Types/set types

set : allows list, tuple, set, frozenset, deque, or generators and casts to a set; when a generic parameter is provided, the appropriate validation is applied to all items of the set

typing.Set : handled the same as set above

frozenset : allows list, tuple, set, frozenset, deque, or generators and casts to a frozen set; when a generic parameter is provided, the appropriate validation is applied to all items of the set

typing.FrozenSet : handled the same as frozenset above

from typing import FrozenSet, Optional, Set

from pydantic import BaseModel


class Model(BaseModel):
    simple_set: Optional[set] = None
    set_of_ints: Optional[Set[int]] = None

    simple_frozenset: Optional[frozenset] = None
    frozenset_of_ints: Optional[FrozenSet[int]] = None


print(Model(simple_set={'1', '2', '3'}).simple_set)
#> {'1', '2', '3'}
print(Model(simple_set=['1', '2', '3']).simple_set)
#> {'1', '2', '3'}
print(Model(set_of_ints=['1', '2', '3']).set_of_ints)
#> {1, 2, 3}

m1 = Model(simple_frozenset=['1', '2', '3'])
print(type(m1.simple_frozenset))
#> <class 'frozenset'>
print(sorted(m1.simple_frozenset))
#> ['1', '2', '3']

m2 = Model(frozenset_of_ints=['1', '2', '3'])
print(type(m2.frozenset_of_ints))
#> <class 'frozenset'>
print(sorted(m2.frozenset_of_ints))
#> [1, 2, 3]