Button in Class not calling Function

Question

I am trying to make a GUI app for a class I'm teaching.

I have to have several frames that can be raised above on another. To do that I slightly modified the code from this link:

Switch between two frames in tkinter

However, within the Frame and Class called "Terrain" my Save button inside the frame will not call on the MySave function within the Terrain class. I would appreciate any help.

Most of the code works fine. The buttonsave variable is where the problem begins.

import sys

if sys.version_info.major >= 3:
    from tkinter import *
    import tkinter as tk
else:
    from Tkinter import *
    import Tkinter as tk

from PIL import ImageTk, Image

import os

os.getcwd()
print(os.getcwd())

root = Tk()

class Container:
    def __init__(self, master):
        container = Frame(master)
        container.grid()
        
        self.frames = {}
        for F in (Terrain, Survey, Excavate):
            page_name = F.__name__
            frame = F(parent=container, controller=self)
            self.frames[page_name] = frame

            # put all of the pages in the same location the one on the top of the stacking order will be the one that is visible.
            
            frame.grid(row=0, column=0, sticky="nsew")

        self.show_frame("Terrain")

    def show_frame(self, page_name):
        #Show a frame for the given page name
        frame = self.frames[page_name]
        frame.tkraise()
        print("Oh Boy")

        
        
        
class Terrain(tk.Frame):
    def __init__(self, parent, controller):
        tk.Frame.__init__(self, parent)
        self.controller = controller
        bpream = ".\\Images\\Buttons\\"
        farrow = bpream+"farrow"+".png"
        #farrow = farrow.resize((25, 25), Image.ANTIALIAS)
        self.farrow = PhotoImage(file = farrow)
        fbutton = tk.Button(self, image = self.farrow, borderwidth = 0, command=lambda: controller.show_frame("Survey"))        
        fbutton.grid(row = 12, column = 2)
       
         # The Name, Answer and Save Boxes    
        ans = tk.Text(self, width = 30, height = 20, borderwidth = 5)
        ans.grid(row = 1, column = 7, columnspan = 2, rowspan = 5, padx = 10, pady = 10)
        ans.insert(1.0, "Type your answers here")

        buttonsave = tk.Button(self, text = "Save", padx = 20, pady = 5, command = lambda:[self.mySave, self.switch])
        buttonsave.grid(row = 6, column = 8)

        buttonedit = tk.Button(self, text = "Edit", padx = 20, pady = 5, command = self.switch, state = 'disabled')
        buttonedit.grid(row = 6, column = 7)   
        
    # Save the Name and Answers
    def mySave(self):
        print("Why you click me?")
        answer = ans.get("1.0",'end-1c')
        namer = name.get("1.0",'end-1c')
        print(namer)
        print(answer)
        
    #Toggle the Edit and Save Functions
        
    def switch(self):
        print("Who did this?")
        if  buttonsave['state'] == 'normal':
            buttonsave['state'] = 'disabled'
            buttonedit['state'] = 'normal'
            ans['state'] = 'disabled'
            name['state'] = 'disabled'
        else:
            buttonsave['state'] = 'normal'
            buttonedit['state'] = 'disabled'
            ans['state'] = 'normal'
            name['state'] = 'normal'
                        
        
        
        
        
        
        
class Survey(tk.Frame):
    def __init__(self, parent, controller):
        tk.Frame.__init__(self, parent)
        self.controller = controller
        bpream = ".\\Images\\Buttons\\"
        farrow = bpream+"farrow"+".png"
        #farrow = farrow.resize((25, 25), Image.ANTIALIAS)
        self.farrow = PhotoImage(file = farrow)
        self.fbutton = tk.Button(self, image = self.farrow, borderwidth = 0, command=lambda: controller.show_frame("Excavate"))        
        self.fbutton.grid(row = 12, column = 2)
        barrow = bpream+"barrow"+".png"
        #barrow = barrow.resize((25, 25), Image.ANTIALIAS)
        self.barrow = PhotoImage(file = barrow)
        self.bbutton = tk.Button(self, image = self.barrow, borderwidth = 0, command=lambda: controller.show_frame("Terrain"))        
        self.bbutton.grid(row = 12, column = 1)  
        
class Excavate(tk.Frame):
    def __init__(self, parent, controller):
        tk.Frame.__init__(self, parent)
        self.controller = controller
        bpream = ".\\Images\\Buttons\\"
        barrow = bpream+"barrow"+".png"
        #barrow = barrow.resize((25, 25), Image.ANTIALIAS)
        self.barrow = PhotoImage(file = barrow)
        self.bbutton = tk.Button(self, image = self.barrow, borderwidth = 0, command=lambda: controller.show_frame("Survey"))        
        self.bbutton.grid(row = 12, column = 1)       
        
exc = Container(root)        
root.mainloop()