『愚かな方法学PYTHON』——twenty-firstlesson

習題41:Percal 25号惑星からのゴートン人(Gothons)
前節に知識点があり、前節にも注釈しました

cities['_find'] = findCity
cityFound = cities['_find'](cities, state)

関数は変数としても使用できます.「def findCity」という文は、どこでも使用できる変数を作成します.このコードでは、まず関数findCityをcitiesの辞書に入れ、'_とマークします.find'.これは私たちが州と市を関連付けたコードと同じことですが、ここに関数の名前を置いただけです.
findCityが辞書に載っていることを知ったらfindの位置は、それを呼び出すことができることを意味します.
2行目のコードは、次のように分解できます.

PythonはcityFound=を見て変数を作成する必要があることを知った.

それからcitiesを読んで、それが辞書であることを知った.

で['_find']が表示されると、Pythonはインデックスから辞書citiesの対応する位置を見つけ、その位置の内容を取得します.

['_find']この位置の内容は私たちの関数findCityなので、Pythonはここで関数を表すことを知っていて、それが出会った(関数呼び出しを開始しました.

findCityは、citiesからstatesを探し、見つけた内容を返し、何も見つからない場合は、何も見つからないという情報を返します.

Python findCityは、返された情報を受け入れ、最後に最初のcityFoundという変数にその情報を付与する.

すべてのコードの読み方は次のとおりです.

前から後ろへ.

後ろから前へ.

反時計回り方向.

from sys import exit
from random import randint


def death():
    quips = ["You 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))])
    exit(1)


def centralCorridor():
    print("The Gothons of Planet Percal #25 have invaded your ship and destroyed")
    print("your entire crew. You are the last surviving member and your last")
    print("mission is to get the neutron destruct bomb from the Weapens last")
    print("put it in the bridge,and blow the ship up after getting into an ")
    print("escape pod.")
    print("
")
    print("You're running down the central corridor to the Weapons Armory when")
    print("a Gothon jumps out,red scoly 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 costum is flowing and moving around his body,which throws")
        print("off your aim. Your laser hits his costume but misses 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 a joke':
        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 gur ubhfr,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 'centralCorridor'


def laserWeaponArmory():
    print("You do a dive roll into the Weapon Armory,crouch and scan the room")
    print("for more Gothons that might be hiding. It's dead quiet,too quiet.")
    print("You stand up and run to 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 cnt'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 'theBridge'
    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 theBridge():
    print("You burst onto the Bridge with the neutron destruct bomb")
    print("under your arm and surprises 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 bock 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 'escapePod'
    else:
        print("DOES NOT COMPUTE!")
        return "theBridge"


def escapePod():
    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?")
    goodPod = randint(1, 5)
    guess = input("[pod #]> ")
    if int(guess) != goodPod:
        print("You jump into pod %s and hit hte eject button." % guess)
        print("The pod escapes out into the void of space,then")
        print("implodes as the hull ruptures,crushing your boby")
        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!")
        exit(0)


ROOMS = {'death': death, "centralCorridor": centralCorridor, "laserWeaponArmory": laserWeaponArmory,
         "theBridge": theBridge, "escapePod": escapePod}


def runner(map, start):
    next = start
    while True:
        room = map[next]
        print("
-------------")
        next = room()


runner(ROOMS, 'centralCorridor')

1.次の部屋に戻る仕組みを説明します.
2.より多くの部屋を作り、ゲームの規模を大きくします.
3.各関数に自分自身を印刷させる以外に、「ドキュメント文字列(doc strings)」式の注釈を勉強します.部屋の説明をドキュメント注記に書いて、実行するコードを変更して、ドキュメント注記を印刷できるかどうかを見てみましょう.
4.ドキュメントの注釈を部屋の説明として使用したら、この関数にユーザープロンプトを印刷する必要がありますか?関数を実行するコードにユーザープロンプトを出して、ユーザー入力を各関数に渡してみましょう.あなたの関数はif文の組み合わせにすぎず、結果を印刷し、次の部屋に戻る必要があります.
5.これは実は小さなバージョンの「有限状態機(finite state machine)」です.資料を探して読んでみてください.読めないかもしれませんが、探してみてください.
 
 
 
 

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