成绩计算器未退出

Question

我有一个程序应该根据整数输入来近似字母等级。我希望它能够连续运行直到输入数字“-1”，然后退出。但是，每当我尝试运行它时，程序只会一遍又一遍地告诉我我的成绩，而不会做任何其他事情。这是我到目前为止所拥有的。

import easygui


grade = int(easygui.enterbox(msg="Enter a grade between 0 and 100: "))
while grade != -1:

    if grade >= 90 and grade <100:
        easygui.msgbox ("You got an A")
    if grade >= 80 and grade <90:
        easygui.msgbox ("You got a B")
    if grade >= 70 and grade <80:
        easygui.msgbox ("You got a C")
    if grade >= 60 and grade <70:
        easygui.msgbox ("You got a D")
    if grade >= 0 and grade <60:
        easygui.msgbox ("You got an F")

else: raise SystemExit

Answer 1

你需要在while循环中重新获取输入的成绩。

    import easygui


grade = int(easygui.enterbox(msg="Enter a grade between 0 and 100: "))
while grade != -1:

    if grade >= 90 and grade <100:
        easygui.msgbox ("You got an A")
    if grade >= 80 and grade <90:
        easygui.msgbox ("You got a B")
    if grade >= 70 and grade <80:
        easygui.msgbox ("You got a C")
    if grade >= 60 and grade <70:
        easygui.msgbox ("You got a D")
    if grade >= 0 and grade <60:
        easygui.msgbox ("You got an F")

    grade = int(easygui.enterbox(msg="Enter a grade between 0 and 100: "))

else: raise SystemExit

Answer 2

import easygui

等级 = int(easygui.enterbox(msg="Enter a grade between 0 and 100: ")) 而等级 != -1:

if grade >= 90 and grade <100:
    easygui.msgbox ("You got an A")
if grade >= 80 and grade <90:
    easygui.msgbox ("You got a B")
if grade >= 70 and grade <80:
    easygui.msgbox ("You got a C")
if grade >= 60 and grade <70:
    easygui.msgbox ("You got a D")
if grade >= 0 and grade <60:
    easygui.msgbox ("You got an F")

grade = int(easygui.enterbox(msg="Enter a grade between 0 and 100: "))

否则：引发 SystemExit

成绩计算器未退出

Grade Calculator isn't exiting

python

calculator

easygui