+Python always has the in-development version of the current major versions
+along with the last minor release of each major version. For instance, if
+Python 2.6 was the latest release (and thus has a major version of *2* and a
+minor version of *6*), then the in-development 2.7 branch is available along
+with the maintenance branch for 2.6.
+For each branch there is read-only access for the general public and read-write
+access for those with commit privileges (called "core developers"). The
+location of these branches and the steps to check out the code are listed in
+Python has two features to aid in developing for it. First, there is a
+``Py_DEBUG`` compilation flag which turns on some features in the interpreter
+which will help with debugging. While this is not the only compilation flag
+available (see ``Misc/SpecialBuilds.txt`` in a checkout for all of them), it is
+the basic one that you should always use as it tends to catch bugs more often
+than running a build of Python without the flag.
+The other feature is support for using code directly from a checkout of Python.
+This is handy as it means you do not need to install your build of Python but
+can just use the build in-place. It also means that when you edit code in your
+checkout you get to see the results without having to install the changed files
+The steps to compile a debug version of Python are specified in the `dev FAQ`_.
+Python includes within its source tree some files to help work with various
+popular editors and tools. A list of those tools and what is available for them
+can be found in the `dev FAQ`_.
+There are several top-level directories in the Python source tree. Knowing what
+which one is meant to hold will help you find where a certain piece of
+functionality is implemented. Do realize, though, there are always exceptions to
+ The official documentation. This is what http://docs.python.org/ uses. The
+ tools for building the documentation is kept in another repository. To
+ build the docs, see ``Doc/README.txt``.
+ Contains the EBNF grammar file for Python.
+ Contains all interpreter-wide header files.
+ The part of the standard library implemented in pure Python is here.
+ Mac-specific code for things such as using IDLE as an OS X application.
+ Things that do not belong elsewhere. Typically this is varying kinds of
+ The part of the standard library (plus some other code) that is implemented
+ Code for all built-in types.
+ Windows-specific code along with build files for VC 6, 7, & 8 along with
+ Build files for VC 9 and newer.
+ Code related to the parser. The definition of the AST nodes is also kept
+ The code that makes Python run. This includes the compiler, eval loop and
+ various built-in modules.
+ Various tools that are (or have been) used to maintain Python.