python 中break 和continue

break:直接跳出循环

while True:
    a=input('input a num:')
    if a==1:
        break
    else:
        pass
    print("in the while")

print('finish!')

输出：
input a num:1
finish!

continue：继续向下执行

judge=True
while judge:
    a=input('input a num:')
    if a==1:
        judge=False
    else:
        pass
    print("in the while")

print('finish!')

输出：
input a num:1
in the while
finish!

judge=True
while judge:
    a=input('input a num:')
    if a==1:
        continue
    else:
        pass
    print("in the while")

print('finish!')

input a num:1 #输入1，继续输入
input a num:2 #输入的不是1，pass,print 执行完后，继续while
in the while
input a num: