run a flake8 lint test + command every time a .py file is written: the world's smallest/laziest py test

crapplepy

#!/bin/sh

if [ -z "${PYCMD}" ]; then
  echo "# You can set the command to run like so:"
  echo "#     export PYCMD=\"python36 example.py\""
  echo
fi

#  where to set up the file event watch, default: present dir and 
#  recursive
WORKPATH="-r -m ."
#  where to set py include/class scan path, default: present dir
export PYTHONPATH="$(pwd)"

echo "# Watching: ${WORKPATH}"
echo "# Include base: ${PYTHONPATH}"
echo "# Run command (PYCMD): ${PYCMD}"
echo 

inotifywait -e close_write,moved_to,create ${WORKPATH} | while read -r directory events filename; do
  if [[ "${filename}" == *".py" ]] && [[ "${events}" == *"CLOSE_WRITE"* ]]; then
    echo
    echo "### event: ${events}, for ${directory}${filename}"
    flake8 ${directory}${filename} 
    if [ $? -ne 0 ]; then
      echo "# Terrible. Go fix it."
    else
      if [ ! -z "${PYCMD}" ]; then
        ${PYCMD}
        if [ $? -ne 0 ]; then
          echo "# You have failed."
        fi
      fi
    fi
  fi
done