Exercicio para converter numero decimal em binário

converte-binario.py

# Usage: converte-binario.py [OPTIONS, [ARGS]]
# converte um valor decimal para binario
#
# Options:
#  --version             show program's version number and exit
#  -h, --help            show this help message and exit
#  -d DECIMAL, --decimal=DECIMAL

# PROGRAMA PRINCIPAL
PROG = "converte-binario"
VERSION = "0.0.1"
description = "converte um valor decimal para binario"
parser = OptionParser(usage='usage: %prog [OPTIONS, [ARGS]]',
                          version='%s %s' % (PROG, VERSION),
                          description=description)

parser.add_option("-d", "--decimal", action=None, help="Valor decimal")
  
(options, args) = parser.parse_args()

value = int(options.decimal)
tmp = []

while(value > 0):
    bit = str(value % 2)
    value = int(value/2)
    tmp.append(bit)

i = len(tmp) - 1
result = []
while(i >= 0):
    result.append(tmp[i])
    i = i - 1

print("".join(result))