python学习2

1.raw_input函数

name=raw_input("what is your name?")age=raw_input("how old are you?")print name +"is" +age

2.if语句

hasBiscuits=raw_input("do you have a biscuits???")if hasBiscuits=="yes":    print "it seems very delicious!"#必须要空四个空格，或者一个tabelse:    print"you have trick me！！！"

嵌套式if语句：

hasBiscuits=raw_input("do you have a biscuits???")if hasBiscuits=="yes":    print "it seems very delicious!"    canHave=raw_input("can you give some for me ?")    if canHave=="yes" :        print "thank your!!"#注意四个空格问题！    else :        print "I am angry!"else:    print"you have trick me！！！"

elif：elif是else if 的缩写形式，是与if语句并列的语句。

hasBiscuits=raw_input("do you have a biscuits???")if hasBiscuits=="yes":    print "it seems very delicious!"    canHave=raw_input("can you give some for me ?")    if canHave=="yes" :        print "thank your!!"    else :        print "I am angry!"elif hasBiscuits== "no":    print"you have trick me！！！"elif hasBiscuits=="donnot know":    print "are you foolish?"else:    print "hehe......"

3.while循环语句

username=raw_input("what is your name?")message=raw_input("please input your message!")while message!="exit":    print username + ":" +message    message=raw_input("please input your message!")

注意：
在判断语句中，等于用==，不等于用！=；
while语句还是if语句都不用括号，直接
while a==b ：
。。。
。。。

无限循环的while：

while True :    print "you are great!!!"

4.if,elif,while综合实验

again="yes"while again == "yes":    praiseType=raw_input("select a type you like \n a:personality \n b:appearence \n c:intellengence \n")    if praiseType == "a":        print "you are human!"    elif praiseType == "b":        print "you are pretty"    elif praiseType == "c":        print "you seems clever!"    else:        print "you are wrong!please choose annother"    again = raw_input ("do you want go on? input yes or no!")

5.飞船实验

"""使用if，elif，else和while语句以及函数raw_input()和语句print综合实验。实验的目的是制造一个车，该车辆专属于司机，必须输入正确的密码才能进行下一步的操作！车辆有几个功能，行驶到某个目的地、攻击、自爆。。。"""import timename="CC"password="12345"attemPass=raw_input("please input the password!")while attemPass != password:    print "your password is false!\n"    attemPass=raw_input("please input the password again:")print "welcome  " + name +"!!!!"service="yes"while service == "yes":    choose=raw_input("please choose a function:\n a:go to a distination \n b:attack \n c:boom \n")    if choose == "a":        distination=raw_input("where you want to go???")        time.sleep(5)        print distination + "is arrived!"    elif choose == "b":        print "attacking.....\n"        time.sleep(2)        print "over!!!"    elif choose == "c":        print "i will boom in 5 minutes....\n"        time.sleep(1)        print '5...........\n'        time.sleep(1)        print '4..........\n'        time.sleep(1)        print '3......\n'        time.sleep(3)        print 'boom..........\n'    else :        print "your are wrong!"        choose = raw_input("please input again!")    service = raw_input("task is over,do you want another service? yes/no")