##
2.3.1 Keywords

The following identifiers are used as reserved words, or keywords of the language, and cannot be used as ordinary identifiers. They must be spelled exactly as written here:

      and       del       for       is        raise
      assert    elif      from      lambda    return
      break     else      global    not       try
      class     except    if        or        while
      continue  exec      import    pass      yield
      def       finally   in        print

Note that although the identifier `as` can be used as part of the syntax of `import` statements, it is not currently a reserved word.

In some future version of Python, the identifiers `as` and `None` will both become keywords.