"pytags_index_on_load": true,
"pytags_index_on_save": true,
"pytags_databases":
    [
        {
            "include_project_folders": true,
            "path": "$HOME/.pytags.db"
        }
    ]

works. I tested it with Python 2.7, but I expect it to work with Python >= 2.6,
3.x included.

Command Palette
---------------

 - **Update Index** - Indexes files that have changed since last scan.
 - **Rebuild Index** - Indexes all files.
 - **Find Definition** - Skips to specified symbol definition.

Key Bindings
-------------
Ctrl+T, Ctrl+R updates the index. Ctrl+T, Ctrl+T skips to definition of symbol
under cursor.

Settings
--------

 - **pytags\_index\_on\_save** - Whether to index saved files.
 - **pytags\_index\_on\_load** - Whether to index opened files.
 - **pytags\_complete\_imports** - Whether to enable import completions.
 - **pytags\_exclusive\_completions** - Whether regular completions should be
                                        hidden when import completions are
                                        available.
 - **pytags\_databases** - List of databases to search/update, see next section.

Database Definitions
--------------------
You can use multiple databases at a time. This allows indexing of project
related stuff in one place and site packages in another, sharing some databases
among different projects. Each database definition requires "path" field (path
to the SQLite database file), and may include any of the following fields:

 - **include\_project\_folders** - Whether this database should index files
                                   found in project folders.
 - **roots** - List of directories containing files that should be indexed.
 - **pattern** - Regular expression that each indexed file should match.

All file paths can contain environment variables expandable with Python's
_os.path.expandvars_.


Import Completions
------------------
With import completions on, typing **from** _\<ctrl+space\>_ will pop up a list
of indexed modules, and typing **from foo.bar import** _\<ctrl+space\>_ will
bring up a list of indexed _foo.bar_'s members.


Compatibility Issues
--------------------
For completions to work, a little extended "Python (PyTags)" syntax is required.
If you enable import completions, it will be automatically used instead of
default Python syntax. "Python (PyTags)" top-level scope is
_source.python.pytags_. Plugins that incorrectly check scopes, like
```python
"some_string" in scope.split()