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Should I import in __ init __ py?
So this would suggest that it is ok to put imports in the __init__ module, if __init__ is being used to expose functions from submodules. Here is a short blog post I found with a couple examples of Pythonic uses of __init__ , using imports to make subpackages available at package level.
What should be put in __ init __ py?
The __init__.py file makes Python treat directories containing it as modules. Furthermore, this is the first file to be loaded in a module, so you can use it to execute code that you want to run each time a module is loaded, or specify the submodules to be exported.
How is __ init __ py used?
The __init__.py file lets the Python interpreter know that a directory contains code for a Python module. The file essentially the constructor of your package or directory without it being called such. It sets up how packages or functions will be imported into your other files.
What is the use of __ name __ in Python?
__name__ is a built-in variable which evaluates to the name of the current module. Thus it can be used to check whether the current script is being run on its own or being imported somewhere else by combining it with if statement, as shown below. Consider two separate files File1 and File2.
How do you use the main function in Python 3?
Defining Main Functions in Python
- Put Most Code Into a Function or Class.
- Use if __name__ == “__main__” to Control the Execution of Your Code.
- Create a Function Called main() to Contain the Code You Want to Run.
- Call Other Functions From main()
- Summary of Python Main Function Best Practices.
What is __ future __ in Python?
__future__ is a real module, and serves three purposes: To avoid confusing existing tools that analyze import statements and expect to find the modules they’re importing.
How to import subpackage from submodule in Python?
However, if you want to load do_something () on the import of subpackage, put from submodule.hello_word import do_something in subpackage/__init__.py, and then, in you test.py, do a import subpackage. It’s an absolute hard-and-fast rule in Python that a name must always be defined or imported within the module where you’re using it.
What does empty _ _ init _ _.Py mean?
An empty __init__.py will mean that the top-level package namespace will contain only the names of any subpackages the program imports, which allows you to import only the subpackages you require. This file determines the namespace of the top-level package.
Do you have to import something into test.py?
It’s an absolute hard-and-fast rule in Python that a name must always be defined or imported within the module where you’re using it. Here you never import anything inside test.py – so as the error says, do_something is not defined.
How to remove subpackage from test.py file?
So to answer your problem we can strip your filestore down by omitting the top-level package, which will never be considered by the interpreter when test.py is run as a program. It would then look like this: Now, subpackage is no longer a sub-package, as we have removed the containing package as irrelevant.