docstr: read the entire tractography
          
docstr_tok: ["read","the","entire","tractography"]
code: def read_tracks(self):
      """read the entire tractography"""
      I = self.offsets[:]
      TR = self.tracks[:]
      tracks = Streamlines()
      for i in range(len(I) - 1):
          off0, off1 = I[i : i + 2]
          tracks.append(TR[off0:off1])
      return tracks
  
file_path: dipy/dipy/io/dpy.py
imports: import numpy
  import h5py
  from nibabel.streamlines import ArraySequence
label_desc: Use image node_id 7 for calling the Dpy obj's underlying member method code with example usage: obj.read_tracks() and returns: tracks