def load_list(filename):
        """Loads a list of trajectories from a data text file.

        Parameters
        ----------

        filename : str
          Path of the text file that stores the data of a set of trajectories.


        Returns
        -------

        list : List of trajectories loaded from the file.
        """
        arr = np.loadtxt(filename, delimiter="\t").T
        Nlines = arr.shape[0]
        return [
            Trajectory(tt=1.0 * a[0] / 1000, xx=a[1], yy=a[2])
            for a in np.split(arr, Nlines / 3)
        ]
Loads a list of trajectories from a data text file.

        Parameters
        ----------

        filename : str
          Path of the text file that stores the data of a set of trajectories.


        Returns
        -------

        list : List of trajectories loaded from the file.
        
moviepy/video/tools/interpolators.py