code: def test_iter_keys_list(self):
      i = list(self.c.keys())[0]
      assert i == 0
  
imports: import pytest
  import fiona
  from fiona.model import Geometry
label_desc: Use image node_id 34 for calling the TestReading obj's underlying member method code with example usage: obj.test_iter_keys_list() without return types