python-将字符串中的单个单词匹配到字典键

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嗨,我正在尝试输入一个字符串,然后将字符串拆分成单个单词.字符串中以及“内容”的词典关键字中的唯一词从词典“文件”中检索相应的值.

如何拆分输入字符串以对照字典的“概念”键检查单个单词,并在可能的情况下返回字符串中的单词,而不返回字典的键？

我试图将字符串拆分成一个列表,然后将列表值直接传递到字典中,但是我很快就迷路了(那些是顶部注释掉的变量.感谢您的帮助.谢谢.

def concept(word):

# convert var(word) to list
#my_string_list=[str(i) for i in word]

# join list(my_string_list) back to string
#mystring = ''.join(my_string_list)

# use this to list python files
files    = {1:"file0001.txt",
            2:"file0002.txt",
            3:"file0003.txt",
            4:"file0004.txt",
            5:"file0005.txt",
            6:"file0006.txt",
            7:"file0007.txt",    
            8:"file0008.txt",
            9:"file0009.txt"}

# change keys to searchable simple keyword phrases. 
concepts = {'GAMES':[1,2,4,3,3],
            'BLACKJACK':[5,3,5,3,5],
            'MACHINE':[4,9,9,9,4],
            'DATABASE':[5,3,3,3,5],
            'LEARNING':[4,9,4,9,4]}

# convert to uppercase, search var(mystring) in dict 'concepts', if not found return not found"
if word.upper() not in concepts:
    print("{}: Not Found in Database" .format(word)) not in concepts
    return

# for matching keys in dict 'concept' list values in dict 'files'
for pattern in concepts[word.upper()]:
    print(files[pattern])


# return input box at end of query        
while True:
    concept(input("Enter Concept Idea: "))
    print("\n")

解决方法:

假设输入是用空格分隔的单词列表,则可以执行以下操作：

def concept(phrase):

    words = phrase.split()

    # use this to list python files
    files = {1: "file0001.txt",
             2: "file0002.txt",
             3: "file0003.txt",
             4: "file0004.txt",
             5: "file0005.txt",
             6: "file0006.txt",
             7: "file0007.txt",
             8: "file0008.txt",
             9: "file0009.txt"}

    # change keys to searchable simple keyword phrases.
    concepts = {'GAMES': [1, 2, 4, 3, 3],
                'BLACKJACK': [5, 3, 5, 3, 5],
                'MACHINE': [4, 9, 9, 9, 4],
                'DATABASE': [5, 3, 3, 3, 5],
                'LEARNING': [4, 9, 4, 9, 4]}

    for word in words:
        # convert to uppercase, search var(mystring) in dict 'concepts', if not found return not found"
        if word.upper() not in concepts:
            print("{}: Not Found in Database".format(word))
        else:
            # for matching keys in dict 'concept' list values in dict 'files'
            for pattern in concepts[word.upper()]:
                print(files[pattern])

concept("games blackjack foo")

输出量

file0001.txt
file0002.txt
file0004.txt
file0003.txt
file0003.txt
file0005.txt
file0003.txt
file0005.txt
file0003.txt
file0005.txt
foo: Not Found in Database

行词= statement.split()在空格处分割字符串词组.要检查字典中是否有单词,您需要一次执行一个单词,因此单词中的单词循环遍历了短语中的单词.

进一步

> How can I check if a key exists in a dictionary?
> Split a string by a delimiter in python

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