我需要使用 str 方法查找卡的等级和套装我不确定我是否正确执行此操作。我在main中得到了正确的答案，但它没有从方法 str 中打印出我想要的语句。我错过了什么？
from math import *
from random import *
from string import *
class Card:
def __init__(self, rank, suit) :
self.rank = int(rank)
self.suit = str(suit)
def getRank(self) :
return self.rank
def getSuit(self):
return self.suit
def __str__(self):
if self.rank == 1:
if self.suit == "d" :
print "The card is an Ace of Diamonds "
elif self.suit == "c":
print "The card is an Ace of Clubs"
elif self.suit == "h" :
print "The card is an Ace of Hearts"
elif self.suit == "s" :
print "The card is an Ace of Spades"
elif self.rank in range(2, 11):
if self.suit == "d" :
print "The card is a", rank, "of Diamonds"
elif self.suit == "c" :
print "The card is a", rank, "of Clubs"
elif self.suit == "h" :
print "The card is a", rank, "of Hearts"
elif self.suit == "s" :
print "The card is a", rank, "of Spades"
elif self.rank == 11 :
if self.suit == "d" :
print "The card is a Jack of Diamonds"
elif self.suit == "c" :
print "The card is a Jack of Clubs"
elif self.suit == "h" :
print "The card is a Jack of Hearts"
elif self.suit == "s" :
print "The card is a Jack of Spades"
elif self.rank == 12 :
if self.suit == "d" :
print "The card is a Queen of Diamonds"
elif self.suit == "c" :
print "The card is a Queen of Clubs"
elif self.suit == "h" :
print "The card is a Queen of Hearts"
elif self.suit == "s" :
print "The card is a Queen of Spades"
elif self.rank == 13 :
if self.suit == "d" :
print "The card is a King of Diamonds"
elif self.suit == "c" :
print "The card is a King of Clubs"
elif self.suit == "h" :
print "The card is a King of Hearts"
elif self.suit == "s" :
print "The card is a King of Spades"
return self.rank, self.suit
def main():
# You can also pick the cards at random using randrange() function
x = raw_input("Enter the rank and suit for the card that you picked (tab separated) ")
print x
rank, suit = x.split("\t")
print rank, suit
s = Card(int(rank), str(suit))
print s.getRank(), s.getSuit(), s.__str__()
if __name__ == '__main__' :
main()
感谢您的帮助。
答案 0 :(得分：0)
我觉得你在代码块之外包含代码，这让我有点混淆我拼凑。
就你的代码而言，print语句对我有用。如果希望方法str中的print语句起作用，则需要调用它。
目前这是你的功能回归给我的：
3 h
3 h The card is a 3 of Hearts
(3, 'h')
第一个“3小时”来自你的
print rank, suit
。
3小时这张牌是3张Heart来自来电
s.getRank() ## Returns 3
s.getSuit() ## Returns h
s.__str__() ##Returns:
#The card is a 3 of Hearts
#(3, 'h')
最后一个s。 str （）返回多个部分，因为你的return语句与print语句一起使用。我不确定您希望代码返回的格式，但我认为您只需要s。 str （）返回“The card is a 3 of Hearts”
目前它返回
self.rank, self.suit
但那些已经被那个班级归还，所以我不确定他们为什么会在那里。你可以让它只返回你的print语句。
class Card:
def __init__(self, rank, suit) :
self.rank = int(rank)
self.suit = str(suit)
def getRank(self) :
return self.rank
def getSuit(self):
return self.suit
def __str__(self):
if self.rank == 1:
if self.suit == "d" :
printstatement= "The card is an Ace of Diamonds "
elif self.suit == "c":
printstatement= "The card is an Ace of Clubs"
elif self.suit == "h" :
printstatement= "The card is an Ace of Hearts"
elif self.suit == "s" :
printstatement= "The card is an Ace of Spades"
elif self.rank in range(2, 11):
if self.suit == "d" :
printstatement= "The card is a "+ rank +" of Diamonds"
elif self.suit == "c" :
printstatement= "The card is a "+ rank +" of Clubs"
elif self.suit == "h" :
printstatement= "The card is a "+ rank +" of Hearts"
elif self.suit == "s" :
printstatement= "The card is a "+ rank +" of Spades"
elif self.rank == 11 :
if self.suit == "d" :
printstatement= "The card is a Jack of Diamonds"
elif self.suit == "c" :
printstatement= "The card is a Jack of Clubs"
elif self.suit == "h" :
printstatement= "The card is a Jack of Hearts"
elif self.suit == "s" :
printstatement= "The card is a Jack of Spades"
elif self.rank == 12 :
if self.suit == "d" :
printstatement= "The card is a Queen of Diamonds"
elif self.suit == "c" :
printstatement= "The card is a Queen of Clubs"
elif self.suit == "h" :
printstatement= "The card is a Queen of Hearts"
elif self.suit == "s" :
printstatement= "The card is a Queen of Spades"
elif self.rank == 13 :
if self.suit == "d" :
printstatement= "The card is a King of Diamonds"
elif self.suit == "c" :
printstatement= "The card is a King of Clubs"
elif self.suit == "h" :
printstatement= "The card is a King of Hearts"
elif self.suit == "s" :
printstatement= "The card is a King of Spades"
return str(printstatement)
如果您更改班级以反映上面发布的代码，则代码会输出：
7 h
7 h The card is a 7 of Hearts
如果您希望最终字符串位于其自己的行上，则可以执行以下操作：
## Change this:
print s.getRank(), s.getSuit(), s.__str__()
## To this:
print s.getRank(), s.getSuit(), "\n", s.__str__()
## To have your code output this:
4 d
4 d
The card is a 4 of Diamonds