from tkinter import *
from tkinter.ttk import Notebook

N = 25

class IterEntryField:
	def __init__(self, frame, label):
		self.frame = frame
		self.label = label
	def pack(self):
		self.valLabel = Label(self.frame, text = self.label, anchor = 'w')
		self.valLabel.pack(side = LEFT)
		self.variable = StringVar()
		self.variable.set('0')
		self.valEntry = Entry(self.frame, textvariable = self.variable)
		self.valEntry.pack(side = RIGHT)

def notebookpopup():
	zSetupWindow = Toplevel(root)
	zSetupWindow.geometry('{}x{}'.format(800, 300))
	notebook = Notebook(zSetupWindow)

	evspace = Frame(notebook)
	notebook.add(evspace, text = "Evenly spaced values")

	sOverflow = Label(evspace, text = 'Ignore this')
	sOverflow.pack()

	uevspace = Frame(notebook)
	notebook.add(uevspace, text = "Individual values")
	canvas = Canvas(uevspace)
	vsb = Scrollbar(canvas, command=canvas.yview)
	canvas.config(yscrollcommand = vsb.set)
	canvas.pack(side = LEFT, fill = BOTH, expand = True)
	vsb.pack(side = RIGHT, fill = Y, expand = True)
	entryContainer = Frame(canvas)
	entryContainer.pack(expand = True)

	frameDict = {}

	for i in range(0, N):
		frameDict[i] = Frame(entryContainer)
		frameDict[i].pack()
		entry = IterEntryField(frameDict[i], 'Z value for subfile {}'.format(i+1))
		entry.pack()
	canvas.create_window(0, 0, window = entryContainer, anchor = 'nw')
	root.update()
	print()
	canvas.config(scrollregion = canvas.bbox('all'))
	notebook.pack(fill = BOTH, expand = True)

root = Tk()
button = Button(root, text = 'new window', command = notebookpopup)
button.pack()

root.mainloop()