bag library

bag contains code for many purposes, which I find myself reusing in multiple programs -- so this code must be version-controlled. I use SQLAlchemy and Pyramid a lot.

Documentation is at http://docs.nando.audio/bag/latest/

The code is at https://github.com/nandoflorestan/bag where you can do your bug reports and pull requests.

This version of bag was published with releaser.

Most important library contents

• bag.spreadsheet -- Import CSV and Excel spreadsheets based on headers on the first row. There is also a buffered CSV writer for outputting CSV in a web app.
• bag.email_validator -- The ultimate functions for email validation and domain validation, as well as an email address harvester.
• bag.pathlib_complement -- A Path subclass that does what pathlib doesn't do.
• bag.subcommand -- Use argh to dispatch to subcommands with their command-line arguments.
• bag.web.burla -- Powerful URL generation independent of web frameworks, working in Python and in the client (Javascript) too. Also provided is Pyramid integration for it.
• bag.web.transecma -- Complete solution for javascript internationalization. Compatible with jquery templates. Includes transecma.js.
• bag.web.flash_msg has been removed in favor of a better module in the kerno library. It defines a rich class for UI messages to be stored in the HTTP session.

If you use the Pyramid web framework

• bag.web.pyramid.angular_csrf -- Make Pyramid play ball with AngularJS to achieve CSRF protection.
• bag.web.pyramid.locale -- Easily enable and disable locales, let users switch languages, and use the browser's languages by default.
• bag.web.pyramid.nav -- Simple web menu system (navigation).
• bag.web.pyramid.plugins_manager -- Make your Pyramid app extensible through plugins.
• bag.web.pyramid.resources
• bag.web.exceptions -- The Problem exception is good for throwing from a service layer, then caught in the view layer to be shown to the user. -- Functions and base resources for context objects (Pyramid traversal).
• bag.web.pyramid.routes -- Make Pyramid routes and the route_path() function available to JS in the client.

If you use SQLAlchemy

• bag.sqlalchemy.context -- Convenient SQLAlchemy initialization, at last.
• bag.sqlalchemy.mediovaigel -- Complete solution for database fixtures using SQLAlchemy.
• bag.sqlalchemy.tricks -- Various SQLAlchemy gimmicks, including a great base model class.

Commands

• delete_old_branches -- Deletes git branches that have already been merged onto the current branch. Optionally, filter the branches by age (in days).
• reorder_po -- Reorders .po files (usually after transifex messes up the order of the translations in them) so the diff is always readable.
• replace_text -- A simple command to replace text in many files, without worrying about regular expressions.

Less important library contents

• bag.check_rst -- Verifies reStructuredText content for correctness.
• bag.console -- Functions for user interaction at the console.
• bag.corrupt_image -- Read image files and do something if they are corrupt.
• bag.file_existence_manager -- Tools for finding duplicate files using hashes.
• bag.log -- Convenient logging initialization.
• bag.html -- Encode and decode HTML and XML entities.
• bag.more_codecs -- Got text in some weird encoding that Python doesn't know? OK, use iconv to decode it.
• bag.show_progress -- Don't leave your user wondering if your program is hanging; print the progress every few seconds.
• bag.streams -- Functions that use streams (open files).
• bag.text -- Functions for working with unicode strings.
• bag.text.words -- Contains lists of nouns and adjectives and can generate a random combination words -- good for generating funny test data.
• bag.time -- Functions to make it easier to work with datetimes. Includes a JSON encoder that supports time, datetime and Decimal.