你所不知道的python循环中的else

numbers= [1,2,3,4,5]

for nin numbers:

    if (n >5):

        print('the value is %d '%(n))

        break

else:

    print('the for loop does not end with break')

i= 0

while(numbers[i] <5):

    print('the index %d value is %d'%(i, numbers[i]))

    if (numbers[i] <0) :

        break

    i= i+ 1

else:

    print('the loop does not end with break')

numbers= [1,2,3,4,5]

for nin numbers:

    if (n >5):

        print('the value is %d '%(n))

        break

else:

    print('the for loop does not end with break')

i= 0

while(numbers[i] <5):

    print('the index %d value is %d'%(i, numbers[i]))

    if (numbers[i] <0) :

        break

    i= i+ 1

else:

    print('the loop does not end with break')

C:\Python27>python.exe for_else.py

thefor loop doesnot end withbreak

the index0 valueis 1

the index1 valueis 2

the index2 valueis 3

the index3 valueis 4

the loop doesnot end withbreak