from tkinter import *
import shelve

class Application(Frame):
    """main application"""

    def __init__(self, master):
        super(Application, self).__init__(master)
        self.grid()
        self.configure(background = "lightblue")
        self.create_widgets()

    def create_widgets(self):
        self.load = Entry(self)
        self.load.grid(row = 0, column = 0, sticky = W)
        Button(self, text = "Load", background = "lightblue", command = self.load_bttn).grid(row = 0, column = 1, sticky = W)
        self.text = Text(self, wrap = WORD)
        self.text.grid(row = 1, column = 0, columnspan = 5, sticky = W)
        self.save = Entry(self)
        self.save.grid(row = 2, column = 0, sticky = W)
        Button(self, text = "Save", background = "lightblue", command = self.save_bttn).grid(row = 2, column = 1, sticky = W)

    def save_bttn(self):
        name = self.save.get()
        file = shelve.open(name)
        desc = self.text.get("0.0", END)
        file["0"] = desc
        file.close()
        self.text.delete(0.0, END)
        self.save.delete("0", END)

    def load_bttn(self):
        name = self.load.get()
        file = shelve.open(name)
        desc = file["0"]
        self.text.delete(0.0, END)
        self.text.insert("0.0", desc)
        self.load.delete("0", END)
        file.close()
def create_root():
    root = Tk()
    root.title("Word editor")
    #root.geometry("640x480")
    root.configure(background = "lightblue")
    return root
def main():
    root = create_root()
    Application(root)
    root.mainloop()
if __name__ == "__main__":
    main()