【发布时间】：2016-02-13 15:11:50
【问题描述】：
这是错误：
Traceback（最近一次调用最后一次）： 文件“C:/Users/Wattel/Desktop/21 21 21.py”，第 177 行，在 主要的（） 文件“C:/Users/Wattel/Desktop/21 21 21.py”，第 167 行，主要 PPOINTS, DPOINTS, PHAND, DHAND = dLoop(PHAND, DHAND, DECK) TypeError: 'NoneType' 对象不可迭代
我知道它与这段代码有关，但无法弄清楚问题到底是什么：
scoreHAND(DHAND) < 18 or scoreHAND(DHAND) < 21 and scoreHAND(DHAND) < scoreHAND(PHAND) or scoreHAND(DHAND) < 21
这是我的其余代码：
##21 Card Game
##Wattel
##2016 Spring
from random import *
import random
from random import shuffle, randint
CARDPOINTS = {'AD': 11,'AH': 11,'AC': 11,'AS': 11,
'KD': 10,'KH': 10,'KC': 10,'KS':10,
'QD': 10,'QH': 10,'QC': 10,'QS': 10,
'JD': 10,'JH': 10,'JC': 10,'JS': 10,
'10D': 10,'10H': 10,'10C': 10,'10S': 10,
'9D': 9,'9H': 9,'9C': 9,'9S': 9,
'8D': 8,'8H': 8,'8C': 8,'8S': 8,
'7D': 7,'7H': 7,'7C': 7,'7S': 7,
'6D': 6,'6H': 6,'6C': 6,'6S': 6,
'5D': 5,'5H': 5,'5C': 5,'5S': 5,
'4D': 4,'4H': 4,'4C': 4,'4S': 4,
'3D': 3,'3H': 3,'3C': 3,'3S': 3,
'2D': 2,'2H': 2,'2C': 2,'2S': 2,}
List = ['AD','AH','AC','AS',
'KD','KH','KC','KS',
'QD','QH','QC','QS',
'JD','JH','JC','JS',
'10D','10H','10C','10S',
'9D','9H','9C','9S',
'8D','8H','8C','8S',
'7D','7H','7C','7S',
'6D','6H','6C','6S',
'5D','5H','5C','5S',
'4D','4H','4C','4S',
'3D','3H','3C','3S',
'2D','2H','2C','2S',]
def want2play():
Hit2Play = input(" Hit 'y' to begin your game of 21): ")
print ("")
return Hit2Play
def deckCheck(DECK):
print (DECK)
print("There are:",len(DECK),"cards in the deck.")
if len(DECK) < 20:
DECK = shuffleDeck()
return DECK
else:
return DECK
def openingDeal(DECK):
PHAND = []
DHAND = []
DHANDT = []
PHAND, DECK = dealOneCard(PHAND, DECK)
DHAND, DECK = dealOneCard(DHAND, DECK)
DHANDT.append(DHAND[0])
PHAND, DECK = dealOneCard(PHAND, DECK)
DHAND, DECK = dealOneCard(DHAND, DECK)
DHANDT.append("back of card")
PPOINTS = scoreHAND(PHAND)
printScores_0(PPOINTS, PHAND, DHANDT)
return PHAND, DHAND, DHANDT, DECK
def pLoop(PHAND, DHAND, DHANDT, DECK):
while scoreHAND(PHAND) < 21:
hitorhold = input('Do you want to hit or hold?: ')
if hitorhold == 'hit':
dealOneCard(PHAND, DECK)
printScores_0(scoreHAND(PHAND), PHAND, DHANDT)
elif hitorhold == 'hold':
print('Player holds')
printScores_0(scoreHAND(PHAND), PHAND, DHANDT)
break
return PHAND, DHAND, DECK
def dLoop(PHAND, DHAND, DECK):
printScores_1(scoreHAND(PHAND), scoreHAND(DHAND), PHAND, DHAND)
if scoreHAND(DHAND) < 18 or scoreHAND(DHAND) < 21 or scoreHAND(DHAND) < scoreHAND(PHAND) or scoreHAND(DHAND) < 21 or scoreHAND(PHAND) < 22:
dealOneCard(DHAND, DECK)
printScores_1(scoreHAND(PHAND), scoreHAND(DHAND), PHAND, DHAND)
return scoreHAND(PHAND), scoreHAND(DHAND), PHAND, DHAND
else:
return scoreHAND(PHAND), scoreHAND(DHAND), PHAND, DHAND
def checkScore(pWin, dWin, PPOINTS, DPOINTS):
if DPOINTS > PPOINTS and DPOINTS < 22:
dWin += 1
print (' ')
print ("Dealer Win")
return pWin, dWin
elif PPOINTS == DPOINTS and PPOINTS < 21:
dWin += 1
print (' ')
print ("Dealer Win")
return pWin, dWin
elif PPOINTS > 21 and DPOINTS < 21:
dWin += 1
print(' ')
print("Dealer Win")
return pWin, dWin
elif PPOINTS < 22 and DPOINTS > 21:
pWin += 1
print (' ')
print ("Player Win")
return pWin, dWin
elif PPOINTS > 21 and DPOINTS > 21:
print (' ')
print ("Tie.")
return pWin, dWin
elif PPOINTS == 21 and DPOINTS == 21:
print(' ')
print("Tie.")
return pWin, dWin
def dealOneCard(HAND,DECK):
theCard = DECK.pop(0)
HAND.append(theCard)
return HAND, DECK
def shuffleDeck():
CardPile = len(List)
random.shuffle(List)
return List
def scoreHAND(HAND):
points = addScore(HAND)
aceCount=0
if points > 21:
aceCount += HAND.count('AS')
aceCount += HAND.count('AH')
aceCount += HAND.count('AC')
aceCount += HAND.count('AD')
while points > 21 and aceCount > 0:
points -= 10
aceCount -= 1
return points
else:
return points
def addScore(HAND):
tempScore = 0
for i in HAND:
tempScore += CARDPOINTS[i]
return tempScore
def printScores_0(POINTS, HAND, HAND1):
print("Player's cards: ", HAND, "Player's hand score: ", POINTS)
print("Dealer's cards: ", HAND1)
def printScores_1(PPOINTS, DPOINTS, PHAND, DHAND):
print("Player's cards: ", PHAND, "Player's hand score: ", PPOINTS)
print("Dealer's cards: ", DHAND, "Dealer's hand score: ", DPOINTS)
def main():
DECK = shuffleDeck()
pWin = 0
dWin = 0
while True:
Hit2Play = want2play()
if Hit2Play == 'y':
DECK = deckCheck(DECK)
PHAND, DHAND, DHANDT, DECK = openingDeal(DECK)
PHAND, DHAND, DECK = pLoop(PHAND, DHAND, DHANDT, DECK)
PPOINTS, DPOINTS, PHAND, DHAND = dLoop(PHAND, DHAND, DECK)
pWin, dWin = checkScore(pWin, dWin, PPOINTS, DPOINTS)
print("")
print("Player's Wins:", pWin, "Dealer's Wins:",dWin)
print("")
else:
print("Player's Wins:", pWin, "Dealer's Wins:",dWin)
break
main()
【问题讨论】：
-
PEP-8 建议应为常量保留 ALL_CAPS。
-
你确定这是堆栈跟踪吗？它应该追溯到迭代失败的确切点，该点比您显示的行更靠近调用堆栈。从堆栈跟踪的底部，查看每一行的代码，并问自己这个变量是如何变成
None的。如果您需要更多信息，请四处打印。 -
不管你在下面得到什么帮助，在你发送你的程序后，你应该把这段损坏的代码复制一份，并学习使用 pdb，python 调试器！ stackoverflow.com/questions/1623039/python-debugging-tips --- docs.python.org/2/library/pdb.html
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如果某个答案对您有帮助，您应该接受它作为解决方案。
标签： python