What is the python way to define a (non-class) type like:
typedef Dict[Union[int, str], Set[str]] RecordType
This would simply do it?
from typing import Dict, Union, Set
RecordType = Dict[Union[int, str], Set[str]]
def my_func(rec: RecordType):
pass
my_func({1: {'2'}})
my_func({1: {2}})
This code will generate a warning from your IDE on the second call to my_func, but not on the first. As @sahasrara62 indicated, more here https://docs.python.org/3/library/stdtypes.html#types-genericalias
Since Python 3.9, the preferred syntax would be:
from typing import Union
RecordType = dict[Union[int, str], set[str]]
The built-in types can be used directly for type hints and the added imports are no longer required.
Since Python 3.10, the preferred syntax is
RecordType = dict[int | str, set[str]]
The | operator is a simpler way to create a union of types, and the import of Union is no longer required.
Since Python 3.12, the preferred syntax is
type RecordType = dict[int | str, set[str]]
The type keyword explicitly indicates that this is a type alias.