code: def read_channels(self, fid):
          
          bones = [[] for i in self.vertices]
          num_channels = 0
          for vertex in self.vertices:
              num_channels = num_channels + len(vertex.meta['channels'])
  
          lin = self.read_line(fid)
          while lin != ':DEGREES':
              lin = self.read_line(fid)
              if lin == '':
                  raise ValueError('Could not find :DEGREES in ' + fid.name)
  
          counter = 0
          lin = self.read_line(fid)
          while lin:
              parts = lin.split()
              if len(parts)==1:
                  frame_no = int(parts[0])
                  if frame_no:
                      counter += 1
                      if counter != frame_no:
                          raise ValueError('Unexpected frame number.')
                  else:
                      raise ValueError('Single bone name  ...')
              else:
                  ind = self.get_index_by_name(parts[0])
                  bones[ind].append(np.array([float(channel) for channel in parts[1:]]))
              lin = self.read_line(fid)
  
          num_frames = counter
  
          channels = np.zeros((num_frames, num_channels))
  
          end_val = 0
          for i in range(len(self.vertices)):
              vertex = self.vertices[i]
              if len(vertex.meta['channels'])>0:                
                  start_val = end_val
                  end_val = end_val + len(vertex.meta['channels'])
                  for j in range(num_frames):
                      channels[j, start_val:end_val] = bones[i][j]
              self.resolve_indices(i, start_val)
  
          self.smooth_angle_channels(channels)
          return channels
docs: Read channels from an acclaim file.