Python library for calculating CRC16
CRC is a way of detecting accidental changes in data storage or transmission. There are many variants of CRC and CRC16, in particular. This library calculates only CRC16 (16-bit codes) and the only supported variant at the moment is CRC-CCITT (XModem).
If you want to know more about CRC, http://wikipedia.org/wiki/Cyclic_redundancy_check is a good place to start.
If you want other variants of CRC16 supported, please make a request at http://code.google.com/p/pycrc16/issues
Source codes are hosted at https://github.com/gennady/pycrc16 If you want to contribute to this library, create a fork, make you changes and then create a pull request. Any help is appreciated.
Installation
On Windows you can use precompiled binaries which can be found at http://code.google.com/p/pycrc16/downloads
On Linux and other operation systems you should compile the library from the source codes. To do this on Linux use following steps:
download source tarball, e.g. crc16-0.1.1.tar.gz, from http://code.google.com/p/pycrc16/downloads
extract it with command:
tar -xzf crc16-0.1.1.tar.gz
compile and install the library:
cd crc16-0.1.1 python setup.py build sudo python setup.py install
you will need the administrative privileges to execute the last command.
After installation you can run unit tests to make sure that the library works fine. Execute:
python -m crc16.test
Usage
In Python 3:
import crc16 print(crc16.crc16xmodem(b'123456789'))
In Python 2 you should use strings instead of binary data:
import crc16
print(crc16.crc16xmodem('123456789'))
You can also calculate CRC gradually:
import crc16 crc = crc16.crc16xmodem(b'1234') crc = crc16.crc16xmodem(b'56789', crc) print(crc)
Other projects
There are a number of projects and libraries for CRC calculation. See for example:
binascii.crc32 in the standart Python library
pycrc (http://www.tty1.net/pycrc)
crcmod (http://pypi.python.org/pypi/crcmod)
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Metadata
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Release files for pycrc16 0.1.2
For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.
Source distribution (sdist)
| File | Size | Uploaded | |
|---|---|---|---|
| pycrc16-0.1.2.tar.gz | 10.9 kB | Details |
Built distribution (wheel)
| File | Interpreter | ABI | Platform | Reset |
|---|---|---|---|---|
| pycrc16-0.1.2-cp310-cp310-macosx_12_0_arm64.whl | CPython 3.10 | CPython 3.10 | macOS 12.0+ ARM64 | Details |
Total release size: 22.2 kB
Release files / pycrc16-0.1.2.tar.gz
| Download URL | pycrc16-0.1.2.tar.gz |
|---|---|
| Size | 10.9 kB |
| Tags | Source |
|
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No |
| Uploaded via |
twine/4.0.1 CPython/3.10.0
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Release files / pycrc16-0.1.2-cp310-cp310-macosx_12_0_arm64.whl
| Download URL | pycrc16-0.1.2-cp310-cp310-macosx_12_0_arm64.whl |
|---|---|
| Size | 11.4 kB |
| Tags | CPython 3.10 macOS 12.0+ ARM64 |
|
SHA-256 checksum How to use checksums |
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Uploaded using Trusted Publishing? What is trusted publishing? |
No |
| Uploaded via |
twine/4.0.1 CPython/3.10.0
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