base_schema.md

Code	Type	Variant
9	SkipType	None
10	NoneType	None
11	ellipsis	None
12	bool	False
13	bool	True
14	int	1
15	int	2
16	int	4
17	int	8
18	int	Ellipsis
19	bytes	None
20	str	1
21	str	0
22	str	Ellipsis
23	float	None
24	Decimal	1
25	Decimal	-1
26	datetime	ISO
27	datetime	IANA
28	tuple	None
29	list	None
30	set	None
31	dict	None