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