This is a pre-production deployment of Warehouse, however changes made here WILL affect the production instance of PyPI.
Latest Version Dependencies status unknown Test status unknown Test coverage unknown
Project Description

numerical bytearray - extends bytearray into numpy-like, 2d array

REQUIRES PYTHON3.1

QUICK TEST: $ python3.1 setup.py build dev –quicktest

DESCRIPTION: numerical bytearray - extends bytearray into numpy-like, 2d array

RECENT CHANGELOG: 20091224 - modularized package - fix install issues - added sdist check 20091209 - improved documentation 20091205 - moved source code to c++ 20091116 - package integrated

DEMO USAGE:
>>> from numbytes import *
>>> ## subclass numbytes
>>> class numbytes2(numbytes): pass
>>> ## create bytearray containing 3x4 array of longlong
>>> integers = numbytes2('i', range(12), shape0 = 3, shape1 = 4)
>>> print( integers.debug() )
<class 'numbytes.numbytes2'> i refcnt=4 tcode=i tsize=8 offset=0 shape=<3 4> stride=<4 1> transposed=0
[[          0           1           2           3]
[          4           5           6           7]
[          8           9          10          11]]
>>> ## modify underlying bytearray
>>> integers.bytes()[0] = 0xff; integers.bytes()[1] = 0xff
>>> print( integers.bytes() )
bytearray(b'\xff\xff\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x03\x00\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\x05\x00\x00\x00\x00\x00\x00\x00\x06\x00\x00\x00\x00\x00\x00\x00\x07\x00\x00\x00\x00\x00\x00\x00\x08\x00\x00\x00\x00\x00\x00\x00\t\x00\x00\x00\x00\x00\x00\x00\n\x00\x00\x00\x00\x00\x00\x00\x0b\x00\x00\x00\x00\x00\x00\x00')
>>> print( integers.debug() )
<class 'numbytes.numbytes2'> i refcnt=4 tcode=i tsize=8 offset=0 shape=<3 4> stride=<4 1> transposed=0
[[      65535           1           2           3]
[          4           5           6           7]
[          8           9          10          11]]
>>> ## bytearray as sequence
>>> print( 2 in integers )
True
>>> print( integers.count(2) )
1
>>> print( integers.index(2) )
2
>>> for aa in integers.rows(): print( aa )
[[      65535           1           2           3]]
[[          4           5           6           7]]
[[          8           9          10          11]]
>>> ## slice
>>> print( integers[1:, 2:].debug() )
<class 'numbytes.numbytes2'> i refcnt=3 tcode=i tsize=8 offset=6 shape=<2 2> stride=<4 1> transposed=0
[[          6           7]
[         10          11]]
>>> ## transpose
>>> print( integers.T()[2:, 1:].debug() )
<class 'numbytes.numbytes2'> i refcnt=3 tcode=i tsize=8 offset=6 shape=<2 2> stride=<1 4> transposed=1
[[          6          10]
[          7          11]]
>>> ## reshape
>>> print( integers.reshape(2, -1).debug() )
<class 'numbytes.numbytes2'> i refcnt=3 tcode=i tsize=8 offset=0 shape=<2 6> stride=<6 1> transposed=0
[[      65535           1           2           3           4           5]
[          6           7           8           9          10          11]]
>>> ## setslice
>>> integers.T()[2:, 1:] = range(4); print( integers )
[[      65535           1           2           3]
[          4           5           0           2]
[          8           9           1           3]]
>>> ## almost all arithmetic operations are inplace - use copy to avoid side-effects
>>> ## recast to double
>>> floats = integers.recast('f') / 3; print( floats )
[[        21845      0.333333      0.666667             1]
[      1.33333       1.66667             0      0.666667]
[      2.66667             3      0.333333             1]]
>>> ## copy
>>> print( floats.copy() + integers[0, :] )
[[        87380       1.33333       2.66667             4]
[      65536.3       2.66667             2       3.66667]
[      65537.7             4       2.33333             4]]
>>> ## inplace
>>> print( floats + integers[:, 0] )
[[        87380       65535.3       65535.7         65536]
[      5.33333       5.66667             4       4.66667]
[      10.6667            11       8.33333             9]]
>>> ## inplace
>>> print( floats - integers[:, 0] )
[[        21845      0.333333      0.666667             1]
[      1.33333       1.66667             0      0.666667]
[      2.66667             3      0.333333             1]]
>>> ## inplace
>>> print( floats ** 2 )
[[  4.77204e+08      0.111111      0.444444             1]
[      1.77778       2.77778             0      0.444444]
[      7.11111             9      0.111111             1]]
>>> ## inplace
>>> print( floats.sqrt() )
[[        21845      0.333333      0.666667             1]
[      1.33333       1.66667             0      0.666667]
[      2.66667             3      0.333333             1]]
>>> ## the only inplace exceptions are logical comparisons, which return new char arrays
>>> print( floats )
[[        21845      0.333333      0.666667             1]
[      1.33333       1.66667             0      0.666667]
[      2.66667             3      0.333333             1]]
>>> ## copy as char
>>> print( floats == floats[:, 1] )
[[ 00  01  00  00]
[ 00  01  00  00]
[ 00  01  00  00]]
>>> ## copy as char
>>> print( floats > 1.5 )
[[ 01  00  00  00]
[ 01  01  00  00]
[ 01  01  00  00]]
Release History

Release History

2009.12.24.py3k.cpp

This version

History Node

TODO: Figure out how to actually get changelog content.

Changelog content for this version goes here.

Donec et mollis dolor. Praesent et diam eget libero egestas mattis sit amet vitae augue. Nam tincidunt congue enim, ut porta lorem lacinia consectetur. Donec ut libero sed arcu vehicula ultricies a non tortor. Lorem ipsum dolor sit amet, consectetur adipiscing elit.

Show More

History Node

TODO: Figure out how to actually get changelog content.

Changelog content for this version goes here.

Donec et mollis dolor. Praesent et diam eget libero egestas mattis sit amet vitae augue. Nam tincidunt congue enim, ut porta lorem lacinia consectetur. Donec ut libero sed arcu vehicula ultricies a non tortor. Lorem ipsum dolor sit amet, consectetur adipiscing elit.

Show More

History Node

TODO: Figure out how to actually get changelog content.

Changelog content for this version goes here.

Donec et mollis dolor. Praesent et diam eget libero egestas mattis sit amet vitae augue. Nam tincidunt congue enim, ut porta lorem lacinia consectetur. Donec ut libero sed arcu vehicula ultricies a non tortor. Lorem ipsum dolor sit amet, consectetur adipiscing elit.

Show More

History Node

TODO: Figure out how to actually get changelog content.

Changelog content for this version goes here.

Donec et mollis dolor. Praesent et diam eget libero egestas mattis sit amet vitae augue. Nam tincidunt congue enim, ut porta lorem lacinia consectetur. Donec ut libero sed arcu vehicula ultricies a non tortor. Lorem ipsum dolor sit amet, consectetur adipiscing elit.

Show More

History Node

TODO: Figure out how to actually get changelog content.

Changelog content for this version goes here.

Donec et mollis dolor. Praesent et diam eget libero egestas mattis sit amet vitae augue. Nam tincidunt congue enim, ut porta lorem lacinia consectetur. Donec ut libero sed arcu vehicula ultricies a non tortor. Lorem ipsum dolor sit amet, consectetur adipiscing elit.

Show More

2009.11.19.py3k.cpp

History Node

TODO: Figure out how to actually get changelog content.

Changelog content for this version goes here.

Donec et mollis dolor. Praesent et diam eget libero egestas mattis sit amet vitae augue. Nam tincidunt congue enim, ut porta lorem lacinia consectetur. Donec ut libero sed arcu vehicula ultricies a non tortor. Lorem ipsum dolor sit amet, consectetur adipiscing elit.

Show More

2009.11.16.py3k.cpp

History Node

TODO: Figure out how to actually get changelog content.

Changelog content for this version goes here.

Donec et mollis dolor. Praesent et diam eget libero egestas mattis sit amet vitae augue. Nam tincidunt congue enim, ut porta lorem lacinia consectetur. Donec ut libero sed arcu vehicula ultricies a non tortor. Lorem ipsum dolor sit amet, consectetur adipiscing elit.

Show More

Download Files

Download Files

TODO: Brief introduction on what you do with files - including link to relevant help section.

File Name & Checksum SHA256 Checksum Help Version File Type Upload Date
numbytes-2009.12.24.py3k.cpp.tar.gz (80.4 kB) Copy SHA256 Checksum SHA256 Source Dec 29, 2009

Supported By

WebFaction WebFaction Technical Writing Elastic Elastic Search Pingdom Pingdom Monitoring Dyn Dyn DNS HPE HPE Development Sentry Sentry Error Logging CloudAMQP CloudAMQP RabbitMQ Heroku Heroku PaaS Kabu Creative Kabu Creative UX & Design Fastly Fastly CDN DigiCert DigiCert EV Certificate Rackspace Rackspace Cloud Servers DreamHost DreamHost Log Hosting