csv_reader.py 文件源码

def _read_data(self, stream, verbose = False):
        """Process frame data rows from the CSV stream."""

        # Note that the frame_num indices do not necessarily start from zero,
        # but the setter functions assume that the array indices do.  This
        # implementation just ignores the original frame numbers, the frames are
        # renumbered from zero.
        for row_num, row in enumerate(stream):
            frame_num = int(row[0])
            frame_t   = float(row[1])
            values    = row[2:]

            # if verbose: print "Processing row_num %d, frame_num %d, time %f." % (row_num, frame_num, frame_t)

            # add the new frame time to each object storing a trajectory
            for body in self.rigid_bodies.values():
                body._add_frame(frame_t)

            # process the columns of interest
            for mapping in self._column_map:
                # each mapping is a namedtuple with a setter method, column index, and axis name
                mapping.setter( row_num, mapping.axis, values[mapping.column] )

    # ================================================================