I could use some help making this Python code run faster using only Python code.

[Tim Williams]

On 20/09/2007, Python Maniac <raychorn at hotmail.com> wrote:
> I am new to Python however I would like some feedback from those who
> know more about Python than I do at this time.
>
> def scrambleLine(line):
>    s = ''
>    for c in line:
>        s += chr(ord(c) | 0x80)
>    return s
>
> def descrambleLine(line):
>    s = ''
>    for c in line:
>        s += chr(ord(c) & 0x7f)
>    return ''.join( [chr(ord(c) & 0x7f) for c in line] )
>
> def scrambleFile(fname,action=1):
>    if (path.exists(fname)):
>        try:
>            f = open(fname, "r")
>            toks = fname.split('.')
>            while (len(toks) > 2):
>                toks.pop()
>            fname = '.'.join(toks)
>            if (action == 1):
>                _fname = fname + '.scrambled'
>            elif (action == 0):
>                _fname = fname + '.descrambled'
>            if (path.exists(_fname)):
>                os.remove(_fname)
>            ff = open(_fname, "w+")
>            if (action == 1):
>                for l in f:
>                    ff.write(scrambleLine(l))
>            elif (action == 0):
>                for l in f:
>                    ff.write(descrambleLine(l))
>        except Exception, details:
>            print 'ERROR :: (%s)' % details
>        finally:
>            f.close()
>            ff.close()
>    else:
>        print 'WARNING :: Missing file "%s" - cannot continue.' % fname
>
> --


def scrambleLine(line):
   return ''.join( [chr(ord(c) | 0x80) for c in line] )

def descrambleLine(line):
    return ''.join( [chr(ord(c) & 0x7f) for c in line] )

def scrambleFile(fname,action=1):
       try:
           f = open(fname, "r")
           fname = '.'.join(fname.split('.')[:2])
           if action:
               _fname = fname + '.scrambled'
           else:
               _fname = fname + '.descrambled'
           ff = open(_fname, "w")
           if action:
               ff.write('\r\n.join([scrambleLine(l) for l in f ]))
           else :
               ff.write('\r\n.join([descrambleLine(l) for l in f ]))
           f.close()
           ff.close()
       except Exception, details:
           print 'ERROR :: (%s)' % details

HTH :)