¿Es posible llamar dinámicamente a una función en Python?

Is it possible to dynamically call a function in Python?

One of them is dynamic class inclusion, and the other is the ability to dynamically call a function. Python on the other hand does not make either of these easy. There is good reason. Both autoloading classes and dynamically executing functions lean toward the magical side of programming.

The alternative is to go through the window object. In JavaScript everything that is defined in the global scope is defined as a property of the global window object. So the func_abc function defined about is defined as window.func_abc.

Two of the common uses for dynamic function execution in PHP are callbacks and hooks. However, in Python neither of these are very common. I think Python’s focus on being explicit keeps developers from moving toward meta and magical programming. Python also provides decorators that can be used to explicitly hook or wrap a function.

So you cannot directly call the function in you code but need to some get a function in a variable and be able to use it to call the appropriate function. Of course a simple solution is to use a if-then-else (or a switch) e.g.:

Python lets you define classes dynamically, and instantiate objects with them as required. Why might you want to do this? The short answer is yet more abstraction. Admittedly, needing to write code at this level of abstraction is generally a rare occurrence. As always when programming, you should consider if there is an easier solution.

By using __import__ () method: __import__ () is a dunder method (methods of class starting and ending with double underscore also called magic method) and all classes own it. It is used to import a module or a class within the instance of a class.

But, In this approach, the config file does not have to located on import-able path and can even be located on other repository. The principle is so simple. Just registers and loads the path of configuration .py file dynamically. That is, see following. if dbname != config. DATABASE_CONFIG [ ‘dbname’ ]: conn = pymysql. connect ( host=config.