code: def get_stdlib_modules():
      
      modules = list(sys.builtin_module_names)
      for path in sys.path[1:]:
          if 'site-packages' not in path:
              modules += module_list(path)
      
      modules = set(modules)
      if '__init__' in modules:
          modules.remove('__init__')
      modules = list(modules)
      return modules
docs: Returns a list containing the names of all the modules available in the
      standard library.
      
      Based on the function get_root_modules from the IPython project.
      Present in IPython.core.completerlib in v0.13.1
      
      Copyright (C) 2010-2011 The IPython Development Team.
      Distributed under the terms of the BSD License.