课程10循环语句与注释

Posted 2021-02-03 wanguku

while循环

#当某个条件成立后，持续循环
#while 条件：
    #循环语句（循环体）
‘‘‘
def sumSum(star,end,step):
    i = star
    sum = 0
    while i<=end:
        sum += i
        i += step
    return sum
print(sumSum(1,10,1))
‘‘‘
#死循环，内存填充，监控异常等用处
‘‘‘
while True:
    pas = input(‘请输入密码：‘)
    if pas == ‘123‘:
        print(‘输入密码正确！‘)
        break
    print(‘你输入的密码错误！‘)
‘‘‘

for循环

#for循环
nameList = [‘milk‘,‘jack‘,‘mary‘]
index = 0
while index < len(nameList):
    print(nameList[index])
    index += 1
print(‘for循环：‘)
for name in nameList:#遍历循环
    print(name)
for name in range(0,len(nameList)):
    print(nameList[name])
for one in range(1,10):#遍历循环数值
    print(one)

break语句

跳出本层循环语句！

continue语句

结束本次循环！

注释

#、‘’‘内容’‘’、ctrl+/

def sum():
    ‘‘‘
    备注信息
    ‘‘‘
    return 1
print(sum.__doc__)