[Tutor] python string __add__

[tpc@csua.berkeley.edu]

I have a script that will take decimal numbers of any length as command
line arguments and output the binary equivalent.  However, I am trying to
output one long string with no spaces.  I attempted __add__ but got empty
spaces.  Is there a way for python string __add__ to output binary digits
with no spaces ?

<code>
#!/usr/bin/env python
""" a program that takes decimal numbers of any length as space-delimited
command line arguments and outputs binary numbers separated by newline"""

import sys

dict = {
           '0' : '0000',
           '1' : '0001',
           '2' : '0010',
           '3' : '0011',
           '4' : '0100',
           '5' : '0101',
           '6' : '0110',
           '7' : '0111',
           '8' : '1000',
           '9' : '1001'
       }
#x = ''
length = len(sys.argv[1:])
while length > 0:
    for i in range(length):
        w = sys.argv[-length]
        length = length - 1
        list1 = list(w)
        list1.reverse()
        length2 = len(list1)
        while length2 > 0:
            for i in range(length2):
                w = list1[length2 - 1]
                length2 = length2 - 1
#                x.__add__(dict[w])
                x = dict[w]
                print x,
            print '\n'

</code>