code: def get_dataframe(self, sort_key="wall_time", **kwargs):
          import pandas as pd
          frame = pd.DataFrame(columns=AbinitTimerSection.FIELDS)
          for osect in self.order_sections(sort_key):
              frame = frame.append(osect.to_dict(), ignore_index=True)
          frame.info =  self.info
          frame.cpu_time =  self.cpu_time
          frame.wall_time =  self.wall_time
          frame.mpi_nprocs =  self.mpi_nprocs
          frame.omp_nthreads =  self.omp_nthreads
          frame.mpi_rank =  self.mpi_rank
          frame.fname =  self.fname
          return frame