Is it a function?
Sometimes you want to know whether something is a function or not.
The obvious solution is to check the object class with
The class of functions is
function, but you can't access it directly.
You can instead get
type of any existing function:
FunctionType = type(lambda: None)
Now you can do checking:
def isfunction(object): return isinstance(object, FunctionType)
Luckily all above code is already written for you:
FunctionType is an existing member of
isfunction already exists in the
Note, that you usually don't care whether something is a function, but rather if it's callable or not. It can be done with
>>> callable(int) True >>> callable(42) False >>> callable(callable) True