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Extensible HTML/XML generator, cross-platform templating language, Oracle utilities and various other tools

Project description

XIST provides an extensible HTML and XML generator. XIST is also a XML parser with a very simple and pythonesque tree API. Every XML element type corresponds to a Python class and these Python classes provide a conversion method to transform the XML tree (e.g. into HTML). XIST can be considered ‘object oriented XSLT’.

XIST also includes the following modules and packages:

  • ll.make is an object oriented make replacement. Like make it allows you to specify dependencies between files and actions to be executed when files don’t exist or are out of date with respect to one of their sources. But unlike make you can do this in a object oriented way and targets are not only limited to files.
  • ll.url provides classes for parsing and constructing RFC 2396 compliant URLs.
  • ll.orasql provides utilities for working with cx_Oracle:
    • It allows calling functions and procedures with keyword arguments.
    • Query results will be put into Record objects, where database fields are accessible as object attributes.
    • The Connection class provides methods for iterating through the database metadata.
    • Importing the modules adds support for URLs with the scheme oracle to ll.url.
  • ll.ul4c is compiler for a templating language with similar capabilities to Django’s templating language. UL4 templates are compiled to an internal bytecode format, which makes it possible to implement template renderers in other languages and makes the template code “secure” (i.e. template code can’t open or delete files).
  • ll.astyle can be used for colored terminal output (via ANSI escape sequences).
  • ll.color provides classes and functions for handling RGB color values. This includes the ability to convert between different color models (RGB, HSV, HLS) as well as to and from CSS format, and several functions for modifying and mixing colors.
  • ll.misc provides several small utility functions and classes.
  • ll.sisyphus provides classes for running Python scripts as cron jobs.
  • ll.daemon can be used on UNIX to fork a daemon process.
  • ll.xml_codec contains a complete codec for encoding and decoding XML.
  • ll.nightshade can be used to serve the output of PL/SQL functions/procedures with CherryPy.

Changes in 3.12 (released 10/21/2010)

  • The way that ll.sisyphus handles running jobs has changed. Jobs no longer create a pid file. Avoiding duplicate running jobs is done with a file lock on the script file and limiting the maximum runtime is done by forking the process and monitoring the runtime in the parent process. This means that a job that is past its maximum allowed runtime will not be killed by the next job invocation. Instead the job will kill itself.

  • A new class ll.misc.SysInfo has been added that provides host/user/python/script information. ll.sisyphus uses this new class.

  • Changed the default output of tags in ll.sisyphus log files from:

    [tag1, tag2, tag3]


  • The default location for ll.sisyphus log files has changed to ~/ll.sisyphus/projectname/jobname/.

  • ll.orasql.ForeignKey has a new method itercolumns for iterating over the columns the foreign key consists of.

  • Fixed a bug in the uls script: For remote URLs uid and gid must be resolved on the remote host.

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