check-for-init-py-files

#!/bin/bash
#
# Test if __init__.py file exists in directory containing .py files.

# Exit on first failure.
set -e
# Exit on unset variable.
set -u

success=0

while read -r directory; do
  if [[ ! -f "${directory}/__init__.py" ]]; then
    printf "Directory missing __init__.py file: %s\n" "${directory}" >&2
    success=255
  fi
done < <(
  find . \
    -type f \
    -name '*.py' \
    -not -path "./venv/*" \
    -not -path "./.git/*" \
    -exec dirname {} \; \
    | sort --unique
)

exit "${success}"