对于循环在一次迭代后结束

Question

So I had this original piece of code to replace words in a "fill in the blanks" game for aa python class I'm taking:

while victory == False:
    round0 = ''
    round1 = ''
    round2 = ''
    round3 = ''
    round4 = ''
    round5 = ''
    answerx = listchange()
    while round0 != answerx[0]:
        print ''.join(glvl)
        round0 = raw_input('What word is ___(0)___? ')
    while round1 != answerx[1]:
        print ''.join(num_replace(glvl,0))
        round1 = raw_input('What word is ___(1)___? ')
    while round2 != answerx[2]:
        print ''.join(num_replace(num_replace(glvl,0),1))
        round2 = raw_input('What word is ___(2)___? ')
    while round3 != answerx[3]:
        print ''.join(num_replace(num_replace(num_replace(glvl,0),1),2))
        round3 = raw_input('What word is ___(3)___ ')
    print ''.join(num_replace(num_replace(num_replace(num_replace(glvl,0),1),2),3))
    print 'Congratulations!'
    victory = True

It was rejected because it only applies to four blanks in the question and my code should work no matter how many blank spots are in it.

So now I've been working on remaking it and been having a lot of trouble. Here is my most successful attempt so far:

for i in glvl:
    glvlstr = ''.join(glvl)
    answerx = listchange()
    counter = 0
    if i == blank_list[counter]:
        print glvlstr
        askq = raw_input('What word is ' + i + '? ')
        if askq == answerx:
            glvl[i] = askq
            glvlstr = ''.join(glvl)
    counter += 1

It starts fine and runs this:

Please select a difficulty level: easy, normal, hard, maximum-carnage, bonus-level: easy
In ___(0)___ if you want to pass the W3 ___(1)___ make sure you ___(2)___ your ___(3)___!
What word is ___(0)___? HTML

But at that point it just quits. It should then print out:

In HTML if yuou want to pass the W3 ___(1)___ make sure you ___(2)___ your ___(3)___!
What word is ___(1)___? 

and then cycle through word by word replacing them until it is done.

Answer 1

You set counter to zero, check the if statement, then increment the counter. But on the next iteration you reset counter to zero, so the if is always checking for counter = 0. Initialize counter before the for loop. Seems like this might be your problem.

Answer 2

As you are incrementing counter for every iteration, you can clean it us a bit as follows

for counter,i in enumerate(glvl):
    # glvlstr = ''.join(glvl) unnecessary
    answerx = listchange() # what does this do?
    if i == blank_list[counter]:
        print ''.join(glvl)
        askq = raw_input('What word is ' + i + '? ')
        if askq == answerx:
            glvl[i] = askq
            # glvlstr = ''.join(glvl) unnecessary