def ema_growth(eqdata, **kwargs):
_growth_outputcol = kwargs.get('<STR_LIT>', '<STR_LIT>')<EOL>_ema_outputcol = '<STR_LIT>'<EOL>kwargs['<STR_LIT>'] = _ema_outputcol<EOL>_emadf = ema(eqdata, **kwargs)<EOL>return simple.growth(_emadf, selection=_ema_outputcol, outputcol=_growth_outputcol)<EOL>
Growth of exponential moving average.

Parameters
----------
eqdata : DataFrame
span : int, optional
    Span for exponential moving average. Defaults to 20.
outputcol : str, optional.
    Column to use for output. Defaults to 'EMA Growth'.
selection : str, optional
    Column of eqdata on which to calculate ema growth. If
    `eqdata` has only 1 column, `selection` is ignored,
    and ema growth is calculated on that column. Defaults
    to 'Adj Close'.

Returns
---------
out : DataFrame
    Growth of exponential moving average from one day to next