How to access Entry field value in root window from Toplevel window?

As noted by Menno above, adjusting the window 2 function to pass email_box.get() allows the value to be passed between the windows.

First file code:

from tkinter import *
from elt2 import window2

root = Tk()

email_box = Entry(root, width=35, borderwidth=2)
email_box.grid(row=0, column=1, pady=(5, 0), padx=10)
pass_box = Entry(root, width=35, borderwidth=2)
pass_box.grid(row=1, column=1)


def submitpass():
    if pass_box.get() == "test":
        passshow = Label(root, text=" CORRECT ", background="#2E0063", fg='white')
        passshow.grid(row=3, column=0, columnspan=2, padx=8)
        window2(email_box.get())
    else:
        passshow = Label(root, text="INCORRECT", background="#2E0063", fg='white')
        passshow.grid(row=3, column=0, columnspan=2, padx=8)


checkbtn = Button(root, text="CHECK", command=submitpass)
checkbtn.grid(row=2, column=1, columnspan=2, padx=10, pady=5, ipadx=45)


root.mainloop()

Second file code:

from tkinter import *


def window2(entry_value):
    root2 = Toplevel()
    root2.geometry("250x75")
    entry_take = Entry(root2)
    entry_take.insert(0, entry_value)
    entry_take.pack()
    root2.mainloop()