Using python inside of a RhinoCommon command

gistfile1.cs

...
Rhino.Runtime.PythonScript m_py_script;
Rhino.Runtime.PythonCompiledCode m_compiled_script;

protected override Rhino.Commands.Result RunCommand(RhinoDoc doc, Rhino.Commands.RunMode mode)
{
  // create an instance of a python script processor
  if (m_py_script == null)
    m_py_script = Rhino.Runtime.PythonScript.Create();
  if (m_py_script == null)
  {
    Rhino.RhinoApp.WriteLine("Error: could not load python scripting engine");
    return Rhino.Commands.Result.Failure;
  }

  // Always set the doc for the script so it knows what it is working with
  // when it is executed
  m_py_script.ScriptContextDoc = doc;

  // you can either directly execute the script with a string (or filename)
  m_py_script.ExecuteScript(@"
import rhinoscriptsyntax as rs
for i in range(10):
    rs.AddLine([0,0,0],[i+10,i*2,i*i])
  ");

  // or...
  // if the script isn't changing and we want to reuse it over and over
  // we can eliminate the parsing stage and use a "compiled" script object
  // This is what we use in ghPython and only recreate the compiled script
  // when the text actually changes.
  // I would assume the script would be much larger than this example
  if( m_compiled_script==null )
    m_compiled_script = m_py_script.Compile("print 'hi'");
  m_compiled_script.Execute(m_py_script);

  return Rhino.Commands.Result.Success;
}