code: def test_iter_keys_list(self):
      i = list(self.c.keys())[0]
      assert i == 0
  
imports: import unittest
  import re
  import pytest
  import fiona
  from .conftest import WGS84PATTERN
label_desc: Use image node_id 35 for calling the ReadingTest obj's underlying member method code with example usage: obj.test_iter_keys_list() without return types