Question

这是我的代码：

def midterm_1(): 

    print("Midterm 1:")
    weight_1=int(input("Weight 0-100?"))
    score_earned=int(input("Score earned?"))
    score_shift=int(input("Were scores shifted (1=yes 2=no)?"))
    if  (score_shift==1):
        shift_amount=int(input("What was the shift amount?"))
        score_earned=int(shift_amount)+int(score_earned)
    if (score_earned >100):
        score_earned=100
    print("Total points = "+str(score_earned)+str("/100"))
    weighted_score=int((score_earned/100)*weight_1)
    print("Your weighted score = "+str(weighted_score)+"/"+str(weight_1))

此代码应该是用于计算等级的较大代码的一部分。当打印加权分数时，它仅将score_earned视为100或0。

我该如何解决这个问题？

以下是没有得分时的输出示例：

Midterm 1:
Weight 0-100? 50
Score earned? 78
Were scores shifted (1=yes 2=no)? 2
Total points = 78/100
Your weighted score = 0/50

当分数转换且score_earned超过100时：

Midterm 1:
Weight 0-100? 89
Score earned? 89
Were scores shifted (1=yes 2=no)? 1
What was the shift amount? 90
Total points = 100/100
Your weighted score = 89/89

Answer 1

首先，你没有使用Python 3.x;你使用的是2.7 - 你的结果只能在2.7中复制，但不能在3.x中复制。

其次，你在行

中有整数除法

weighted_score = int((score_earned / 100) * weight_1)

在Python 2.7中，如果将较小的int数除以较大的int数，则总是得到0.您的行必须是：

weighted_score = int((score_earned / 100.0) * weight_1) # Mind the .0

Answer 2

你应该退后一步，看看问题的各个部分

首先，您需要获取某些值之间的整数输入

类似这样的事情

def get_integer(prompt,min_val=float("-inf"),max_val=float("inf")):
    while True:
        try:
           result = int(input(prompt))
        except (TypeError,ValueError):
           print("That is not an integer... try again")
           continue
        else:
           if min_val < result < max_val: 
              return result # guaranteed to be an integer
           print("Please Enter a value Between {min_val} - {max_val}".format(min_val=min_val,max_val=max_val))

接下来你需要从用户那里得到3个字段让我们做一个辅助功能

类似这样的事情

def get_input(exam_name):
    """ guaranteed to return 3 integers between 0 and 100 """
    print("Enter Scores For : {exam}".format(exam=exam_name))
    return get_integer("Weight:",0,100),get_integer("Score:",0,100),get_integer("Offset(or zero for none):",0,100)

最后只使用您的帮助函数来获取单个值

类似

def midterm1():
   wt,score,offset = get_input("Midterm 1")
   score = min(score+offset,100) # if score + offset > 100 then just use 100
   return wt,score

但这些观点实际上都没有解决你的问题....这在@dyz回答

python忽略如果在成绩计算器中的陈述

2 个答案: