCake':
        print "1. Mix the flour with the eggs"
    elif recipe_dict.keys() == 'Pasta':
        print "1. Boil some water"
    else:
        print "1. Wash off the tuna"

Answer 1

您可以使用join()加入dict的值，如下例所示：

from random import choice

recipe_dict = {'ChocolateCake':['flour', 'eggs', 'chocolate', 'oil', 'frosting'],
                   'Pasta':['noodles', 'marinara','onions'],
                   'Sushi':['tuna','rice','mayonnaise','wasabi']}

# Or you can unpack your data:
# key, val = choice(recipe_dict.items())
keys = list(recipe_dict.keys())
random_key = choice(keys)
# Using str.format()
print "Here is a recipe: {}: {}".format(random_key, ', '.join(recipe_dict[random_key]))

if random_key == 'ChocolateCake':
    print "1. Mix the flour with the eggs"
elif random_key == 'Pasta':
    print "1. Boil some water"
else:
    print "1. Wash off the tuna"

Answer 2

由于您是从随机检索元组，请查找以下工作代码

import random

recipe_dict = {'ChocolateCake':['flour', 'eggs', 'chocolate', 'oil', 'frosting'],
               'Pasta':['noodles', 'marinara','onions'],
               'Sushi':['tuna','rice','mayonnaise','wasabi']}


ra_item = random.choice(list(recipe_dict.items()))
print  "Here is a recipe {}:{}".format(ra_item[0],','.join(ra_item[1]))

if recipe_dict.keys() == 'ChocolateCake':
    print "1. Mix the flour with the eggs"
elif recipe_dict.keys() == 'Pasta':
    print "1. Boil some water"
else:
    print "1. Wash off the tuna"

您将使用此代码获得预期的输出。

Answer 3

使用以下代码中的a替换recipe_dict：

for k, v in a.items():
    print( k + ': ' + ','.join(map(str, v)))

如何使用format（）格式化字典键和值

3 个答案: