from tkinter import *
import tkinter.messagebox

def isSet():
    radioValue = radioBoxValue.get()
    tkinter.messagebox.showinfo("You clicked ", radioValue)

def changeLabel():
    tst = "Thanks for the click " + inputBoxValue.get()
    textOfLabel.set(tst)
    inputBox.delete(0, END)
    inputBox.insert(0, "My name is Matthias")


app = Tk()
app.title("This is the title")
app.geometry("640x480+100+100")

textOfLabel = StringVar()
textOfLabel.set("This is a label")

firstLabel = Label(app, textvariable = textOfLabel)
firstLabel.grid(row=0, column=0, sticky=W)

checkBoxValue = IntVar()
checkBox1 = Checkbutton(app, variable = checkBoxValue, text = "Happy?")
checkBox1.grid(row=1, column=0, sticky=W)

inputBoxValue = StringVar()
inputBox = Entry(app, textvariable=inputBoxValue)
inputBox.grid(row=2, column=0, sticky=W)

radioBoxValue = StringVar()
radioBoxValue.set(None)
#For some reason you can only use ONE name for ALL your radioboxes. In other words. Every radiobox is named
#radioBox = Radiobutton(app, ...........blabla)
#each radioBox has its own position on the grid though which has to be set immediately after spawning
#the radiobutton.

#spawning
radioBox = Radiobutton(app, text="Single", value = "Single!", variable = radioBoxValue, command=isSet)
#setting location
radioBox.grid(row=4, column=0, sticky=W)
#spawning
radioBox = Radiobutton(app, text="Married", value = "Married!", variable = radioBoxValue, command=isSet)
#setting location
radioBox.grid(row=4, column=1, sticky=W)

button1 = Button(app, text='Click me!', width = 20, command = changeLabel)
button1.grid(row=5, column=2, sticky=W)

app.mainloop()