main.py

#!/usr/bin/python
import Tkinter as tk

class Application(tk.Frame):
    def __init__(self, master=None):
        tk.Frame.__init__(self, master)

        ## create a menu
        # top level
        menubar = tk.Menu(self.master)

        # file menu
        progress_menu = tk.Menu(menubar, tearoff=0)
        progress_menu.add_command(label="Reload progress from file")
        progress_menu.add_command(label="Save progress to file")
        progress_menu.add_command(label="Start fresh")
        progress_menu.add_separator()
        progress_menu.add_command(label="Exit", command=self.master.quit)

        # add menus to toplevel and display
        menubar.add_cascade(label="Progress", menu=progress_menu)
        self.master.config(menu=menubar)

        ## editor group 
        # widgets
        editor_group = tk.Frame(self)

        sbars = []
        for i in range(2):
            sbars.append(tk.Scrollbar(editor_group))

        self.lesson_text = tk.Text(editor_group, bg="#FFFFD9", yscrollcommand=sbars[0].set)
        self.lesson_text.insert(tk.END, "Lesson text.")
        self.lesson_text.config(state=tk.DISABLED)
        self.editor = tk.Text(editor_group, yscrollcommand=sbars[1].set)
        button_frame = tk.Frame(editor_group)

        self.run_button = tk.Button(button_frame, text="Run")
        self.run_button.config(bg='green')
        self.stop_button = tk.Button(button_frame, text="Stop")
        self.stop_button.config(bg='red')

        sbars[0].config(command=self.lesson_text.yview)
        sbars[1].config(command=self.editor.yview)

        # layout
        for i in range(2):
            editor_group.grid_rowconfigure(i, weight=1)
        editor_group.grid_columnconfigure(0, weight=1)
        self.lesson_text.grid(row=0, column=0, sticky=tk.N + tk.S + tk.E + tk.W, padx=5, pady=5)
        self.editor.grid(row=1, column=0, sticky=tk.N + tk.S + tk.E + tk.W, padx=5, pady=(0,5))
        h = editor_group.winfo_height()
        self.lesson_text.config(height=h/10)
        button_frame.grid(row=2, column=0, sticky=tk.E+tk.W+tk.S)
        self.run_button.pack(fill=tk.X, expand=1, pady=(0,2), padx=5)
        self.stop_button.pack(fill=tk.X, expand=1, pady=(0,5),padx=5)
        sbars[0].grid(row=0, column=1, sticky=tk.N+tk.S, padx=(0,5), pady=5)
        sbars[1].grid(row=1, column=1, sticky=tk.N+tk.S, padx=(0,5), pady=(0,5))

        ## lesson group 
        lesson_group = tk.Frame(self, padx=5, pady=5)

        self.lesson_listbox = tk.Listbox(lesson_group)
        self.lesson_listbox.insert(tk.END, "Sandbox Mode") # at index 0
        for i in range(1, 6): # 5 lessons
            self.lesson_listbox.insert(tk.END, "Lesson " + str(i))
        self.lesson_listbox.select_set(1) # start with lesson 1 selected

        self.selectButton = tk.Button(lesson_group, text='Select Lesson', command=self.select_lesson, bg='skyblue')

        ## layout
        # main frame layout 
        self.pack(fill=tk.BOTH, expand=1)

        # layout of widgets in main frame
        self.grid_rowconfigure(0, weight=1)
        self.grid_columnconfigure(1, weight=1)
        lesson_group.grid(row=0, column=0, sticky=tk.N + tk.S, padx=5, pady=(5,10))
        editor_group.grid(row=0, column=1, sticky=tk.N + tk.E + tk.S + tk.W, padx=(0,10), pady=(5,10))

        # layout of widgets in lesson group
        lesson_group.grid_rowconfigure(0, weight=1)
        lesson_group.grid_columnconfigure(0, weight=1)
        self.lesson_listbox.grid(row=0, column=0, sticky=tk.N + tk.S + tk.E + tk.W)
        self.selectButton.grid(row=1, column=0, sticky=tk.S, pady=5)


    def select_lesson(self):
        #self.test_v.set(self.lesson_listbox.curselection())
        pass


app = Application()
app.master.title('Prototype')
app.master.geometry(("%dx%d")%(809,500))
app.mainloop()