1 file was added to this release more than 14 days after its initial publication. Inspect the release files before installing.
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)
1 maintainer
Release files for crc16 0.1.1
For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.
File added late
1 file was uploaded more than 14 days after the first file in this release.
While project maintainers occasionally add legitimate files to an existing release, late additions can also indicate a security compromise.
We recommend inspecting the release files before installing.
Source distributions (sdists)
| File | Size | Uploaded | |
|---|---|---|---|
| crc16-0.1.1.zip | 20.9 kB | Details | |
| crc16-0.1.1.tar.gz | 9.6 kB | Details |
Built distributions (wheels)
| File | Reset | |||
|---|---|---|---|---|
| crc16-0.1.1.win32-py3.3.exe | Details | |||
| crc16-0.1.1.win32-py3.2.exe | Details | |||
| crc16-0.1.1.win32-py3.1.exe | Details | |||
| crc16-0.1.1.win32-py2.7.exe | Details | |||
| crc16-0.1.1.win32-py2.6.exe | Details |
Total release size: 1.1 MB
Release files / crc16-0.1.1.zip
| Download URL | crc16-0.1.1.zip |
|---|---|
| Size | 20.9 kB |
| Tags | Source |
|
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No |
Release files / crc16-0.1.1.tar.gz
| Download URL | crc16-0.1.1.tar.gz |
|---|---|
| Size | 9.6 kB |
| Tags | Source |
|
SHA-256 checksum How to use checksums |
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No |
Release files / crc16-0.1.1.win32-py3.3.exe
File added late
This file was uploaded more than 14 days after the first file in this release.
While project maintainers occasionally add legitimate files to an existing release, late additions can also indicate a security compromise.
We recommend inspecting the release file before installing.
| Download URL | crc16-0.1.1.win32-py3.3.exe |
|---|---|
| Size | 202.8 kB |
| Tags | Source |
|
SHA-256 checksum How to use checksums |
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No |
Release files / crc16-0.1.1.win32-py3.2.exe
| Download URL | crc16-0.1.1.win32-py3.2.exe |
|---|---|
| Size | 208.2 kB |
| Tags | Source |
|
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Release files / crc16-0.1.1.win32-py3.1.exe
| Download URL | crc16-0.1.1.win32-py3.1.exe |
|---|---|
| Size | 208.2 kB |
| Tags | Source |
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Release files / crc16-0.1.1.win32-py2.7.exe
| Download URL | crc16-0.1.1.win32-py2.7.exe |
|---|---|
| Size | 208.2 kB |
| Tags | Source |
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Release files / crc16-0.1.1.win32-py2.6.exe
| Download URL | crc16-0.1.1.win32-py2.6.exe |
|---|---|
| Size | 208.2 kB |
| Tags | Source |
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