Python语句

while循环

实例:

count = 0

while (count < 9):

    print('The count is:' , count)

    count = count + 1

print("Good bye!")

break语句

实例：

a = 8

while a:

    if a % 2 == 0:

        break

    else:

        print("%d is add number" % a)

print("%d is even number" % a)

continue语句

实例：

a = 9

while a:

    if a % 2 == 0:

        a -= 1

        continue

    else:

        print("%d is odd number" % a)

        a -= 1

while else语句

实例：

count = 0

while count <5:

    print(count,"is less than 5")

    count = count +1

else:

    print(count,"is not less than 5")

for else 语句

实例：

from math import sqrt

for n in range(99,1,-1):

    root = sqrt(n)

    if root == int(root):

        print(n)

        break

    else:

        print("Nothing.")