我知道在我的循环中输入了预告片值以结束程序。我的计划的目的是输入孩子的名字,然后输入他们的成绩。完成一个孩子后,输入-1即可结束该程序的那一部分。完成一个孩子后,该程序应该要求您输入另一个孩子的名字。预告片值“Done”有效,但是当我输入一个随机的孩子名字时,它会询问它是否定义了名称,并且它不会运行程序的其余部分。救命?
#By: Christian Braverman 01/02/13
#Variables
TotalNum_A = 0
TotalNum_B = 0
TotalNum_C = 0
TotalNum_D = 0
TotalNum_F = 0
studentname = 0
Done = 0
grade = 0
#Loop
studentname = input("Enter student name ")
while studentname != Done :
studentname = input ("Enter student name ")
grade = input("Enter a Grade ")
while grade != -1:
grade = input("Enter a Grade: ")
if grade >=90 :
print "A!"
TotalNum_A = TotalNum_A + 1
if grade >=80 and grade <90:
print "B!"
TotalNum_B = TotalNum_B + 1
if grade >=70 and grade <80:
print "C"
TotalNum_C = TotalNum_C + 1
if grade >=60 and grade <70:
print "D"
TotalNum_D = TotalNum_D + 1
if grade <=59:
print "F :("
TotalNum_F = TotalNum_F + 1
grade = input("Enter a Grade: ")
#Printing Totals
print ("You received " + str(TotalNum_A) + " A's.")
print ("You recieved " + str(TotalNum_B) + " B's.")
print ("You recieved " + str(TotalNum_C) + " C's.")
print ("You recieved " + str(TotalNum_D) + " D's.")
print ("You recieved " + str(TotalNum_F) + " F's.")
答案 0 :(得分:0)
你应该使用raw_input
而不是input
- 这样,它将需要一个字符串,而不是要求输入是一个已经存在的变量。然后替换
while studentname != Done:
与
while studentname != "Done":
请注意,到目前为止,没有理由要求学生的姓名,因为截至目前,您的课程对他们没有任何帮助。