Question

我正在尝试按学生姓名对数据文件进行排序，以便我将所有学生姓名及其类别代码和分数放在同一行。我设法按名称顺序排序，但数据不会拆分为单独的行，也不会将相关的类代码或分数与每个名称放在一起。

代码是：

import random
q=0
ans=0
studentnames = []
ascending = []


classcode = input("Enter your class (1,2 or 3): ")

if classcode == '1':
name=input("Enter your name: ")
n= int(input("Enter the number of questions you want to attempt: "))

#writing details to a txt file group1

text_file1 = open("data.dat", "a")


while q<n:                  
    c = random.randint(1,3)
    print("c is: ", c)

    if c==1:   
        f="+"

        num1 = random.randint(0,12)
        print("num1 is: ", num1)

        num2 = random.randint(0,10)
        print("num2 is: ", num2)

        product=num1*num2
        difference=num1-num2
        total=num1+num2

        d=total

        q+=1

        print("\n Question ", q)
        print ("What is  ",num1,f,num2," ? ")

        l=int(input("Enter Your Answer: "))
        if l==d:
            print ("\nCongratulations! your answer is right.\n")
            ans+=1
        else:
            print("\n I'm afraid your answer is wrong. The correct one is" ,d)            

    elif c==2:         
        f="*"

        num1 = random.randint(0,12)
        print("num1 is: ", num1)

        num2 = random.randint(0,10)
        print("num2 is: ", num2)

        product=num1*num2
        difference=num1-num2
        total=num1+num2

        d=product


        q+=1

        print("\n Question ", q)
        print ("What is  ",num1,f,num2," ? ")

        l=int(input("Enter Your Answer: "))
        if l==d:
            print ("\nCongratulations! your answer is right.\n")
            ans+=1
        else:
            print("\n I'm afraid your answer is wrong. The correct one is" ,d)

    else:         
        f="-"

        num1 = random.randint(0,12)
        print("num1 is: ", num1)

        num2 = random.randint(0,10)
        print("num2 is: ", num2)

        product=num1*num2
        difference=num1-num2
        total=num1+num2

        d=difference

        q+=1 # counter for questions

        print("\n Question ", q)
        print ("What is  ",num1,f,num2," ? ")

        l=int(input("Enter Your Answer: "))
        if l==d:
            print ("\nCongratulations! your answer is right.\n")
            ans+=1 # counter for answers
        else:
            print("\n I'm afraid your answer is wrong. The correct one is" ,d)

# calculating the percentage
x=float(ans)
y=float(q)
z=ans*100/q
cp=int(z)
print("Your Correct percentage = ",cp,"%\n")

#store details in a list
scores=[classcode,name,cp]
print(scores)

#writing to text file
text_file1.write(classcode )
text_file1.write(' ')
text_file1.write(name )
text_file1.write(' ')

#converting score to string so that it can be written to txt file
scr = str(cp)
text_file1.write(scr )

#adding a new line after each students score
text_file1.write("\n")

#close the txt file after it has been used
text_file1.close()

#reading the txt file
text_file1 = open("data.dat", "r")
print(text_file1.read())
text_file1.close()


f = open("data.dat", "r")
for line in f:
 fields = line.split()
 classcode = fields[0]
 name = fields[1]
 scr = str(fields[2])
 studentnames.append(classcode)
 studentnames.append(name)
 studentnames.append(scr)
 print(classcode, name, scr)



f = open("data.dat", "r")
for line in f:
fields = line.split()
classcode = fields[0]
name = fields[1]
scr = str(fields[2])
studentnames.sort()
ascending.append(studentnames)
print(ascending)

我尝试按名称顺序排序的数据文件是：

1 test2 100

1 test1 100

1 test3 20

1 test4 60

1 test5 33

1 aguero 100

1 aguero 100

1 aguero 100

1 aguero 50

1 test3 60

1 1 100

1 test3 50

1 test2 100

1 test1 100

1 test4 50

1 messi 100

1 messi 100

1 ronaldo 100

1 ronaldo 100

1 maradonna 100

1 maradonna 100

1 maradonna 100

由于

Answer 1

此代码读取数据文件，按名称对记录进行排序并显示结果。

import operator

with open("data.dat") as f:
  students = []
  for line in f:
    fields = line.split()
    students.append( (fields[0], fields[1], int(fields[2])) )

# sort by the student's name
sortedByName = sorted(students, key=operator.itemgetter(1))

for r in sortedByName:
  classcode, name, score = r
  print "name:", name, "classcode:", classcode, "score:", score

按学生姓名排序数据文件

1 个答案: