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from tkinter import *
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def run1():
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a = float(inp1.get())
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b = float(inp2.get())
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s = '%0.2f+%0.2f=%0.2f\n' % (a, b, a + b)
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txt.insert(END, s) # 追加显示运算结果
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inp1.delete(0, END) # 清空输入
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inp2.delete(0, END) # 清空输入
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def run2(x, y):
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a = float(x)
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b = float(y)
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s = '%0.2f+%0.2f=%0.2f\n' % (a, b, a + b)
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txt.insert(END, s) # 追加显示运算结果
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inp1.delete(0, END) # 清空输入
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inp2.delete(0, END) # 清空输入
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root = Tk()
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root.geometry('460x240')
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root.title('简单加法器')
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lb1 = Label(root, text='请输入两个数，按下面两个按钮之一进行加法计算')
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lb1.place(relx=0.1, rely=0.1, relwidth=0.8, relheight=0.1)
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inp1 = Entry(root)
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inp1.place(relx=0.1, rely=0.2, relwidth=0.3, relheight=0.1)
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inp2 = Entry(root)
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inp2.place(relx=0.6, rely=0.2, relwidth=0.3, relheight=0.1)
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# 方法-直接调用 run1()
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btn1 = Button(root, text='方法一', command=run1)
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btn1.place(relx=0.1, rely=0.4, relwidth=0.3, relheight=0.1)
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'''
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# 方法二利用 lambda 传参数调用run2()
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btn2 = Button(root, text='方法二', command=lambda: run2(inp1.get(), inp2.get()))
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btn2.place(relx=0.6, rely=0.4, relwidth=0.3, relheight=0.1)
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'''
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# 在窗体垂直自上而下位置60%处起，布局相对窗体高度40%高的文本框
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txt = Text(root)
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txt.place(rely=0.6, relheight=0.4)
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root.mainloop()
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