Group your Python imports
An often ignored but important part of the “Style Guide for Python Code” (PEP-8) is the Imports section.
This part on grouping imports is particularly important:
Imports should be grouped in the following order:
- Standard library imports.
- Related third party imports.
- Local application/library specific imports.
You should put a blank line between each group of imports.
The first group: “Standard library imports”
These are from the Python’s built-in standard library.
from typing import Any import os
The second group: “Related third party imports”
These are imports from installed packages. The PEP says “third party” which confuses a lot of people. To me it could be a library maintained by yourself or the same organisation, but is kept in a separate repository and installed as a separate package.
from airflow.utils.decorators import apply_defaults from cx_Oracle import NUMBER
The third group: “Local application/library specific imports”
I take this to mean “imports from the same repository”.
from .stored_procedure_operator import StoredProcedureOperator
Putting it together
Separate each group by a blank line.
from typing import Any import os from airflow.utils.decorators import apply_defaults from cx_Oracle import NUMBER from .stored_procedure_operator import StoredProcedureOperator
Within each group, sort the lines alphabetically (this is just my preference, not part of the style guide).