mirror of
https://github.com/classilla/tenfourfox.git
synced 2024-09-11 02:56:06 +00:00
100 lines
2.7 KiB
Plaintext
100 lines
2.7 KiB
Plaintext
================
|
|
bitstring module
|
|
================
|
|
|
|
**bitstring** is a pure Python module designed to help make
|
|
the creation and analysis of binary data as simple and natural as possible.
|
|
|
|
Bitstrings can be constructed from integers (big and little endian), hex,
|
|
octal, binary, strings or files. They can be sliced, joined, reversed,
|
|
inserted into, overwritten, etc. with simple functions or slice notation.
|
|
They can also be read from, searched and replaced, and navigated in,
|
|
similar to a file or stream.
|
|
|
|
bitstring is open source software, and has been released under the MIT
|
|
licence.
|
|
|
|
This version supports Python 2.6 and later (including Python 3).
|
|
For Python 2.4 and 2.5 you should instead download version 1.0.
|
|
|
|
Documentation
|
|
-------------
|
|
The manual for the bitstring module is available here
|
|
<http://packages.python.org/bitstring>. It contains a walk-through of all
|
|
the features and a complete reference section.
|
|
|
|
It is also available as a PDF as part of the source download.
|
|
|
|
Installation
|
|
------------
|
|
If you have downloaded and unzipped the package then you need to run the
|
|
``setup.py`` script with the 'install' argument::
|
|
|
|
python setup.py install
|
|
|
|
You may need to run this with root privileges on Unix-like systems.
|
|
|
|
|
|
If you haven't yet downloaded the package then you can just try::
|
|
|
|
easy_install bitstring
|
|
|
|
or ::
|
|
|
|
pip install bitstring
|
|
|
|
|
|
Simple Examples
|
|
---------------
|
|
Creation::
|
|
|
|
>>> a = BitArray(bin='00101')
|
|
>>> b = Bits(a_file_object)
|
|
>>> c = BitArray('0xff, 0b101, 0o65, uint:6=22')
|
|
>>> d = pack('intle:16, hex=a, 0b1', 100, a='0x34f')
|
|
>>> e = pack('<16h', *range(16))
|
|
|
|
Different interpretations, slicing and concatenation::
|
|
|
|
>>> a = BitArray('0x1af')
|
|
>>> a.hex, a.bin, a.uint
|
|
('1af', '000110101111', 431)
|
|
>>> a[10:3:-1].bin
|
|
'1110101'
|
|
>>> 3*a + '0b100'
|
|
BitArray('0o0657056705674')
|
|
|
|
Reading data sequentially::
|
|
|
|
>>> b = BitStream('0x160120f')
|
|
>>> b.read(12).hex
|
|
'160'
|
|
>>> b.pos = 0
|
|
>>> b.read('uint:12')
|
|
352
|
|
>>> b.readlist('uint:12, bin:3')
|
|
[288, '111']
|
|
|
|
Searching, inserting and deleting::
|
|
|
|
>>> c = BitArray('0b00010010010010001111') # c.hex == '0x1248f'
|
|
>>> c.find('0x48')
|
|
(8,)
|
|
>>> c.replace('0b001', '0xabc')
|
|
>>> c.insert('0b0000')
|
|
>>> del c[12:16]
|
|
|
|
Unit Tests
|
|
----------
|
|
|
|
The 400+ unit tests should all pass for Python 2.6 and later.
|
|
|
|
----
|
|
|
|
The bitstring module has been released as open source under the MIT License.
|
|
Copyright (c) 2014 Scott Griffiths
|
|
|
|
For more information see the project's homepage on Google Code:
|
|
<http://python-bitstring.googlecode.com>
|
|
|