Raises TypeError if code is not an instance of basestring (str in python 3) or scope is not None or an instance of dict.
Scope variables can be set by passing a dictionary as the scope argument or by using keyword arguments. If a variable is set as a keyword argument it will override any setting for that variable in the scope dictionary.
New in version 1.9: Ability to pass scope values using keyword arguments.
Scope dictionary for this instance.