python - 为什么我的代码找不到数组中存在的某个字符串？

Question

我正在编写一个类似于迷你文本冒险游戏的程序，但是我的代码似乎遇到了一些问题。我对整个编程还比较陌生，所以如果你能深入解释你的答案，那将会有很大的帮助。

代码如下:

#text_adventure_game.py
#python_ver == 3.5

verbs = ["get",
         "put",
         "drop",
         "use",
         "enter",
         "leave",
         "walk",
         "search",
         "attack",
         "defend"]

nouns = ["journal",
         "magnifier",
         "glasses",
         "knife",
         "kite",
         "table",
         "chair",
         "key"]

inventory = ""

user_input = input("What would you like to do?\n")

#checking if there are a set of two instructions
if(len(user_input.split())==2):
    counter = 0
    for token in user_input.split():
        print(token)
        print(counter)
        if(counter==0):
            if(token not in verbs):
                print("I did not understand the verb entered.")
                #removing square brackets and single quote marks from the array
                print("Please use:", ", ".join(verbs))
                counter = counter + 1
            elif(token in verbs):
                print("Recognized verb entered.")
                counter = counter + 1
        if(counter==1):
            if(token not in nouns):
                print("I did not understand the noun entered.")
                print("Please use:", ", ".join(nouns))
                counter = counter + 1
            elif(token in nouns):
                print("Recognized verb entered.")
                counter = counter + 1

我的问题是它无法识别我在“名词”数组中输入的名词。

这是它的编译方式:

>>> 
What would you like to do?
get journal
get
0
Recognized verb entered.
I did not understand the noun entered.
Please use: journal, magnifier, glasses, knife, kite, table, chair, key
journal
2

如果有更有效的方法来做这样的事情，那也会有所帮助。

谢谢。

Answer 1

不需要 for 循环和计数器。您可以更简单地执行以下操作:

verbs = ["get",
         "put",
         "drop",
         "use",
         "enter",
         "leave",
         "walk",
         "search",
         "attack",
         "defend"]

nouns = ["journal",
         "magnifier",
         "glasses",
         "knife",
         "kite",
         "table",
         "chair",
         "key"]

inventory = ""

user_input = input("What would you like to do?\n")

#checking if there are a set of two instructions
action, obj = user_input.split()

if(action not in verbs):
    print("I did not understand the verb entered.")
    print("Please use:", ", ".join(verbs))
else:
    print("Recognized verb entered.")

    if(obj not in nouns):
        print("I did not understand the noun entered.")
        print("Please use:", ", ".join(nouns))
    else:
        print("Recognized noun entered.")

如果想让失败后重复执行，可以将代码放在 while block 下。

无论如何，原始代码中的问题是，如果第一个动词正确，则必须插入继续:

verbs = ["get",
         "put",
         "drop",
         "use",
         "enter",
         "leave",
         "walk",
         "search",
         "attack",
         "defend"]

nouns = ["journal",
         "magnifier",
         "glasses",
         "knife",
         "kite",
         "table",
         "chair",
         "key"]

inventory = ""

user_input = input("What would you like to do?\n")

#checking if there are a set of two instructions
if(len(user_input.split())==2):
    counter = 0
    for token in user_input.split():
        print("1", token)
        print(counter)
        if(counter==0):
            if(token not in verbs):
                print("I did not understand the verb entered.")
                #removing square brackets and single quote marks from the array
                print("Please use:", ", ".join(verbs))
                counter = counter + 1
            elif(token in verbs):
                print("Recognized verb entered.")
                counter = counter + 1
                continue
        if(counter==1):
            if(token not in nouns):
                print("I did not understand the noun entered.")
                print("Please use:", ", ".join(nouns))
                counter = counter + 1
            elif(token in nouns):
                print("Recognized verb entered.")
                counter = counter + 1