python程序中触发button点击_tkinter中Button事件触发的问题

#导入tkinter模块

import tkinter

tk = tkinter.Tk()

#设置窗口标题

tk.title("煤工业分析计算器")

#设置窗口大小

tk.geometry("540x220")

#添加标签

labelMad = tkinter.Label(tk,text="Mad")

labelMad.place(x=10,y=10,width=50,height=25)

labelAad = tkinter.Label(tk,text="Aad")

labelAad.place(x=65,y=10,width=50,height=25)

labelVad = tkinter.Label(tk,text="Vad")

labelVad.place(x=120,y=10,width=50,height=25)

labelFC = tkinter.Label(tk,text="FC")

labelFC.place(x=175,y=10,width=50,height=25)

labelQent_ad = tkinter.Label(tk,text="Qent.ad")

labelQent_ad.place(x=230,y=10,width=50,height=25)

labelAd = tkinter.Label(tk,text="Ad")

labelAd.place(x=285,y=10,width=50,height=25)

labelAd = tkinter.Label(tk,text="Ad")

labelAd.place(x=285,y=10,width=50,height=25)

labelVadf = tkinter.Label(tk,text="Vadf")

labelVadf.place(x=340,y=10,width=50,height=25)

labelVadf1 = tkinter.Label(tk,text="Vadf校")

labelVadf1.place(x=400,y=10,width=50,height=25)

labelAd1 = tkinter.Label(tk,text="Ad")

labelAd1.place(x=460,y=10,width=50,height=25)

labelVadf10 = tkinter.Label(tk,text="<10%")

labelVadf10.place(x=460,y=35,width=50,height=25)

labelVadf15 = tkinter.Label(tk,text="10-15%")

labelVadf15.place(x=460,y=65,width=50,height=25)

labelVadf20 = tkinter.Label(tk,text="15-20%")

labelVadf20.place(x=460,y=95,width=50,height=25)

labelVadf25 = tkinter.Label(tk,text="20-25%")

labelVadf25.place(x=460,y=125,width=50,height=25)

labelVadf30 = tkinter.Label(tk,text="25-30%")

labelVadf30.place(x=460,y=155,width=50,height=25)

labelVadf40 = tkinter.Label(tk,text="30-40%")

labelVadf40.place(x=460,y=185,width=50,height=25)

#添加文本框

entryMad=tkinter.Entry(tk,text ="")

entryMad.place(x=10,y=35,width=50,height=25)

entryAad=tkinter.Entry(tk,text ="")

entryAad.place(x=65,y=35,width=50,height=25)

entryVad=tkinter.Entry(tk,text ="")

entryVad.place(x=120,y=35,width=50,height=25)

entryFC=tkinter.Entry(tk,text ="")

entryFC.place(x=175,y=35,width=50,height=25)

entryQent_ad=tkinter.Entry(tk,text ="")

entryQent_ad.place(x=230,y=35,width=50,height=25)

entryAd=tkinter.Entry(tk,text ="")

entryAd.place(x=285,y=35,width=50,height=25)

entryVadf=tkinter.Entry(tk,text ="")

entryVadf.place(x=340,y=35,width=50,height=25)

entryVadf10=tkinter.Entry(tk,text ="")

entryVadf10.place(x=400,y=35,width=50,height=25)

entryVadf15=tkinter.Entry(tk,text ="")

entryVadf15.place(x=400,y=65,width=50,height=25)

entryVadf20=tkinter.Entry(tk,text ="")

entryVadf20.place(x=400,y=95,width=50,height=25)

entryVadf25=tkinter.Entry(tk,text ="")

entryVadf25.place(x=400,y=125,width=50,height=25)

entryVadf30=tkinter.Entry(tk,text ="")

entryVadf30.place(x=400,y=155,width=50,height=25)

entryVadf40=tkinter.Entry(tk,text ="")

entryVadf40.place(x=400,y=185,width=50,height=25)

#添加按钮

btn=tkinter.Button(tk,text="计算结果",font = 'Helvetica -80 bold')

#(font = 'Helvetica -350 bold')用来控制字体大小

btn.place(x=10,y=65,width=380,height=145)