def _get_int(self, variable, default=None):
    try:
      return int(self._environ[variable])
    except ValueError:
      die('Invalid value for %s, must be an integer, got %r' % (variable, self._environ[variable]))
    except __HOLE__:
      return self._defaulted(default)
dataset/ETHPy150Open pantsbuild/pex/pex/variables.py/Variables._get_int