Convert to binary and convert back to strings

[mensanator at aol.com]

On Feb 21, 5:50 pm, "Harlin Seritt" <harlinser... at yahoo.com> wrote:
> Hi...
>
> I would like to take a string like 'supercalifragilisticexpialidocius'
> and write it to a file in binary forms -- this way a user cannot read
> the string in case they were try to open in something like ascii text
> editor. I'd also like to be able to read the binary formed data back
> into string format so that it shows the original value. Is there any
> way to do this in Python?
>
> Thanks!
>
> Harlin

import gmpy  # GNU Multi-Prceision library for Python

f = open('getty.txt','r')
s = f.read()
f.close

print
print 'source file:'
print
print s

count = 0
f = open('getty_binary.txt','w')
for c in s:
    o = ord(c)
    b = gmpy.digits(o,2)
    d = '0'*(8-len(b)) + b
    w = '%s ' % d
    f.write(w)
    count += 1
    if count % 5==0:
        f.write('\n')
f.close

f = open('getty_binary.txt','r')
s = f.readlines()
f.close

print
print 'binary file:'
print

for i in s:
    print i,
print

c = []
for k in s:
    q = k.split()
    for m in q:
        c.append(chr(int(m,2)))

new_s = ''.join(c)

print
print 'decoded binary:'
print
print new_s
print


## output


##    source file:
##
##    Four score and seven years ago,
##    our fathers brought forth on this continent
##    a new nation, conceived in liberty
##    and dedicated to the propostion that
##    all men are created equal.
##
##
##    binary file:
##
##    01000110 01101111 01110101 01110010 00100000
##    01110011 01100011 01101111 01110010 01100101
##    00100000 01100001 01101110 01100100 00100000
##    01110011 01100101 01110110 01100101 01101110
##    00100000 01111001 01100101 01100001 01110010
##    01110011 00100000 01100001 01100111 01101111
##    00101100 00001010 01101111 01110101 01110010
##    00100000 01100110 01100001 01110100 01101000
##    01100101 01110010 01110011 00100000 01100010
##    01110010 01101111 01110101 01100111 01101000
##    01110100 00100000 01100110 01101111 01110010
##    01110100 01101000 00100000 01101111 01101110
##    00100000 01110100 01101000 01101001 01110011
##    00100000 01100011 01101111 01101110 01110100
##    01101001 01101110 01100101 01101110 01110100
##    00001010 01100001 00100000 01101110 01100101
##    01110111 00100000 01101110 01100001 01110100
##    01101001 01101111 01101110 00101100 00100000
##    01100011 01101111 01101110 01100011 01100101
##    01101001 01110110 01100101 01100100 00100000
##    01101001 01101110 00100000 01101100 01101001
##    01100010 01100101 01110010 01110100 01111001
##    00001010 01100001 01101110 01100100 00100000
##    01100100 01100101 01100100 01101001 01100011
##    01100001 01110100 01100101 01100100 00100000
##    01110100 01101111 00100000 01110100 01101000
##    01100101 00100000 01110000 01110010 01101111
##    01110000 01101111 01110011 01110100 01101001
##    01101111 01101110 00100000 01110100 01101000
##    01100001 01110100 00001010 01100001 01101100
##    01101100 00100000 01101101 01100101 01101110
##    00100000 01100001 01110010 01100101 00100000
##    01100011 01110010 01100101 01100001 01110100
##    01100101 01100100 00100000 01100101 01110001
##    01110101 01100001 01101100 00101110 00001010
##
##
##    decoded binary:
##
##    Four score and seven years ago,
##    our fathers brought forth on this continent
##    a new nation, conceived in liberty
##    and dedicated to the propostion that
##    all men are created equal.