我正在開發一個 Python 文本 RPG，我正在使用字典向玩家提供有關他們正在訪問的區域的初始信息。（例如參見代碼）。當玩家鍵入“look”或“examine”時，我希望控制臺打印出我在 EXAMINATION 鍵的值中擁有的內容。我想要它做的是一次打印一段文本，或者等待玩家在繼續之前按下回車鍵，或者在打印下一個塊之前至少等待幾秒鐘。有沒有辦法做到這一點？也許我是從錯誤的方向來的？import timeimport sysdef prompt(): print("\n" + "=========================") print("What would you like to do?") player_action = input("> ") acceptable_actions = ['move', 'go', 'travel', 'walk', 'quit', 'examine', 'inspect', 'interact', 'look'] while player_action.lower() not in acceptable_actions: print("Unknown action, try again.\n") player_action = input("> ") if player_action.lower() == 'quit': sys.exit() elif player_action.lower() in ['move', 'go', 'travel', 'walk']: player_move(player_action.lower()) elif player_action.lower() in ['examine', 'inspect', 'interact', 'look']: player_examine(player_action.lower())def player_examine(player_action): if zonemap[myPlayer.location][SOLVED]: print("There's nothing more here to examine.") elif zonemap[myPlayer.location][EXAMINATION]: slowprint(zonemap[myPlayer.location][EXAMINATION])ZONENAME = ''DESCRIPTION = 'description'EXAMINATION = 'examine'SOLVED = FalseUP = 'up', 'north'DOWN = 'down', 'south'LEFT = 'left', 'west'RIGHT = 'right', 'east'zonemap = { 'Fields': { ZONENAME: "Western Fields", DESCRIPTION: "A grassy field to the west of town.", EXAMINATION: "The grass in this field is extremely soft." + input("> ") + "The wind feels cool on your face." + time.sleep(2) + "The sun is beginning to set.", SOLVED: False, UP: "The Mountains", DOWN: "The Town", LEFT: "", RIGHT: "The Ocean", },嘗試使用 time.sleep() 方法時，出現以下錯誤：TypeError: can only concatenate str (not "NoneType") to str嘗試使用 input("> ") 函數時，文本無需等待即可直接打印。
1 回答
縹緲止盈
TA貢獻2041條經驗 獲得超4個贊
您的方法不起作用，因為您在構建字典時立即調用input()or函數。，例如，返回，這就是你得到錯誤的原因。time.sleep()time.sleep()None
當您從字典中檢索值并且實際上想要“慢打印”描述時，您需要稍后調用這些函數。
您可以通過多種不同的方式來做到這一點。你可以
使用字符串序列（例如列表或元組）而不是單個字符串，并讓您的
slowprint()函數接受序列并在打印每個元素后暫停。使用一系列字符串并混合特殊值來
slowprint()尋找做不同的事情，比如睡覺或請求輸入。在字典中存儲一個函數，然后調用。函數也是對象，就像字符串一樣。該函數將處理所有打印和暫停。
例如存儲一個字符串元組：
EXAMINATION: (
"The grass in this field is extremely soft.",
"The wind feels cool on your face.",
"The sun is beginning to set.",
)
然后讓你的slowprint()函數處理：
def slowprint(lines):
"""Print each line with a pause in between"""
for line in lines:
print(line)
input("> ") # or use time.sleep(2), or some other technique
第二個選項，插入特殊值，使您能夠將各種額外功能委托給其他代碼。您需要測試序列中對象的類型，但這會讓您在檢查描述中插入任意操作。就像睡覺和要求用戶擊鍵之間的區別一樣：
class ExaminationAction:
def do_action(self):
# the default is to do nothing
return
class Sleep(ExaminationAction):
def __init__(self, duration):
self.duration = duration
def do_action(self):
time.sleep(self.duration)
class Prompt(ExaminationAction):
def __init__(self, prompt):
self.prompt = prompt
def do_action(self):
return input(self.prompt)
并讓slowprint()函數查找這些實例：
def slowprint(examine_lines):
for action_or_line in examine_lines:
if isinstance(action_or_line, ExamineAction):
# special action, execute it
action_or_line.do_action()
else:
# string, print it
print(action_or_line)
您可以進行任意數量的此類操作；關鍵是它們都是子類ExamineAction，因此可以與普通字符串區分開來。將它們放入您的EXAMINATION密鑰序列中：
EXAMINATION: (
"The grass in this field is extremely soft.",
Prompt("> "),
"The wind feels cool on your face.",
Sleep(2),
"The sun is beginning to set.",
)
可能性是無止境。
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