TKinter documentation:
**http://tcl.tk/man/tcl8.6/TkCmd/pack.htm**
https://docs.python.org/3/library/tkinter.html
import tkinter
window = tkinter.Tk()
window.title("My First GUI program")
window.minsize(width=500, height=300)
#Label
my_label = tkinter.Label(text="I am a Label", font=("Airal", 24, "bold"))
my_label.pack()
window.mainloop()
def my_function(a='a',b='b',c='c'):
#Do this with a
#Then do this with b
#Finally do this with c
# Optional argument : 傳入的引數值前有加上參數名稱,所以函式會依引數名稱來取用值,傳入順序不影響結果。
my_function(a='a',b='b',c='c')