Question

我似乎无法让我的代码正常工作。我确信有很多不同的方法可以让这段代码使用更少的行，但这是我现在可以在理解代码时编写代码的唯一方法。

当我使用500这样的最高费用和'b'作为desired_features时，我只能与斯卡伯勒一起返回，当我应该返回时：巴塞罗那，加利福尼亚，科孚岛，斯卡伯勒和惠特比，因为他们都有海滩和费用少于500。

print("INPUT:")

max_cost         = input( "How many coins do you want to? " )

print("""\nDesired holdiday features:
    b = beach
    c = culture
    h = hot
    m = mountains
""")


desired_features = input( "Enter string of first letters of desired features: " ) 

#barcelona
if (max_cost >="320" and desired_features == ("bch","b","c", "h", "bc", "bh", "cb", "ch", "hb", "hc" )): \
    destination_list = "Barcelona"
else:
    destination_list = []

print (destination_list)

#California
if (max_cost >="750" and desired_features == ("bhm" , "b", "h", "m", "bh", "bm", "hb", "hm", "mb", "mh" )):\
    destination_list = "California"
else:
    destination_list = []

print (destination_list)

#Corfu
if (max_cost >="300" and desired_features == ("bh", "b", "h", "hb")):\
    destination_list = "Corfu"
else:
    destination_list = []

print (destination_list)

#Paris
if (max_cost >="250" and desired_features == "c"): \
    destination_list = "Paris"
else:
    destination_list = []

print (destination_list)

#Rome
if (max_cost >="300" and desired_features == ("ch", "c", "h", "hc")): \
    destination_list = "Rome"
else:
    destination_list = []

print (destination_list)

#Scarborough
if (max_cost >="45" and desired_features == "b"): \
    destination_list = "Scarborough"
else:
    destination_list = []

print (destination_list)

#Switzerland
if (max_cost >="450" and desired_features == ("cm", "c", "m", "mc")): \
    destination_list = "Switzerland"
else:
    destination_list = []

print (destination_list)

#Whitby
if (max_cost >="60" and desired_features == ("bc", "c", "b", "bc")): \
    destination_list = "Whitby"
else:
    destination_list = []

print (destination_list)


#    holiday_data = [ ["Barcelona",   320,  ["beach", "culture", "hot"]],
#                 ["California",  750,  ["beach", "hot", "mountains"]],
#                 ["Corfu",       300,  ["beach", "hot"]],
#                 ["Paris",       250,  ["culture"]],
#                 ["Rome",        300,  ["culture", "hot"]],
#                 ["Scarborough",  45,  ["beach"]], 
#                 ["Switzerland", 450,  ["culture", "mountains"]],
#                 ["Whitby",       60,  ["beach", "culture"]]
#               ]

Answer 1

我不认为你的意思= =在你的海滩测试中等等，可能是“在”？：

if (max_cost >="300" and desired_features in ("ch", "c", "h", "hc"))

请注意，列表是使用括号而不是括号定义的，并使用“in”运算符，而不是==来确定字符串是否在列表中。

好吧，我不是一个古怪的人，只是更习惯于列出...如果你愿意，可以使用元组（上图）。

Answer 2

原因是因为你正在使用这个

if (max_cost >="45" and desired_features == "b")

它返回“Scarborough”，因为只有“Scarborough”具有“b”

的单一所需特征

例如，

 if (max_cost >="450" and desired_features in ("cm", "c", "m", "mc"))

编辑改为元组：）

Python 3没有读'如果正确的话

2 个答案: