docs: def evaluate(self, data):
          """Evaluate the code needed to compute a given Data object."""
          return 'PYTHONPATH="{runtime}" python3 -u -m resolwe.process {program} --slug {slug} --inputs {inputs}'.format(
              runtime=PYTHON_RUNTIME_VOLUME,
              program=PYTHON_PROGRAM_VOLUME,
              slug=shlex.quote(data.process.slug),
              inputs=PYTHON_INPUTS_VOLUME,
          )