def prepend(self, other, **kwargs):
for key, series in other.items():<EOL><INDENT>if key in self:<EOL><INDENT>self[key].prepend(series, **kwargs)<EOL><DEDENT>else:<EOL><INDENT>self[key] = series<EOL><DEDENT><DEDENT>return self<EOL>
Prepend the dict ``other`` to this one

        Parameters
        ----------
        other : `dict` of `TimeSeries`
            the container to prepend to this one

        copy : `bool`, optional
            if `True` copy data from ``other`` before storing, only
            affects those keys in ``other`` that aren't in ``self``

        **kwargs
            other keyword arguments to send to `TimeSeries.prepend`

        See Also
        --------
        TimeSeries.prepend
            for details of the underlying series prepend operation