python - 程序/循环仅部分工作

Question

我正在编写一个刽子手脚本，但它无法正常工作。在这个例子中，我使用“curiosities”这个词作为猜测的词，因为它有三个“i”。F(或者由于某种原因样式在 block 中很奇怪):

The desired output is "_ _ _ i _ _ i _ i _ _"
But I can only get to  "_ _ _ i _ _ i _ _ _ _"

这是代码的主要部分:

def alter(output_word, guessed_letter, the_word):
    checkword = the_word
    #print ("outputword:",output_word)
    previous = 0
    fully_checked = False
    current_count = 0
    while fully_checked == False:
        global add_number
        checkword = checkword[previous:]
        add_number = previous + add_number

        #print ("..",checkword)
        if guessed_letter in checkword:

            current_count = current_count + 1
            print (">>>",current_count)
            the_index = (checkword.index(guessed_letter))+add_number
          #  print (output_word)
           #  print (the_index)
           # print (guessed_letter)
            output_word= output_word[:the_index-1] + guessed_letter + output_word[the_index:]

            previous = the_index+1  
        else:
            fully_checked = True
            checkword = the_word
            add_number = 0
    print (' '.join(output_word))
    checklist(current_count)  

def checklist(current_count):
    print ("checklist")
    print (current_count)
    global total_count
    total_count = total_count + current_count
    print ("total count is", total_count)

代码中的其他地方触发这一切(the_word 是好奇心，guessed_letter 是 i):

if guessed_letter in the_word:
    alter(output_word, guessed_letter, the_word)

Answer 1

正如 Derorrist 指出的那样，您的代码逻辑中存在一些缺陷，主要的一个是您将 output_word 的索引与 checkword 的索引混淆了.

我已经修复了这些错误并稍微精简了您的代码。 add_number 不需要是全局变量，一般来说，除非确实需要，否则您应该避免使用可修改的全局变量，因为它们会破坏代码模块化。

total_count = 0

def alter(output_word, guessed_letter, checkword):
    previous = add_number = current_count = 0
    while True:
        checkword = checkword[previous:]
        if guessed_letter in checkword:
            the_index = checkword.index(guessed_letter)
            offset = the_index + add_number
            print(">>>", current_count, the_index, offset)
            output_word= output_word[:offset] + guessed_letter + output_word[offset + 1:]
            previous = the_index + 1
            add_number += previous
            current_count += 1
        else:
            break

    print(' '.join(output_word))
    checklist(current_count) 
    return output_word

def checklist(current_count):
    global total_count

    print("checklist")
    print(current_count)
    total_count += current_count
    print("total count is", total_count, end='\n\n')

# test

the_word = "curiosities"
output_word = "_" * len(the_word)
print(' '.join(output_word))

for guessed_letter in 'cisotrue':
    output_word = alter(output_word, guessed_letter, the_word)

输出

_ _ _ _ _ _ _ _ _ _ _
>>> 0 0 0
c _ _ _ _ _ _ _ _ _ _
checklist
1
total count is 1

>>> 0 3 3
>>> 1 2 6
>>> 2 1 8
c _ _ i _ _ i _ i _ _
checklist
3
total count is 4

>>> 0 5 5
>>> 1 4 10
c _ _ i _ s i _ i _ s
checklist
2
total count is 6

>>> 0 4 4
c _ _ i o s i _ i _ s
checklist
1
total count is 7

>>> 0 7 7
c _ _ i o s i t i _ s
checklist
1
total count is 8

>>> 0 2 2
c _ r i o s i t i _ s
checklist
1
total count is 9

>>> 0 1 1
c u r i o s i t i _ s
checklist
1
total count is 10

>>> 0 9 9
c u r i o s i t i e s
checklist
1
total count is 11

<小时/>

FWIW，有更简单、也更有​​效的方法来做到这一点。例如，here这是我前几天写的一对夫妇。