Fix gh-850

Added Python connectors and formated official python-connector mentioning in line with other connectors.

Author: Vladimir I

doc/1.10/book/connectors/__python.rst

@@ -2,6 +2,10 @@
                             Python
 =====================================================================
 
+`tarantool-python <http://github.com/tarantool/tarantool-python>`_
+is the official Python connector for Tarantool. It is not supplied as part
+of the Tarantool repository and must be installed separately (see below for details).
+
 Here is a complete Python program that inserts ``[99999,'Value','Value']`` into
 space ``examples`` via the high-level Python API.
 
@@ -18,7 +22,9 @@ To prepare, paste the code into a file named :file:`example.py` and install
 the ``tarantool-python`` connector with either :samp:`pip install tarantool\>0.4`
 to install in :file:`/usr` (requires **root** privilege) or
 :samp:`pip install tarantool\>0.4 --user` to install in :file:`~` i.e. user's
-default directory. Before trying to run, check that the server instance is :ref:`listening <cfg_basic-listen>` at
+default directory.
+
+Before trying to run, check that the server instance is :ref:`listening <cfg_basic-listen>` at
 ``localhost:3301`` and that the space ``examples`` exists, as
 :ref:`described earlier <index-connector_setting>`.
 To run the program, say :samp:`python example.py`. The program will connect
@@ -32,3 +38,7 @@ necessary for good practice. For that, please see
 For an example of using Python API with
 `queue managers for Tarantool <https://github.com/tarantool/queue>`_, see
 `queue-python <https://github.com/tarantool/queue-python>`_ project at GitHub.
+Also there are several community driven Python connectors:
+  * `asynctnt <https://github.com/igorcoding/asynctnt>`_ with asyncio support
+  * `aiotarantool <https://github.com/shveenkov/aiotarantool>`_ also with asyncio support
+  * `gtarantool <https://github.com/shveenkov/gtarantool>`_ with gevent support