Feb 9, 2010 · Beware that in python 3.x and in New-Style classes (aviable optionally from Python 2.6) class and type have been merged and this can sometime lead to unexpected results. …

Dec 31, 2008 · If you are trying to query the type of a native Python object, @atzz's answer will steer you in the right direction. However, if you are trying to generate Python objects that have …

Type hints in Python allow types to be checked but in a very different way from statically typed languages. Type hints in Python associate the expected types of arguments with functions as …

Jul 3, 2024 · Python 3.10 or newer: Use |. Example for a function which takes a single argument that is either an int or str and returns either an int or str: def func(arg: int | str) -> int | str: # …

Instance check on abstract type. Python has a concept of abstract base classes. Loosely speaking, these express the meaning of types, not their hierarchy: if isinstance(x, …

Oct 2, 2016 · As a way of giving a type to an expression that is difficult to type. For example, Python's type annotations currently do not support recursive types, which makes typing things …

type(obj) == str # this works because str is already a type Alternatively: type(obj) == type('') Note, in Python 2, if obj is a unicode type, then neither of the above will work. Nor will isinstance(). …

Python 3.10 introduces the | union operator into type hinting, see PEP 604. Instead of Union[str, int] you can write str | int. In line with other type-hinted languages, the preferred (and more …

For older versions of Python (currently 3.7 and later), use the typing-extensions package. One of its purposes is to. Enable use of new type system features on older Python versions. For …

Mar 12, 2016 · The python hierarchy is Type (Metaclass) -> Class -> Instance. Think of the function type() as going one level up. If you use the function type() on an instance of an int …