Writing a function that creates a Tkinter Entry Widget, inserts, and configs that Entry

I am building a Tkinter App that will display 40 entries and my code doesn't look good since I am writing the same 3 lines of code for each Entry.

self.entry_0_1 = GameEntry(self.background, relx=0.15, rely=0.185)
self.entry_0_1.insert(0, "0.0")
self.entry_0_1.config(validate="key", validatecommand=(reg, '%P'))

Custom GameEntry Class for customized Entry widget

class GameEntry(tk.Entry):
     def __init__(self, master=None, state='normal', font='helvetica', bg='white', fg='black', bd=7, selectborderwidth=7,relief="ridge", relx=0, rely=0, relwidth=0.175):
                  super().__init__(master=master, state=state, font=font, bg=bg, fg=fg, bd=bd, selectborderwidth=selectborderwidth, relief=relief)
                  self.place(relx=relx, rely=rely, relwidth=relwidth)

Code below is used for the .config

reg = self.root.register(callback)
def callback(input):
    regex = r"^\d*\.?\d+$"
    if re.match(regex, input):
        return True
    else:
        self.root.bell()
        return False

Code below is the function I wrote to attempted to condense the 3 lines of code that I mentioned at the top of the post

def create_insert_config_entry(root, x, y, insert_input, *args):
    cus_entry = GameEntry(root, relx=x, rely=y)
    cus_entry.insert(0, insert_input)
    cus_entry.config(validate=args[0], validatecommand=(args[1], args[2]))
    return cus_entry

Here is how I tried to use create_insert_config_entry function

self.entry_10_3 = create_insert_config_entry(self.background, 0.575, 0.885, "12.12", ["key", reg, "%P"])

Here is the error I got in the console

File "c:\Users\Mike\Desktop\code\py\main.py", line 71, in <module>
    run = gui.App()
  File "c:\Users\Mike\Desktop\code\py\gui.py", line 249, in __init__
    self.entry_10_3 = create_insert_config_entry(self.background, 0.575, 0.885, "12.12", ["key", reg, "%P"])
  File "c:\Users\Mike\Desktop\code\py\gui.py", line 244, in create_insert_config_entry
    cus_entry = GameEntry(root, relx=x, rely=y)
  File "c:\Users\Mike\Desktop\py\gui.py", line 32, in __init__
    super().__init__(master=master, state=state, font=font, bg=bg, fg=fg, bd=bd, selectborderwidth=selectborderwidth, relief=relief)
  File "C:\Users\Mike\Anaconda3\lib\tkinter\__init__.py", line 3035, in __init__
    Widget.__init__(self, master, 'entry', cnf, kw)
  File "C:\Users\Mike\Anaconda3\lib\tkinter\__init__.py", line 2572, in __init__
    self.tk.call(
_tkinter.TclError: can't invoke "entry" command: application has been destroyed