from sys import exit
from random import randint

def death():
    quips = ["Your died. You kinda suck at this.",
            "Nice job, you died ...jackass.",
            "Such a luser.",
            "I have a small puppy that's better at this"]
    print (quips[randint(0, len(quips)-1)])
    exit(1)

def central_corridor():
    print ("The Gothnons of Planet Percal #25 have invaded yourship and destroyed")
    print ("Your entire crew. You are the last surviving menber and your last")
    print ("mission is to get the neutron destruct bomb from the Weapons Armory,")
    print ("Put it in the bridge, and blow the ship uo after getting into an ")
    print ("ecape pod.")
    print ("\n")
    print ("Your are runing down the central corridor to the Weapons Armory when")
    print ("a Gothon jumps out, red scaly skin, dark grimy teeth, and evil clown costume")
    print ("flowing around his hate filled body. He's blocking the door to the")
    print ("Armory and about to pull a weapon to blast you.")

    action = input("> ")

    if action == "Shoot!":

        print ("Quick on the draw you yank out your blaster and fire it at the Gothon.")
        print ("His clown costume is flowing and moving around his body, which throws")
        print ("off your aim. Your laser hits his costume but missed him entirely. This")
        print ("completely ruins his brand new costume his mother bought him, which")
        print ("makes him fly into an insane rage and blast you repeatedly in the face until")
        print ("you are dead. Then he eats you.")
        return 'death'

    elif action == "dodge!":
        print ("Like a world class boxer you dodge, weave, slip and slide right")
        print ("as the Gothon's blaster cranks a laser past your head.")
        print ("In the middle of your artful dodge your foot slips and you")
        print ("bang your head on the metal wall and pass out.")
        print ("You wake up shortly after only to die as the Gothon stomps on")
        print ("your head and eats you.")
        return 'death'

    elif action == "tell ajoke":
        print ("Lucky for you they made you learn Gothon insults in the academy.")
        print ("You tell the one Gothon joke you know:")
        print ("Lbhe zbgure vf fb sng, jura fur fvgf nebhaq gurubhfr, fur fvgf nebhaq gur ubhfr.")
        print ("The Gothon stops, tries not to laugh, then busts out laughing and can't move.")
        print ("While he's laughing you run up and shoot him square in the head")
        print ("putting him down, then jump through the Weapon Armory door.")
        return 'laser_weapon_armory'

    else:
        print ("DOES NOT COMPUTE!")
        return ('central_corridor')

def laser_weapon_armory():
    print ("You do a dive roll into the Weapon Armory, crouch and scan the room")
    print ("for more Gothon that might be hiding. It's dead quiet, too quiet.")
    print ("You stand up and run the far side of the room and find the")
    print ("neutron bomb in its container. There's a keypad lock on the box")
    print ("and you need the code to get the bomb out. If you get the code")
    print ("wrong 10 times then the lock closes forever and you can't")
    print ("get the bomb. The code is 3 digits.")

    code = "%d%d%d" %(randint(1,9), randint(1,9),randint(1,9))

    guess = input("[keypad]> ")
    guesses = 0

    while guess !=code and guesses < 10:
        print ("BZZZZEDDD!")
        guesses += 1
        guess = input("[keypad]> ")

    if guess == code:
        print ("The container clicks open and the seal breaks, letting gas out.")
        print ("You grab the neutron bomb and run as fast as you can to the")
        print ("bridge where you must place it in the right spot.")
        return 'the_bridge'

    else:
        print ("The lock buzzes one last time and then you hear a sickening")
        print ("melting sound as the mechanism is fused together.")
        print ("You decide to sit there, and finally the Gothons blow up the")
        print ("ship from their ship and you die.")
        return 'death'

def the_bridge():
    print ("You burst onto the Bridge with the neutron destruct bomb")
    print ("under your arm and surprise 5 Gothons who are trying to")
    print ("take control of the ship.  Each of them has an even uglier")
    print ("clown costume than the last.  They haven't pulled their")
    print ("weapons out yet, as they see the active bomb under your")
    print ("arm and don't want to set it off.")

    action = input("> ")

    if action == "throw the bomb":
        print("In a panic you throw the bomb at the group of Gothons")
        print ("and make a leap for the door.  Right as you drop it a")
        print ("Gothon shoots you right in the back killing you.")
        print ("As you die you see another Gothon frantically try to disarm")
        print ("the bomb. You die knowing they will probably blow up when")
        print ("it goes off.")
        return 'death'

    elif action == "slowly place the bomb":
        print ("You point your blaster at the bomb under your arm")
        print ("and the Gothons put their hands up and start to sweat.")
        print ("You inch backward to the door, open it, and then carefully")
        print ("place the bomb on the floor, pointing your blaster at it.")
        print ("You then jump back through the door, punch the close button")
        print ("and blast the lock so the Gothons can't get out.")
        print ("Now that the bomb is placed you run to the escape pod to")
        print ("get off this tin can.")
        return 'escape_pod'

    else:
        print ("DOES NOT COMPUTE!")
        return "the_bridge"

def escape_pod():
    print ("You rush through the ship desperately trying to make it to")
    print ("the escape pod before the whole ship explodes.  It seems like")
    print ("hardly any Gothons are on the ship, so your run is clear of")
    print ("interference.  You get to the chamber with the escape pods, and")
    print ("now need to pick one to take.  Some of them could be damaged")
    print ("but you don't have time to look.  There's 5 pods, which one")
    print ("do you take?")

    good_pod = randint(1,5)
    guess = input("[pod #]> ")

    if int(guess) != good_pod:
        print ("You jump into pod %s and hit the eject button." % guess)
        print ("The pod escapes out into the void of space, then")
        print ("implodes as the hull ruptures, crushing your body")
        print ("into jam jelly.")
        return 'death'

    else:
        print ("You jump into pod %s and hit the eject button." % guess)
        print ("The pod easily slides out into space heading to")
        print ("the planet below.  As it flies to the planet, you look")
        print ("back and see your ship implode then explode like a")
        print ("bright star, taking out the Gothon ship at the same")
        print ("time.  You won!")
        eixt(0)

ROOMS = {
    'death': death,
    'central_corridor' : central_corridor,
    'laser_weapon_armory' : laser_weapon_armory,
    'the_bridge' : the_bridge,
    'escape_pod' : escape_pod
}

def runner(map, start):
    next = start

    while True:
        room = map[next]
        print ("\n--------")
        next = room()

runner(ROOMS, 'central_corridor')

①from sys import exit 從sys模組中引入exit即退出功能

退出程序的方式有兩種：os._exit()霍掺， sys.exit()

1）os._exit() 直接退出 python程序，其后的代碼也不會繼續(xù)執(zhí)行。

2）sys.exit() 引發(fā)一個(gè) SystemExit異常，若沒有捕獲這個(gè)異常帆喇，Python解釋器會直接退出筑煮；捕獲這個(gè)異常可以做一些額外的清理工作色罚。0為正常退出，其他數(shù)值（1-127）為不正常账劲，可拋異常事件供捕獲戳护。

exit() 跟 C 語言等其他語言的 exit() 應(yīng)該是一樣的。

os._exit() 調(diào)用 C 語言的 _exit() 函數(shù)瀑焦。

一般來說os._exit() 用于在線程中退出 sys.exit() 用于在主線程中退出腌且。

②from random import randint 從random模組中引入randint即產(chǎn)生隨機(jī)整型數(shù)
Python中的random模塊用于生成隨機(jī)數(shù)。下面介紹一下random模塊中最常用的幾個(gè)函數(shù)榛瓮。

random.random
random.random()用于生成一個(gè)0到1的隨機(jī)符點(diǎn)數(shù): 0 <= n < 1.0

random.uniform
random.uniform的函數(shù)原型為：random.uniform(a, b)铺董，用于生成一個(gè)指定范圍內(nèi)的隨機(jī)浮點(diǎn)數(shù)，兩個(gè)參數(shù)其中一個(gè)是上限禀晓，一個(gè)是下限柄粹。如果a > b，則生成的隨機(jī)數(shù)n: a <= n <= b匆绣。如果 a < b驻右， 則 b <= n <= a。

random.randint
random.randint()的函數(shù)原型為：
random.randint(a, b)崎淳，用于生成一個(gè)指定范圍內(nèi)的整數(shù)堪夭。其中參數(shù)a是下限，參數(shù)b是上限拣凹，生成的隨機(jī)數(shù)n: a <= n <= b

printrandom.randint(20,10)#該語句是錯誤的森爽。下限必須小于上限。

random.randrange
random.randrange的函數(shù)原型為：random.randrange([start], stop[, step])嚣镜，從指定范圍內(nèi)爬迟，按指定基數(shù)遞增的集合中 獲取一個(gè)隨機(jī)數(shù)。
如：random.randrange(10, 100, 2)菊匿，結(jié)果相當(dāng)于從[10, 12, 14, 16, … 96, 98]序列中獲取一個(gè)隨機(jī)數(shù)付呕。random.randrange(10, 100, 2)在結(jié)果上與 random.choice(range(10, 100, 2) 等效计福。

random.choice
random.choice從序列中獲取一個(gè)隨機(jī)元素。其函數(shù)原型為：random.choice(sequence)徽职。參數(shù)sequence表示一個(gè)有序類型象颖。這里要說明一下：sequence在python不是一種特定的類型，而是泛指一系列的類型姆钉。list, tuple, 字符串都屬于sequence说订。有關(guān)sequence可以查看python手冊數(shù)據(jù)模型這一章。下面是使用choice的一些例子：

random.shuffle 　
random.shuffle的函數(shù)原型為：random.shuffle(x[, random])潮瓶，用于將一個(gè)列表中的元素打亂陶冷。
如:p=[“Python”,”is”,”powerful”,”simple”,”andsoon…”]

random.shuffle(p)
print p

random.sample
random.sample的函數(shù)原型為：random.sample(sequence, k)，從指定序列中隨機(jī)獲取指定長度的片斷毯辅。sample函數(shù)不會修改原有序列埂伦。

如：list=[1,2,3,4,5,6,7,8,9,10]
slice=random.sample(list,5)#從list中隨機(jī)獲取5個(gè)元素，作為一個(gè)片斷返回到slice