Helper to recursively import all .py files on disk. This ensures that all side effects from importing a module "trigger". (For example, registering a model with the ORM, or adding routes.) Call it with the name of a top-level module within the directory.

import_all.py

import re
import importlib
from pathlib import Path


def import_all(module_name: str, ignore: str = None) -> None:
  """
  Helper to recursively import all .py files on disk.
  This ensures that all side effects from importing a module "trigger".
  (For example, registering a model with the ORM, or adding routes.)
  Call it with the name of a top-level module within the directory.
  """
  module = importlib.import_module(module_name)
  module_dir = Path(module.__file__).parent
  package = module.__package__

  ignore_pattern = re.compile(ignore) if ignore else None

  def import_recursively(path, parent_package):
    for file in path.iterdir():
      if file.is_dir() and (file / '__init__.py').is_file():
        import_recursively(file, f"{parent_package}.{file.name}")
      elif file.suffix == '.py':
        if file.stem == '__init__':
          continue

        module_name = f"{parent_package}.{file.stem}"
        if ignore_pattern and ignore_pattern.match(module_name):
          continue

        importlib.import_module(module_name)

  import_recursively(module_dir, package)