Contador de cédulas de dinheiro em Python

#!/usr/bin/env python
# -*- coding: utf-8 -*-
#
#  ContadorDeNotas.py
#
#  Copyright 2021  <pi@suelizeuadrian>
#
#  This program is free software; you can redistribute it and/or modify
#  it under the terms of the GNU General Public License as published by
#  the Free Software Foundation; either version 2 of the License, or
#  (at your option) any later version.
#
#  This program is distributed in the hope that it will be useful,
#  but WITHOUT ANY WARRANTY; without even the implied warranty of
#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#  GNU General Public License for more details.
#
#  You should have received a copy of the GNU General Public License
#  along with this program; if not, write to the Free Software
#  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
#  MA 02110-1301, USA.
#
#

# CRIA UMA FUNÇÃO COM UM LOOP QUE SUBTRAI UMA NOTA DO VALOR DADO COMEÇANDO
# PELA MAIOR NOTA DAS NOTAS DEFINIDAS  NA LISTA 'NOTAS', ATÉ QUE O VALOR
# RESTANTE SEJA 0
def contarnotas(notas, x, count, valor):

    print('\n\033[7m{:^50}\033[m'.format('Pegue as notas: '))
    print(f'\nR${valor:2.2f} => ', end='')

    if valor >= 1:

        for n in notas:

            while valor >= (notas[x]):
                count += 1
                valor -= (notas[x])

                if valor < (notas[x]):
                    print('[', end='')
                    print(f'{count:0>2} notas de R${(notas[x]):2.2f}', end='')
                    print(']', end=' ')
                    x += 1
                    count = 0

                if valor == 0:

                    break
            else:
                x += 1


# LISTA DAS NOTAS DISPONIVEIS E DEFINIÇÕES DAS VARIÁVEIS
notas = [100, 50, 20, 10, 5, 2, 1, 0]
x = count = valor = 0

# ENTRADA DO VALOR PELO USUAŔIO
print('\033[7m{:^50}\033[m'.format('CONTADOR DE CÉDULAS'))


print('''Este banco tem notas de:

    -R$100.00
    -R$50.00
    -R$20.00
    -R$10.00
    -R$5.00
    -R$2.00
    -R$1.00
''')

while True:

    entrada = str(input('\nQuantos Reais você deseja sacar? >>>>>>> R$'))

    if entrada.isnumeric() and entrada != '0':
        valor = int(entrada)
        break
    else:
        print('\nFavor digitar valor numérico, inteiro e maior ou igual a R$1,00')


contarnotas(notas, x, count, valor)