text: def run(verbosity=1, doctest=False):
      """Run NetworkX tests.
  
      Parameters
      ----------
      verbosity: integer, optional
        Level of detail in test reports.  Higher numbers provide more detail.
  
      doctest: bool, optional
        True to run doctests in code modules
      """
  
      import pytest
  
      pytest_args = ["-l"]
  
      if verbosity and int(verbosity) > 1:
          pytest_args += ["-" + "v" * (int(verbosity) - 1)]
  
      if doctest:
          pytest_args += ["--doctest-modules"]
  
      pytest_args += ["--pyargs", "networkx"]
  
      try:
          code = pytest.main(pytest_args)
      except SystemExit as exc:
          code = exc.code
  
      return code == 0
  
  
  if __name__ == "__main__":
      run()
  