我需要将最后三分的学生及其姓名写入一个文本文件中,供教师的课程阅读和排序。 我仍然不知道如何保存最后3分 到目前为止我试过这个:
#Task 2
import random
name_score = []
myclass1= open("class1.txt","a")#Opens the text files
myclass2= open("class2.txt","a")#Opens the text files
myclass3= open ("class3.txt","a")#Opens the text files
def main():
name=input("Please enter your name:")#asks the user for their name and then stores it in the variable name
if name==(""):#checks if the name entered is blank
print ("please enter a valid name")#prints an error mesage if the user did not enter their name
main()#branches back to the main fuction (the beggining of the program), so the user will be asked to enter their name again
class_name(name)#branches to the class name function where the rest of the program will run
def class_name(yourName):
try:#This function will try to run the following but will ignore any errors
class_no=int(input("Please enter your class - 1,2 or 3:"))#Asks the user for an input
if class_no not in range(1, 3):
print("Please enter the correct class - either 1,2 or 3!")
class_name(yourName)
except:
print("Please enter the correct class - either 1,2 or 3!")#asks the user to enter the right class
class_name(yourName)#Branches back to the class choice
score=0#sets the score to zero
#add in class no. checking
for count in range (1,11):#Starts the loop
numbers=[random.randint (1,11),
random.randint (1,11)]#generates the random numbers for the program
operator=random.choice(["x","-","+"])#generates the random operator
if operator=="x":#checks if the generated is an "x"
solution =numbers[0]*numbers[1]#the program works out the answer
question="{0} * {1}=".format(numbers[0], numbers [1])#outputs the question to the user
elif operator=="+":#checks if the generated operator is an "+"
solution=numbers[0]+numbers[1]#the program works out the answer
question="{0} + {1}=".format(numbers[0], numbers [1])#outputs the question to the user
elif operator=="-":
solution=numbers[0]-numbers[1]#the program works out the answer
question="{0} - {1}=".format(numbers[0], numbers [1])#outputs the question to the user
try:
answer = int(input(question))
if answer == solution:#checks if the users answer equals the correct answer
score += 1 #if the answer is correct the program adds one to the score
print("Correct! Your score is, {0}".format(score))#the program outputs correct to the user and then outputs the users score
else:
print("Your answer is not correct")# fail safe - if try / else statment fails program will display error message
except:
print("Your answer is not correct")#if anything else is inputted output the following
if score >=5:
print("Congratulations {0} you have finished your ten questions your total score is {1} which is over half.".format(yourName,score))#when the user has finished there ten quetions the program outputs their final score
else:
print("Better luck next time {0}, your score is {1} which is lower than half".format(yourName,score))
name_score.append(yourName)
name_score.append(score)
if class_no ==1:
myclass1.write("{0}\n".format(name_score))
if class_no ==2:
myclass2.write("{0}\n".format(name_score))
if class_no ==3:
myclass3.write("{0}\n".format(name_score))
myclass1.close()
myclass2.close()
myclass3.close()
答案 0 :(得分:1)
你的程序现在看起来工作得很好。
我已经重新考虑了您的代码以遵循PEP8指南,您应该尝试使其更清晰易读。
删除了try/except
块,此处不需要。如果没有try/except
(exception
...),请不要使用ValueError, KeyError
。另外,使用with open(...) as ...
代替open/close
,它会为您关闭文件。
# Task 2
import random
def main():
your_name = ""
while your_name == "":
your_name = input("Please enter your name:") # asks the user for their name and then stores it in the variable name
class_no = ""
while class_no not in ["1", "2", "3"]:
class_no = input("Please enter your class - 1, 2 or 3:") # Asks the user for an input
score = 0
for _ in range(10):
number1 = random.randint(1, 11)
number2 = random.randint(1, 11)
operator = random.choice("*-+")
question = ("{0} {1} {2}".format(number1,operator,number2))
solution = eval(question)
answer = input(question+" = ")
if answer == str(solution):
score += 1
print("Correct! Your score is, ", score)
else:
print("Your answer is not correct")
print("Congratulations {0}, you have finished your ten questions!".format(your_name))
if score >= 5:
print("Your total score is {0} which is over half.".format(score))
else:
print("Better luck next time {0}, your score is {1} which is lower than half".format(your_name, score))
with open("class%s.txt" % class_no, "a") as my_class:
my_class.write("{0}\n".format([your_name, score]))
main()