如何为我的转化创建函数

Question

这些是我的项目的说明。

Define different functions for the conversions. Call these functions.

我已经创建了带有输入框和文本框的 window。我有一个函数，但我知道我应该使用 setText() 在我的文本框中显示计算结果。而且我想我需要为 "invalid input" 部分使用一个语句。

entry1= Entry(Point(win.getWidth()/2,100),25)
entry1.setFill("White")
entry1.draw(win)

gramstext= Text(Point(160,136), "Grams")
gramstext.setTextColor("black")
gramstext.draw(win)

gramsbox= Rectangle(Point(107,147),Point(294,175))
gramsbox.setFill("white")
gramsbox.draw(win)

kilotext= Text(Point(160,195), "Kilograms")
kilotext.setTextColor("black")
kilotext.draw(win)

kilobox= Rectangle(Point(107,207),Point(294,235))
kilobox.setFill("white")
kilobox.draw(win)


ouncetext= Text(Point(160, 250), "Ounces")
ouncetext.setTextColor("black")
ouncetext.draw(win)

ouncebox= Rectangle(Point(107, 262),Point(294,290))
ouncebox.setFill("white")
ouncebox.draw(win)

#From here on is the updated code

button1= Rectangle(Point(142,290),Point(206,310))
button1.setOutline("black")
button1.setFill("white")
button1.draw(win)

button= Text(Point(win.getWidth()/3.5,300),"Convert")
button.setOutline("black")
button.draw(win)

closebutton1= Rectangle(Point(362, 290),Point(438,310))
closebutton1.setOutline("black")
closebutton1.setFill("white")
closebutton1.draw(win)

closebutton = Text(Point(win.getWidth() / 1.5, 300), "Close")
closebutton.setOutline("black")
closebutton.draw(win)

我希望在我创建的文本框中显示克、公斤和盎司的换算结果，但我似乎无法弄明白。

*EDIT 我现在可以在 window 中显示我的转化。我的问题是让我的关闭按钮工作。如果我把它放在 While True 之前，用户必须双击才能转换。我已经更新了上面的代码。

Answer 1

I want my conversions for grams, kg and ounces to display in the text boxes that I created

问题是，除了从未实际调用 poundsTo()，您没有创建 文本框 ，您创建了矩形不响应 setText() 方法。我已经修改并清理了下面的代码以使其基本正常运行：

from graphics import *

def poundsTo():
    grams = number * 452.592
    kgrams = number / 0.453592
    ounces = number * 16

    gramsbox.setText(grams)
    kilobox.setText(kgrams)
    ouncebox.setText(ounces)

win = GraphWin("Conversions", 600, 400)

poundstext = Text(Point(160, 50), "Pounds:")
poundstext.draw(win)

poundsbox = Entry(Point(win.getWidth() / 2, 50), 25)
poundsbox.setFill("White")
poundsbox.draw(win)

gramstext = Text(Point(160, 100), "Grams:")
gramstext.draw(win)

gramsbox = Text(Point(win.getWidth() / 2, 100), "")
gramsbox.draw(win)

kilotext = Text(Point(160, 150), "Kilograms:")
kilotext.draw(win)

kilobox = Text(Point(win.getWidth() / 2, 150), "")
kilobox.draw(win)

ouncetext = Text(Point(160, 200), "Ounces:")
ouncetext.draw(win)

ouncebox = Text(Point(win.getWidth() / 2, 200), "")
ouncebox.draw(win)

button = Text(Point(win.getWidth() / 2, 300), "Convert")
button.draw(win)

while True:
    win.getMouse()

    number = int(poundsbox.getText())
    poundsTo()

现在您需要遵循以下任务要求：处理用户输入非数字的内容；为转换定义不同的函数，而不是一个常见的函数。 "Exit" 按钮会是一个很好的补充。此外，使 GUI 更令人愉悦也无妨...

如何为我的转化创建函数

How to create a function for my conversions

python

zelle-graphics