现在你已经学了 if, else, 和 elif ， 你就可以开始创建包含条件判断的脚本了。

这节的脚本中，你将需要向用户提问，依据用户的答案来做出决定。把脚本写下来，多多鼓捣一阵子，看看它的工作原理是什么。

编辑以下内容：

print "You enter a dark room with two doors.Do you go through door #1 or door #2?"

door = raw_input(">")

if door == "1":
    print "There's a giant bear here eating a cheese cake. What do you do?"
    print "1.Take the cake."
    print "2.Scream at the bear."
    
    bear = raw_input(">")
    
    if bear == "1":
        print "The bear eats your face off.Good job!"
    elif bear == "2":
        print "The bear eats your legs off.Good job!"
    else:
        print "Well,doing %s is probably better.Bear runs away."%bear
        
elif door == "2":
    print "You stare into the endless abyss at Cthulhu's retina."
    print "1.Blueberries."
    print "2.Yellow jacket clothespins."
    print "3.Understanding revolvers yelling melodies."
    
    insanity = raw_input(">")
    
    if insanity == "1" or insanity == "2" :
        print "Your body survives powered by a mind of jello.Good job!"
    else:
        print "The insanity rots your eyes into a pool of muck.Good job!"
        
else:
    print "You stumble around and fall on a knife and die.Good job!"                   

会看到如下结果：

 这里的重点是你可以在“if 语句”内部再放一个“if 语句”。这是一个很强大的功能，可以用来创建嵌 套 (nested) 的决定，其中的一个分支将引向另一个分支的子分支。