code: def test_readme():
      """test_readme"""
      # Note: From README.md
      filename = os.path.join(
          os.path.dirname(os.path.abspath(__file__)), "..", "README.md"
      )
      source = extract_block(filename, "python")
      exec(source, globals())
  
imports: import os
  import sys
  import pytest
label_desc: Use image node_id 2 for calling a global function with example usage: test_readme() without return types