code: def test_about():
      """
      about: Tests if the about string prints correct.
      """
      f = io.StringIO()
      with contextlib.redirect_stdout(f):
          qml.about()
      out = f.getvalue().strip()
  
      assert "Version:" in out
      pl_version_match = re.search(r"Version:\s+([\S]+)\n", out).group(
          1
      )
      assert qml.version().replace("-", ".") in pl_version_match
      assert "Numpy version" in out
      assert "Scipy version" in out
      assert "default.qubit" in out
      assert "default.gaussian" in out
  
imports: import contextlib
  import io
  import re
  import pytest
  import pennylane
label_desc: Use image node_id 1 for calling a global function with example usage: test_about() without return types