Python Programming Failure -.-

#By Staggen
#coding: iso-8859-1

from Tkinter import*
from math import*
from cmath import*
root=Tk()

class Main_Window(Frame):

    def __init__(self, parent = None):
        Frame.__init__(self,parent)
        self.parent=parent
        root.title("Matematikhjälpen")

    def equationsWindow(self):
        eqWin=Toplevel(self)
        eqWin.title("Ekvationslösare")

        etiquette1=Label(eqWin,text="Jag löser ekvationer av första och andra graden.")
        etiquette1.pack(padx=10,pady=5,expand=True,fill=BOTH)

        eqGroup=LabelFrame(eqWin,text="Inmatning",padx=5,pady=5)
        eqGroup.pack(padx=100,pady=5,fill=BOTH)

        etiquette2=Label(eqGroup,text="ax^2 + bx + c")
        etiquette2.pack(padx=10,pady=10,expand=True,fill=BOTH)
        etiquette3=Label(eqGroup,text="Ange värde på a")
        etiquette3.pack(padx=10,pady=10,expand=True,fill=BOTH)
        input1=Entry(eqGroup,width=10)
        input1.pack()
        etiquette4=Label(eqGroup,text="Ange värde på b")
        etiquette4.pack(padx=10,pady=10,expand=True,fill=BOTH)
        input2=Entry(eqGroup,width=10)
        input2.pack()
        etiquette5=Label(eqGroup,text="Ange värde på c")
        etiquette5.pack(padx=10,pady=10,expand=True,fill=BOTH)
        input3=Entry(eqGroup,width=10)
        input3.pack()

        a=input1.get()
        b=input2.get()
        c=input3.get()

        a=DoubleVar()
        b=DoubleVar()
        c=DoubleVar()

        temp1=pow(b/2,2)
        temp1=DoubleVar()

        temp2=sqrt(temp1-c)
        temp2=DoubleVar()

        X1=(-b/2)+temp1 #I tried to convert
        X2=(-b/2)-(sqrt(pow(b/2,2)-c))

        #button1=Button(eqGroup,text="Beräkna",command=equationSolver)

        eqGroup2=LabelFrame(eqWin,text="Utskrift",padx=5,pady=5)
        eqGroup2.pack(padx=100,pady=5,fill=BOTH)

        etiquette6=Label(eqGroup2,text="Svar X1 och X2 är:")
        etiquette6.pack(padx=10,pady=10,expand=True,fill=BOTH)
        etiquette7=Label(eqGroup2,text=X1)
        etiquette7.pack(padx=10,pady=10,expand=True,fill=BOTH)
        etiquette8=Label(eqGroup2,text=X2)
        etiquette8.pack(padx=10,pady=10,expand=True,fill=BOTH)

    def trianglesWindow(self):
        trWin=Toplevel(self)
        trWin.title("Geometri: Trianglar")
        etiquette2=Label(trWin,text="It works!")#Placeholder
        etiquette2.pack(padx=100,pady=100,expand=True,fill=BOTH)
        #Insert functional code here.

    def squaresWindow(self):
        sqWin=Toplevel(self)
        sqWin.title("Geometri: Fyrhörningar")
        etiquette3=Label(sqWin,text="It works!")#Placeholder
        etiquette3.pack(padx=100,pady=100,expand=True,fill=BOTH)
        #Insert functional code here.

class Main_Class(Main_Window):
    if __name__ == "__main__":
        main=Main_Window(root)

        topMenu=Menu(root)
        equations=Menu(topMenu)
        geometry=Menu(topMenu)

        root.config(menu=topMenu)

        topMenu.add_cascade(label="Ekvationer",menu=equations)
        topMenu.add_cascade(label="Geometri",menu=geometry)

        equations.add_radiobutton(label="Första- och Andragradsekvationer",command=main.equationsWindow)
        geometry.add_radiobutton(label="Trianglar",command=main.trianglesWindow)
        geometry.add_radiobutton(label="Fyrhörningar",command=main.squaresWindow)

        main.mainloop()