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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 standardize_dims(self, var, dims={}):
 """Replace the coordinate names through x, y, z and t Parameters var: xarray.Variable The variable to use the dimensions of dims: dict The dictionary to use for replacing the original dimensions Returns ------- dict The dictionary with replaced dimensions"""

        dims = dict(dims)
        name_map = {self.get_xname(var, self.ds.coords): 'x',
                    self.get_yname(var, self.ds.coords): 'y',
                    self.get_zname(var, self.ds.coords): 'z',
                    self.get_tname(var, self.ds.coords): 't'}
        dims = dict(dims)
        for dim in set(dims).intersection(name_map):
            dims[name_map[dim]] = dims.pop(dim)
        return dims