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bitmath is a Python module I wrote which simplifies many facets of interacting with file sizes in various units as python objects. A few weeks ago version 1.3.1 was released with a few small updates.
Updates
- New function: bitmath.parse_string_unsafe(), a less strict version of bitmath.parse_string()
This new function accepts inputs using non-standard prefix units such as single-letter, or mis-capitalized units. For example,
parse_stringwill not accept a short unit like ‘100k‘, whereasparse_string_unsafewill gladly accept it:- Documentation Refresh: The project documentation has been thoroughly reviewed and refreshed.
Several broken, moved, or redirecting links have been fixed. Wording and examples are more consistent. The documentation also lands correctly when installed via package.
Getting bitmath-1.3.1
bitmath-1.3.1 is available through several installation channels:
Ubuntu builds have not been prepared yet due to issues I’ve been having with Launchpad and new package versions.
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bitmath is a Python module I wrote for working with file size units (ex:
12GiB,64kB) as objects. You can use them just like you would use regular numbers in python. It’s full of other functionality as well. Objects have native ‘convert to $unit‘ methods, support native arithmetic, are sortable, and include a ‘best human readable prefix’ method.Since March 2014, bitmath had only been available via PyPi and Fedora/EPEL repositories. Now, as of July 2nd 2016, bitmath is natively available to Ubuntu users by means of a new Personal Package Archive (PPA) hosting bitmath builds for Xenial, Wily, Vivid, Trusty, and Precise.
Ubuntu users can install bitmath in the following way:
Ubuntu support wouldn’t have happened if GitHub user hkraal hadn’t submitted an issue. Thanks Henk for getting the fire lit!
- Check out bitmath on GitHub
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It’s been quite a while since I’ve posted any bitmath updates (bitmath is a Python module I wrote which simplifies many facets of interacting with file sizes in various units as python objects) . In fact, it seems that the last time I wrote about bitmath here was back in 2014 when 1.0.8 was released! So here is an update covering everything post 1.0.8 up to 1.3.0.
New Features
- A command line tool,
bitmath, you can use to do simple conversions right in your shell [docs]! - New utility function bitmath.parse_string for parsing a human-readable string into a bitmath object
- New utility: argparse integration: bitmath.BitmathType. Allows you to specify arguments as bitmath types
- New utility: progressbar integration: bitmath.integrations.BitmathFileTransferSpeed. A more functional file transfer speed widget
- New bitmath module function: bitmath.query_device_capacity(). Create bitmath.Byte instances representing the capacity of a block device
- This my favorite enhancement
- In an upcoming blog post I’ll talk about just how cool I thought it was learning how to code this feature
- Conceptual and practical implementation topics included
- The bitmath.parse_string() function now can parse ‘octet’ based units
- Enhancement requested in #53 parse french unit names by walidsa3d.
- New utility function: bitmath.best_prefix()
- Return an equivalent instance which uses the best human-readable prefix-unit to represent it
- This is way cooler than it may sound at the surface, I promise you
Bug Fixes
- #49 – Fix handling unicode input in the bitmath.parse_string function. Thanks drewbrew!
- #50 – Update the setup.py script to be python3.x compat. Thanks ssut!
- #55 “best_prefix for negative values”. Now bitmath.best_prefix() returns correct prefix units for negative values. Thanks mbdm!
Misc
To help with the Fedora Python3 Porting project, bitmath now comes in two variants in Fedora/EPEL repositories (BZ1282560). The Fedora and EPEL updates are now in the repos. TIP:
python2-bitmathwill obsolete thepython-bitmathpackage. Do adnf/yum‘update‘ operation just to make sure you catch it.The PyPi release has already been pushed to stable.
Back in bitmath-1.0.8 we had 150 unit tests. The latest release has almost 200! Go testing!
:confetti: - A command line tool,
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bitmath-1.0.8-1 was published on 2014-08-14.
Major Updates
- bitmath has a proper documentation website up now on Read the Docs, check it out:
- bitmath is now Python 3.x compatible
- bitmath is now included in the Extra Packages for Enterprise Linux EPEL6 and EPEL7repositories
- merged 6 pull requests from 3 contributors
Bug Fixes
- fixed some math implementation bugs
Changes
Added Functionality
- best-prefix guessing: automatic best human-readable unit selection
- support for bitwise operations
- formatting customization methods (including plural/singular selection)
- exposed many more instance attributes (all instance attributes are usable in custom formatting)
- a context manager for applying formatting to an entire block of code
- utility functions for sizing files and directories
- add instance properties equivalent to instance.to_THING() methods
Project
Tests
- Test suite is now implemented using Python virtualenv’s for consistency across across platforms
- Test suite now contains 150 unit tests. This is 110 more tests than the previous major release (1.0.4-1)
- Test suite now runs on EPEL6 and EPEL7
- Code coverage is stable around 95-100%
Examples Below the Fold
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Technitribe by Tim Bielawa is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.