If语句和while语句

name = raw_input(‘>>>‘)

if name == "alex":
    print (‘yes‘)
else:
    print (‘no‘)

name = raw_input("username")
pwd = raw_input("password")
if name == "alex" and pwd == "123":
    print(‘yes‘)
else:

 print(‘no‘)

kaishi = 1
flag = True
while flag:
    print(kaishi)
    if kaishi == 10:
        flag = False
    kaishi = kaishi + 1
    time. sleep(1)
print(‘end‘)

start = 1
while True:
    if start == 7
        start += 1
        continue

    print(start)
    if start == 10
        break
    start += 1

sum = 0
start = 1
while True:
    sum = sum + start
    if start == 100:
        break
    start += 1
print(‘sum‘)

s = "alex SB"
ret = "SB" in s
print(‘ret)