def test_functionnotdefined(self):
try:
raise FunctionNotDefined("foo", "foo in bar")
except FunctionNotDefined as e:
assert hasattr(e, 'func_name')
assert getattr(e, 'func_name') == 'foo'
assert hasattr(e, 'expression')
assert getattr(e, 'expression') == 'foo in bar'
def _eval_call(self, node):
if isinstance(node.func, ast.Attribute):
func = self._eval(node.func)
elif isinstance(node.func, ast.Num):
func = lambda n: n * self._eval(node.func)
else:
try:
func = self.functions[node.func.id]
except KeyError:
raise FunctionNotDefined(node.func.id, self.expr)
return func(*(self._eval(a) for a in node.args),
**dict(self._eval(k) for k in node.keywords))
