(For guys who got here by googling or else..)

Just use Pydantic or such tools.. & take a look to singledispatch for some cases:

from functools import singledispatch

@singledispatch
def process(value):
    raise NotImplementedError(f"Unsupported type: {type(value)}")

@process.register
def _(value: int):
    return f"Processing integer: {value}"

@process.register
def _(value: float):
    return f"Processing float: {value}"

@process.register
def _(value: str):
    return f"Processing string: {value}"

if __name__ == `__main__`:
    print(process(10))        # out: Processing integer: 10
    print(process(10.5))      # out: Processing float: 10.5
    print(process("Hello"))   # out: Processing string: Hello

Just use Pydantic or such tools & take a look to singledispatch for some cases:

from functools import singledispatch

@singledispatch
def process(value):
    raise NotImplementedError(f"Unsupported type: {type(value)}")

@process.register
def _(value: int):
    return f"Processing integer: {value}"

@process.register
def _(value: float):
    return f"Processing float: {value}"

@process.register
def _(value: str):
    return f"Processing string: {value}"

if __name__ == "__main__":
    print(process(10))        # out: Processing integer: 10
    print(process(10.5))      # out: Processing float: 10.5
    print(process("Hello"))   # out: Processing string: Hello