bin_conv.py

def binary_converter(n):
    if type(n) == str or n > 255 or n < 0:
        print 'Invalid input'
        return 'Invalid input'
    if n == 0:
        return '0'
    numb = int(n)
    result = []
    while numb != 0:
        result.append(numb%2)
        numb = numb/2
    print result
    temp = ""
    for i in range(len(result)-1, -1, -1):
        temp +=str(result[i])
    print temp
    return temp