def growth_volatility(eqdata, **kwargs):
_window = kwargs.get('<STR_LIT>', <NUM_LIT:20>)<EOL>_selection = kwargs.get('<STR_LIT>', '<STR_LIT>')<EOL>_outputcol = kwargs.get('<STR_LIT>', '<STR_LIT>')<EOL>_growthdata = simple.growth(eqdata, selection=_selection)<EOL>return volatility(_growthdata, outputcol=_outputcol, window=_window)<EOL>
Return the volatility of growth.

Note that, like :func:`pynance.tech.simple.growth` but in contrast to 
:func:`volatility`, :func:`growth_volatility`
applies directly to a dataframe like that returned by 
:func:`pynance.data.retrieve.get`, not necessarily to a single-column dataframe.

Parameters
----------
eqdata : DataFrame
    Data from which to extract growth volatility. An exception
    will be raised if `eqdata` does not contain a column 'Adj Close'
    or an optional name specified by the `selection` parameter.
window : int, optional
    Window on which to calculate volatility. Defaults to 20.
selection : str, optional
    Column of eqdata on which to calculate volatility of growth. Defaults
    to 'Adj Close'
outputcol : str, optional
    Column to use for output. Defaults to 'Growth Risk'.

Returns
---------
out : DataFrame
    Dataframe showing the volatility of growth over the specified `window`.