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据我所知,在我的循环中输入了一个尾部值来结束程序。我的课程的目的是输入一个孩子的名字,然后输入他们的成绩。当你完成一个孩子时,你输入-1来结束程序的那部分。在你完成一个孩子后,程序应该要求你输入另一个孩子的名字。预告片值“完成”有效,但当我输入一个随机的孩子名称时,它会提示名称未定义,并且不会运行程序的其余部分。帮帮我?有效使用while循环
#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.")
我知道名字是无用的,但这是为我的计算机科学类,我必须在那里的名称。虽然谢谢! –
我是否用raw_input语句替换了所有的输入语句? –
@ChristianBraverman:不是'grade = input(“输入等级:”)'ones-,或者你可以用'int(input(“输入等级:”))'替换它们'。这个想法是,'input'(在Python 2.X中,不是Python 3)有效地读取用户的Python代码(如数字或变量名),而'raw_input'正在读取一个字符串。 –