Contents
- card_byid.py
- card.py
- years_dictionary2.py
card_byid.py 1/3
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class Card:
"""
A class to represent a standard playing card. The ranks are ints:
2-10 for numbered cards, 11=Jack, 12=Queen, 13=King, 14=Ace.
The suits are strings: 'clubs', 'spades', 'hearts', 'diamonds'.
"""
def __init__(self, rank, suit):
"Constructor for class Card takes int rank and string suit."
# card ids go from 2 to 55
self.cardid = rank
if suit == "clubs":
self.cardid += 13
elif suit == "hearts":
self.cardid += 26
elif suit == "diamonds":
self.cardid += 39
def __str__(self):
"Returns a string describing the card as 'rank of suit'."
result = ""
rank = self.getRank()
if rank == 11:
result += "Jack"
elif rank == 12:
result += "Queen"
elif rank == 13:
result += "King"
elif rank == 14:
result += "Ace"
else:
result += str(rank)
result += " of " + self.getSuit()
return result
def getRank(self):
"Returns rank."
return (self.cardid-2) % 13 + 2
def getSuit(self):
"Returns suit."
suits = ["spades", "clubs", "hearts", "diamonds"]
whichsuit = (self.cardid-2)//13
return suits[whichsuit]
def blackJackValue(self):
"Returns the value of the card in Black Jack"
if self.getRank() == 14:
# alternatively, this could be 11
return 1
elif self.getRank() > 10:
return 10
else:
return self.getRank()
def rummyValue(self):
"Returns the value of the card in Rummy"
if self.getRank() <= 9:
return 5
elif self.getRank() < 14:
return 10
else:
return 15
def main():
c1 = Card(14, "spades")
print( c1 )
print( c1.getRank() )
print( "Black Jack Value", c1.blackJackValue())
print( "Rummy Value", c1.rummyValue())
c2 = Card(13, "hearts")
print(c2)
print(c2.getRank())
print("Black Jack Value", c2.blackJackValue())
print("Rummy Value", c2.rummyValue())
if __name__ == '__main__':
main()
card.py 2/3
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class Card:
"""
A class to represent a standard playing card. The ranks are ints:
2-10 for numbered cards, 11=Jack, 12=Queen, 13=King, 14=Ace.
The suits are strings: 'clubs', 'spades', 'hearts', 'diamonds'.
"""
def __init__(self, rank, suit):
"""Constructs a new Card object with the given rank (an int) and suit (a
string)."""
self.rank = rank
self.suit = suit
def __str__(self):
"Returns a string describing the card as 'rank of suit'."
result = ""
if self.rank == 11:
result += "Jack"
elif self.rank == 12:
result += "Queen"
elif self.rank == 13:
result += "King"
elif self.rank == 14:
result += "Ace"
else:
result += str(self.rank)
result += " of " + self.suit
return result
def getRank(self):
"Returns rank."
return self.rank
def getSuit(self):
"Returns suit."
return self.suit
# Since I am probably going to import this script into another script,
# I only want to call main() when it's *not* imported
def main():
c1 = Card(14, "spades")
print(c1)
c2 = Card(13, "hearts")
print(c2)
c3 = Card(2, "diamonds")
print(c3)
myString = c3.__str__()
myString2 = str(c3)
print(myString)
print(myString2)
if __name__ == '__main__':
main()
years_dictionary2.py 3/3
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# Given a file of the form <lastname> <year>
# creates a mapping between the years and the number of students
# in that year.
# by CSCI 111
FILENAME="data/years.dat"
# open the data file for reading
yearsFile = open(FILENAME, "r")
# create an accumulator dictionary
yearToNumberOfStudents = {}
# iterate through the lines of the file
for line in yearsFile:
# split the line
# the list created has the last name as the first item
# and the second item in the list is the year
lineList = line.split()
lastname = lineList[0] # --> no longer need the last name
year = int(lineList[1])
# find out if there was a previous count
#oldCount = yearToNumberOfStudents.get(year)
# there was no mapping in the dictionary yet
#if oldCount is None:
# just found a student
# yearToNumberOfStudents[year] = 1
#else:
# yearToNumberOfStudents[year] = oldCount + 1
# Alternative solution:
if year in yearToNumberOfStudents:
yearToNumberOfStudents[year]+=1
else:
yearToNumberOfStudents[year] = 1
yearsFile.close()
print("The number of students enrolled in CSCI111 for each class year:")
print("%4s %5s" % ("Year", "Count"))
print("-"*4, "-"*5)
for year in sorted(yearToNumberOfStudents):
count = yearToNumberOfStudents[year]
print("%4d %5d" % (year, count))
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