How modules are loaded in Python?

Python code in one module gains access to the code in another module by the process of importing it. The import statement is the most common way of invoking the import machinery, but it is not the only way. Functions such as importlib.

What is reload module in Python?

reload() reloads a previously imported module. This is useful if you have edited the module source file using an external editor and want to try out the new version without leaving the Python interpreter. The return value is the module object. Note: The argument should be a module which has been successfully imported.

What are sub modules in Python?

In my limited experience, modules with submodules are simply folders with a __init__.py file, while modules with functions/classes are actual python files.

What happens when you reload a module in Python?

reload () reloads a previously imported module. This is useful if you have edited the module source file using an external editor and want to try out the new version without leaving the Python interpreter. The return value is the module object. Note: The argument should be a module which has been successfully imported.

How to dynamically load modules or classes in Python?

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.

How often should a module be loaded in Python?

For efficiency, a module is only loaded once per interpreter session. That’s fine for function and class definitions, which typically make up the bulk of a module’s contents. But a module can contain executable statements as well, usually for initialization. Be aware that these statements will only be executed the first time a module is imported.

How to load all modules in a folder?

List all python ( .py) files in the current folder and put them as __all__ variable in __init__.py Basically so I can drop python files into a directory with no further configuration and have them be executed by a script running somewhere else. – Evan Fosmark Jun 30 ’09 at 1:29 To make it more robust, also make sure os.path.isfile (f) is True.