How can I specify the function type in my type hints
3 Answers Sorted by 815 As jonrsharpe noted in a comment this can be done with typing Callable from typing import Callable def my function func Callable Note Callable on its own is equivalent to Callable Any Such a Callable takes any number and type of arguments and returns a value of any type Any
PEP 484 Type Hints peps python, For example here is a simple function whose argument and return type are declared in the annotations def greeting name str str return Hello name While these annotations are available at runtime through the usual annotations attribute no type checking happens at runtime
Type Hinting Real Python
So what is type hinting It s a formal solution to statically indicate the type of a value Type hints will help document your code And notice the idea of hints they have no runtime
Using type hints when defining a Python function The Python Coding Book, Greet person 2 4 You define the function greet person which has two parameters person number In the function definition the parameters also have type hints The type hint follows immediately after the parameter name and a colon The function s signature shows str as the data type annotation for person and int as the annotation for
PEP 483 The Theory of Type Hints peps python
PEP 483 The Theory of Type Hints peps python, Type Informational Topic Typing Created 19 Dec 2014 Post History Table of Contents Abstract This PEP lays out the theory referenced by PEP 484 Introduction This document lays out the theory of the new type hinting proposal for Python 3 5
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How to Use Type Hints for Multiple Return Types in Python
How to Use Type Hints for Multiple Return Types in Python In Python type hinting is an optional yet useful feature to make your code easier to read reason about and debug With type hints you let other developers know the expected data types for variables function arguments and return values
Make Inlay Type Hints In Python Appear Disappear Jay Miller
Using Type Hint with Function as Argument Python allows passing a function name as an argument to a function An example is an application with a user interface that uses events to communicate between software components In this case the type hint can indicate that a function type is being passed as in the following example Type Hints OWF Learn Python Open Water Foundation. Python type hints are a handy feature that allows you to annotate your function arguments and return values with the expected types This practice not only makes your code more readable but also reduces the likelihood of runtime errors Let s look at how to implement type hints in Python Annotating Function Arguments and Return Values Adding types to functions Type hints in Python also allows you to explicitly declare the type of a function s parameters and return value For example here is a simple function that takes in two arguments and returns the sum def sum a b return a b
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