How to update static/clear cache in browser with python-flask?

Question

Python

In general, I changed the pictures from my statics, and the browser shows the old ones.
A little earlier, I had another problem that the styles were not updated and I was offered to add the following code to the Flask file:

#   SNIPPET FOR CAESH   #
@app.context_processor
def override_url_for():
    return dict(url_for=dated_url_for)

def dated_url_for(endpoint, **values):
    if endpoint == 'static':
        filename = values.get('filename', None)
        if filename:
            file_path = os.path.join(app.root_path,
                                     endpoint, filename)
            values['q'] = int(os.stat(file_path).st_mtime)
    return url_for(endpoint, **values)
#   SNIPPET FOR CAESH   #

I have two questions:

• How in this case to force the browser to update images?
  
• How to clear the browser cache in Python?
  

Thank you in advance!

Answer 1

@app.after_request
def add_header(response):
    response.headers['X-UA-Compatible'] = 'IE=Edge,chrome=1'
    response.headers['Cache-Control'] = 'public, max-age=0'
    return response

You can disable browser caching.

Answer 2

Search is your friend. You can force pages to become outdated like this. Hint for puff, but adaptable at times.

Answer 3

You can try to cache the view. For example like this

@app.route("/")
@cache.cached(timeout=50)
def index():
    return render_template('index.html')

I really don't know how it will affect the statics)