#!/usr/bin/python

import sys

splitsz = 524288
zerofill = True

if len(sys.argv) > 1:
    baseName = sys.argv[1]
    bank = 0
    try:
        with open(baseName, mode='rb') as InFile:
            file_data = InFile.read()
            sz = len(file_data)
            while sz > splitsz:
                OutFile = open("%s.b%d" % (baseName, bank), "wb")
                OutFile.write(file_data[bank*splitsz:(bank+1)*splitsz])
                OutFile.close()
                bank += 1
                sz -= splitsz
            if sz:
                OutFile = open("%s.b%d" % (baseName, bank), "wb")
                OutFile.write(file_data[bank*splitsz:])
                if zerofill:
                    l = [0]*(splitsz - sz)
                    OutFile.write(bytearray(l))
                OutFile.close()
    except:
        print("Cannot open file '%s'!" % (baseName))
else:
    print("Please give the source file name as parameter")