def get_var(self, name):
if name not in self._vars:<EOL><INDENT>raise VarNotDefinedError<EOL><DEDENT>return self._vars[name]<EOL>
Retrieve a variable assigned to this user
:param name: The name of the variable to retrieve
:type  name: str

:rtype: str

:raises VarNotDefinedError: The requested variable has not been defined