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# Package Layout

The Python X Library is distributed as a Python package, named `Xlib`. It contains a number of modules providing the main library interface:

`display`
  Contains the `Display` class, providing the X connection and access to all other X objects and operations.
`error`
  Contains all `Xlib` exception classes.
`threaded`
  Imported to set up the library to be thread-safe.
`rdb`
  Contains `ResourceDB`, an X resource database class, and related code.
`X`
  Contains symbolic names for all basic X protocol constants.
`Xutil`
  Contains additional constants for mainly the ICCCM standard.
`XK`
  Contains symbolic names for all X keysyms.
`Xatom`
  Contains symbolic names for all standard X atoms.
`Xcursorfont`
  Contains symbolic names for all standard X fonts.

There is also a number of subpackages, but they will mainly be of interest to developers of the Xlib itself:

`protocol`
  The low-level protocol implementation. Contains definitions of all X request, responses, events and errors, in addition to the core network code. The high-level object oriented interface provided by `Xlib.display` is merely a wrapper around this package.
`support`
  Miscellaneous supporting code for handling threads and operating system-specific features.
`xobject`
  Contains classes for all X objects, which are returned by various display operations.
`ext`
  Contains various X protocol extensions. Extensions supported by the server are loaded automatically at the display connection.

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