Question

我必须编写一个包含四种不同文字游戏选项的程序。

其中一个选项是用户从字典文件中输入一定长度的单词，然后程序找到一个单词，其长度可以由美国50个州的缩写组成。

例如：如果用户输入6，则程序找到单词MARINE，其由5个缩写组成：MA（马萨诸塞州），AR（亚利桑那州），RI（罗德岛州），IN（印第安纳州）和NE （内布拉斯加）。

到目前为止，我有这个：

elif choice == "d":
    #wordlen = length of words user is looking for.
    wordlen = raw_input("Enter the length of words you are looking for: ")
    wordlen = int(wordlen)
    print wordlen

    states = ['AL','AK','AZ','AR','CA','CO','CT','DE','DC','FL','GA','HI',\
    'ID','IL','IN','IA','KS','KY','LA','ME','MD','MA','MI','MN','MS','MO','MT',\
    'NE','NV','NH','NJ','NM','NY','NC','ND','OH','OK','OR','PA','RI','SC','SD',\
    'TN','TX','UT','VT','VA','WA','WV','WI','WY']

    for line in file:
        line = line.strip()
        line = line.upper()

        if len(line) == wordlen:

我已经在整个循环的开头打开了字典文件（file = file.open（'dictionary.txt'）并使用了file.seek（0）然后当循环被打破时（当用户输入时） 'q'），file.close（），这样我就不必在每个程序中打开和关闭文件。

在我遇到用户输入的条件后，我不知道该怎么做。我已经尝试了一切，它没有给我预期的输出。请帮忙？这是我服用python的第一年，这对我来说非常困惑-__-

Answer 1

对于字典文件中具有正确长度的每一行（例如，匹配用户输入长度），您需要检查该单词中的每个连续字母对，以查看状态列表中是否出现。

for line in file:
    line = line.strip()
    line = line.upper()

    if len(line) == wordlen:

        # Set some counters/containers.
        pair_is_abbrev = 1 #<-- Marks true/false if pair is in abbrev list.
        cur_letter_indx = 0 #<-- Counts the location we're at in this line.

        # Loop until we find a two-letter sequence that's not an abbrev.
        # or until we hit the end of this line (the word length).
        while(pair_is_abbrev and cur_letter_indx <= wordlen-1):
            cur_pair = line[cur_letter_indx:(cur_letter_indx+2)] #<-- Get current two letters
            pair_is_abbrev = (cur_pair in states) #<-- Python way to check if that pair is in your list of abbrevs.
            cur_letter_indx = cur_letter_indx + 1 #<-- Increment the counter.

        # Once the loop terminates, pair_is_abbrev can only be true if we
        # made it all the way to the end of the line successfully. If so,
        # then we found an all-abbrevs word. Otherwise, move on to the next line.
        if(pair_is_abbrev):
            print "Found a word made of abbreviations that is the right length:"
            print line

简单的python程序，对我来说不容易

1 个答案: