Python
fromPycoders
1 week agoPyCoder's Weekly | Issue #696
Namespace packages, context managers, functools.Placeholder, PEP updates, and testing/scientific-Python resources offer practical tools and guidance for modern Python development.
The new Placeholder, added in Python 3.14, only makes sense in the context of functools.partial, so in order to understand Placeholder you will need to understand how functools.partial works and how to use it. In a nutshell, partial allows you to perform partial function application, by "freezing" arguments to functions. How to pass arguments to functools.partial Up until Python 3.13, you could use partial to freeze arguments in two types of ways: you could pass positional arguments to partial, which would be passed in the same order to the function being used with partial; or you could pass keyword arguments to partial, which would be passed with the same name to the function being used with partial.