在python中循环该程序的最佳方法是什么？

Question

pyg = 'ay'

original = raw_input('Enter a word:')

if len(original) > 0 and original.isalpha():
    print original    
    word = original.lower()
    first = word[0]
    second = word[1]
    new_word = word + first + pyg  
    new_word = new_word[1:len(new_word)]
    print new_word
else:
    print 'empty'

I need this to loop and and when the user inputs 'Quit' with any combination of lower or capital letters. (qUit, QUIT, quIT, ie)

any tips are appreciated. Thanks.

Answer 1

Try something like this:

pyg = 'ay'
original = raw_input('Enter a word:')

while original and original.strip().upper() != 'QUIT':
    # loop body
    if len(original) > 0 and original.isalpha():
        print original    
        word = original.lower()
        first = word[0]
        second = word[1]
        new_word = word + first + pyg  
        new_word = new_word[1:len(new_word)]
        print new_word
    else:
        print 'empty'
    # read again, for next loop
    original = raw_input('Enter a word:')

Answer 2

try this

pyg = 'ay'

while True:

    original = raw_input('Enter a word:')

    if original.upper() == 'QUIT':
        break

    if len(original) > 0 and original.isalpha():
        print original    
        word = original.lower()
        first = word[0]
        second = word[1]
        new_word = word + first + pyg  
        new_word = new_word[1:len(new_word)]
        print new_word
    else:
        print 'empty'
        break

Answer 3

new_word = new_word[1:]

## it's better! #to split the first word

nom = 'AlassaneAli'

mylist = list()

for i in nom:

  mylist.append(i) 

for a in range(len(mylist)):

 print(mylist[a]) 

print(mylist[1:])