[Tutor] How to convert binary files back to text files?

[prasad rao]

Hello!
 I want to convert compiled files to text files.

I believe compiled files are binary files.

I am able to convert a given string  to binary and back to text.

But when it comes to a file it is proving to be impossible.

<code>


def p(a):
    s=open(a,'rb')
    for x in s:

        d=map(lambda y:chr(int(y,2)),x)
        print d
   s.close()

>>> p("C:/pp.txt")

Traceback (most recent call last):
  File "<pyshell#53>", line 1, in <module>
    p("C:/pp.txt")
  File "<pyshell#52>", line 5, in p
    d=map(lambda y:chr(int(y,2)),x)
  File "<pyshell#52>", line 5, in <lambda>
    d=map(lambda y:chr(int(y,2)),x)
ValueError: invalid literal for int() with base 2: 'f'

</code>

Please some one point where  the problem is.
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