Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.lang.python > #80708 > unrolled thread

How to recover bytes function?

Back to article view | Back to comp.lang.python

Contents

  How to recover bytes function? satishmlmlml@gmail.com - 2014-11-13 14:32 -0800
    Re: How to recover bytes function? MRAB <python@mrabarnett.plus.com> - 2014-11-13 23:12 +0000
    Re: How to recover bytes function? Chris Angelico <rosuav@gmail.com> - 2014-11-14 10:14 +1100
    Re: How to recover bytes function? sohcahtoa82@gmail.com - 2014-11-13 15:16 -0800
    Re: How to recover bytes function? Ben Finney <ben+python@benfinney.id.au> - 2014-11-14 10:37 +1100
    Re: How to recover bytes function? Cameron Simpson <cs@zip.com.au> - 2014-11-14 18:46 +1100

#80708 — How to recover bytes function?

file = open('data.bin', 'rb')
bytes = file.read()
bytes
b'\x00\x00\x00\x02spam\x00\x03?\x9d\xf3\xb6'
records = [bytes([char] * 8) for char in b'spam']
TypeError: 'bytes' object is not callable

How to recover bytes function?

[toc] | [next] | [standalone]

#80712

On 2014-11-13 22:32, satishmlmlml@gmail.com wrote:
> file = open('data.bin', 'rb')
> bytes = file.read()
> bytes
> b'\x00\x00\x00\x02spam\x00\x03?\x9d\xf3\xb6'
> records = [bytes([char] * 8) for char in b'spam']
> TypeError: 'bytes' object is not callable
>
> How to recover bytes function?
>
The simple answer:

bytes = __builtins__.bytes

The smart answer:

Don't bind to 'bytes' in the first place!

[toc] | [prev] | [next] | [standalone]

#80713

On Fri, Nov 14, 2014 at 9:32 AM,  <satishmlmlml@gmail.com> wrote:
> file = open('data.bin', 'rb')
> bytes = file.read()
> bytes
> b'\x00\x00\x00\x02spam\x00\x03?\x9d\xf3\xb6'
> records = [bytes([char] * 8) for char in b'spam']
> TypeError: 'bytes' object is not callable
>
> How to recover bytes function?

del bytes

ChrisA

[toc] | [prev] | [next] | [standalone]

#80714

On Thursday, November 13, 2014 2:32:47 PM UTC-8, satish...@gmail.com wrote:
> file = open('data.bin', 'rb')
> bytes = file.read()
> bytes
> b'\x00\x00\x00\x02spam\x00\x03?\x9d\xf3\xb6'
> records = [bytes([char] * 8) for char in b'spam']
> TypeError: 'bytes' object is not callable
> 
> How to recover bytes function?

So how many times do we have to ask you to tell us your EXPECTED output before you start actually doing that?  

'bytes' is a built-in function, but built-in function definitions can be overwritten by redeclaring them.  In this case, you're deleting the bytes function by assigning some read data to `bytes`.  Don't do that.  Either use a variable name other than 'bytes', or recover your bytes function.

-DJ

[toc] | [prev] | [next] | [standalone]

#80721

satishmlmlml@gmail.com writes:

> file = open('data.bin', 'rb')
> bytes = file.read()

These are both terrible names, not least because they clobber the
built-in objects ‘file’ and ‘bytes’.

Don't name an object for *or not only for) its data type. Instead,
choose names that convey the *purpose* for the object.

-- 
 \         “Alternative explanations are always welcome in science, if |
  `\   they are better and explain more. Alternative explanations that |
_o__) explain nothing are not welcome.” —Victor J. Stenger, 2001-11-05 |
Ben Finney

[toc] | [prev] | [next] | [standalone]

#80747

On 13Nov2014 14:32, satishmlmlml@gmail.com <satishmlmlml@gmail.com> wrote:
>file = open('data.bin', 'rb')
>bytes = file.read()
>bytes
>b'\x00\x00\x00\x02spam\x00\x03?\x9d\xf3\xb6'
>records = [bytes([char] * 8) for char in b'spam']
>TypeError: 'bytes' object is not callable
>
>How to recover bytes function?

The best way is not to use "bytes" for something else when you know you will be 
using the builtin version as well. Using the same name for two things is 
generally a bad idea.

The second, and worse, way is to see the documentation for the "builtins" 
module.

Cheers,
Cameron Simpson <cs@zip.com.au>

Madness takes its toll.  Please have exact change.
        - Janice Hanes <janice@anv.net>

[toc] | [prev] | [standalone]

Back to top | Article view | comp.lang.python

csiph-web