python - Flask_Scss not compiling scss file in simple app -

i'm trying use flask-scss compile scss file in flask app. here app:

from flask import flask, jsonify, render_template, request flask_scss import scss app = flask(__name__) app.debug = true scss(app, static_dir='static', asset_dir='assets/scss/')  @app.route('/') def index():     return render_template('index.html')  if __name__ == '__main__':     app.run(debug=true) 

this file in directory contains static directory , assets directory. furthermore, assets contains scss directory, holds file test.scss. when run app, don't see css files getting created inside of static. can please tell me i'm doing wrong?