title: Release Notes for v2.5 prev_title: Change Log prev_url: change_log.html next_title: Release Notes for v2.4 next_url: release-2.4.html Python-Markdown 2.5 Release Notes ================================= We are pleased to release Python-Markdown 2.5 which adds a few new features and fixes various bugs. See the list of changes below for details. Python-Markdown version 2.5 supports Python versions 2.7, 3.2, 3.3, and 3.4. Backwards-incompatible Changes ------------------------------ * Python-Markdown no longer supports Python version 2.6. You must be using Python versions 2.7, 3.2, 3.3, or 3.4. While Python-Markdown is no longer tested against Python 2.6, you may be able to get it working if you install a copy of [importlib] which has been backported for Python 2.6. However, the developers of Python-Markdown offer no guarentees in that situation. [importlib]: https://pypi.python.org/pypi/importlib * The `force_linenos` config key on the [CodeHilite Extension] has been **deprecated** and will raise a `KeyError` if provided. In the previous release (2.4), it was issuing a `DeprecationWarning`. The [`linenums`][linenums] keyword should be used instead, which provides more control of the output. [CodeHilite Extension]: extensions/code_hilite.html [linenums]: extensions/code_hilite.html#usage * Both `safe_mode` and the associated `html_replacement_text` keywords will be deprecated in version 2.6 and will raise a **`PendingDeprecationWarning`** in 2.5. The so-called "safe mode" was never actually "safe" which has resulted in many people having a false sense of security when using it. As an alternative, the developers of Python-Markdown recommend that any untrusted content be passed through an HTML sanitizer (like [Bleach]) after being converted to HTML by markdown. If your code previously looked like this: html = markdown.markdown(text, same_mode=True) Then it is recommended that you change your code to read something like this: import bleach html = bleach.clean(markdown.markdown(text)) If you are not interested in sanitizing untrusted text, but simply desire to escape raw HTML, then that can be accomplished through an extension which removes HTML parsing: from markdown.extensions import Extension class EscapeHtml(Extension): def extendMarkdown(self, md, md_globals): del md.preprocessors['html_block'] del md.inlinePatterns['html'] html = markdown.markdown(text, extensions=[EscapeHtml()]) As the HTML would not be parsed with the above Extension, then the searializer will escape the raw HTML, which is exactly what happens now when `safe_mode="escape"`. [Bleach]: http://bleach.readthedocs.org/ * Positional arguments on the `markdown.Markdown()` are pending deprecation as are all except the `text` argument on the `markdown.markdown()` wrapper function. Only keyword arguments should be used. For example, if your code previosuly looked like this: html = markdown.markdown(text, ['extra']) Then it is recommended that you change it to read something like this: html = markdown.markdown(text, extensions=['extra']) !!! Note This change is being made as a result of deprecating `"safe_mode"` as the `safe_mode` argumnet was one of the positional arguments. When that argument is removed, the two arguments following it will no longer be at the correct position. It is recomended that you always use keywords when they are supported for this reason. * In previous versions of Python-Markdown, the builtin extensions received special status and did not require the full path to be provided. Additionaly, third party extensions whose name started with "mdx_" received the same special treatment. This behavior will be deprecated in version 2.6 and will raise a **`PendingDeprecationWarning`** in 2.5. Ensure that you always use the full path to your extensions. For example, if you previously did the following: markdown.markdown(text, extensions=['extra']) You should change your code to the following: markdown.markdown(text, extensions=['markdown.extensions.extra']) The same applies to the command line: $ python -m markdown -x markdown.extensions.extra input.txt See the [documentation](reference.html#extensions) for a full explaination of the current behavior. * The previously documented method of appending the extension configs as a string to the extension name will be deprecated in Python-Markdown version 2.6 and will raise a **`PendingDeprecationWarning`** in 2.5. The [extension_configs](reference.html#extension_configs) keyword should be used instead. See the [documentation](reference.html#extension-configs) for a full explaination of the current behavior. What's New in Python-Markdown 2.5 --------------------------------- * The [Smarty Extension] has had a number of additional configuration settings added, which allows one to define their own subtitutions to better support languages other than English. Thanks to [Martin Altmayer] for implementing this feature. [Smarty Extension]: extensions/smarty.html [Martin Altmayer]:https://github.com/MartinAltmayer * Named Extensions (strings passed to the [`extensions`][ex] keyword of `markdown.Markdown`) can now point to any module and/or Class on your PYTHONPATH. While dot notation was previously supported, a module could not be at the root of your PYTHONPATH. The name had to contain at least one dot (requiring it to be a submodule). This restriction no longer exists. Additionaly, a Class may be specified in the name. The class must be at the end of the name (which uses dot notation from PYTHONPATH) and be seperated by a colon from the module. Therefore, if you were to import the class like this: from path.to.module import SomeExtensionClass Then the named extension would comprise this string: "path.to.module:SomeExtensionClass" This allows multiple extensions to be implemented within the same module and still accessable when the user isn't able to import the extension directly (perhaps from a template filter or the command line). This also means that extension modules are no longer required to include the `makeExtension` function which returns an instance of the extension class. However, if the user does not specify the class name (she only provides `"path.to.module"`) the extension will fail to load without the `makeExtension` function included in the module. Extension authors will want to document carfully what is required to load their extensions. [ex]: reference.html#extensions * The Extension Configuration code has been refactord to make it a little easier for extension authors to work with config settings. As a result, the [`extension_configs`][ec] keyword now accepts a dictionary rather than requiring a list of tuples. A list of tuples is still supported so no one needs to change their existing code. This should also simplify the learning curve for new users. Extension authors are encouraged to review the new methods available on the `markdown.extnesions.Extension` class for handling configs and adjust their code going forward. The included extensions provide a model for best practices. See the [API] documentation for a full explaination. [ec]: reference.html#extension_configs [API]: extensions/api.html#configsettings * The [Command Line Interface][cli] now accepts a `--extensions_config` (or `-c`) option which accepts a filename and passes the parsed content of a [YAML] or [JSON] file to the [`extension_configs`][ec] keyword of the `markdown.Markdown` class. The contents of the YAML or JSON must map to a Python Dictionary which matches the format required by the `extension_configs` kerword. Note that [PyYAML] is required to parse YAML files. [cli]: cli.html#using-extensions [YAML]: http://yaml.org/ [JSON]: http://json.org/ [PyYAML]: http://pyyaml.org/ * The [admonition extension][ae] is no longer considered "experimental." [ae]: extensions/admonition.html * There have been various refactors of the testing framework. While those changes will not directly effect end users, the code is being better tested which will benefit everyone. * Various bug fixes have been made. See the [commit log](https://github.com/waylan/Python-Markdown/commits/master) for a complete history of the changes.