询问输入时代码断开的原因是什么？

Question

嗨我是python的新手，并在一个小项目上工作：

我想写一个程序来提供直接投射到空中的球高度的信息。程序应该要求输入初始高度，h英尺和初始速度，即每秒v英尺。 t秒后球的高度为h + vt - 16t2英尺。该程序应执行以下两个计算：

（a）确定球的最大高度。注意：球在v / 32秒后将达到最大高度。 （b）大致确定球何时会撞到地面。提示：每隔0.1秒计算一次高度，并确定高度何时不再为正数。应使用名为getInput的函数来获取h和v的值，该函数应调用名为isValid的函数以确保输入值为正数。任务（a）和（b）中的每一项都应由功能执行

  def getInput():
        h = int(input("Enter the initial height of the ball: "))
        v = int(input("Enter the initial velocity of the ball: "))
        isValid(h,v)

    def isValid(h,v):
        if (h<= 0):
            print("Please enter positive values")

        elif(v<= 0):
            print("Please enter positive values")

        else:
            height = maxHeight(h,v)
            print("The maximum height of the ball is", height, "feet.")
            groundTime = ballTime(h,v)
            print("The ball will hit the ground after approximately", groundTime, "seconds.")


    def maxHeight(h,v):
        t = (v/32)
        maxH = (h + (v*t) - (16*t*t))
        return maxH


    def ballTime(h,v):
        t = 0.1
        while(True):
            ballHeight = (h + (v*t) - (16*t*t))
            if (ballHeight <= 0):
                break
            else:
                t += 0.1

        return t

    getInput()

The output I desire is:

> Enter the initial height of the ball: 5 
> Enter the initial velocity of the ball: 34 
-The maximum height of the ball is 23.06 feet. 
-The ball will hit the ground after approximately 2.27 seconds.

Answer 1

看起来你正在使用IPython？你可能不得不摆脱elif和if body之间的空间。它似乎完成了对那里的行的解释然后，如果你要逐个输入这些行，那么Python解释器将如何停止解释。

 def getInput():
        h = int(input("Enter the initial height of the ball: "))
        v = int(input("Enter the initial velocity of the ball: "))
        isValid(h,v)

    def isValid(h,v):
        if (h<= 0):
            print("Please enter positive values")
        elif(v<= 0):
            print("Please enter positive values")
        else:
            height = maxHeight(h,v)
            print("The maximum height of the ball is", height, "feet.")
            groundTime = ballTime(h,v)
            print("The ball will hit the ground after approximately", groundTime, "seconds.")


    def maxHeight(h,v):
        t = (v/32)
        maxH = (h + (v*t) - (16*t*t))
        return maxH


    def ballTime(h,v):
        t = 0.1
        while(True):
            ballHeight = (h + (v*t) - (16*t*t))
            if (ballHeight <= 0):
                break
            else:
                t += 0.1
        return t

    getInput()