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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_t(self, var, coords=None):
 """ Get the time coordinate of a variable This method searches for the time coordinate in the :attr:`ds`. It first checks whether there is one dimension that holds an ``'axis'`` attribute with 'T', otherwise it looks whether there is an intersection between the :attr:`t` attribute and the variables dimensions, otherwise it returns the coordinate corresponding to the first dimension of `var` Possible types var: xarray.Variable The variable to get the time coordinate for coords: dict Coordinates to use. If None, the coordinates of the dataset in the :attr:`ds` attribute are used. Returns ------- xarray.Coordinate or None The time coordinate or None if no time coordinate could be found"""

        coords = coords or self.ds.coords
        coord = self.get_variable_by_axis(var, 't', coords)
        if coord is not None:
            return coord
        dimlist = list(self.t.intersection(var.dims).intersection(coords))
        if dimlist:
            if len(dimlist) > 1:
                warn("Found multiple matches for time coordinate in the "
                     "variable: %s. I use %s" % (
                         ', '.join(dimlist), dimlist[0]),
                     PsyPlotRuntimeWarning)
            return coords[dimlist[0]]
        tname = self.get_tname(var)
        if tname is not None:
            return coords.get(tname)
        return None