Python Flask Not Updating Images [duplicate]

This seemed to work

Using Flask, how do I modify the Cache-Control header for ALL output?

Did it by adding:

app = Flask(__name__)app.config['SEND_FILE_MAX_AGE_DEFAULT'] = 0

To the top (included the app = Flask part to help other newbs) and this at the end:

# No caching at all for API endpoints.@app.after_requestdef add_header(response):    # response.cache_control.no_store = True    response.headers['Cache-Control'] = 'no-store, no-cache, must-    revalidate, post-check=0, pre-check=0, max-age=0'    response.headers['Pragma'] = 'no-cache'    response.headers['Expires'] = '-1'    return response

This works, but the log in my command prompt window is constantly sending information.

try to change the image name so it seems it pretends to be a new image every time you regenerate it. You can use some time-based suffix of the file name. Or you can just change the url of the image adding some fake get parameters to it.

Reference:flask cache busting

flask cache busting library

Had the same problem and using local hour as name extension worked just fine for me. Some thing to note here are:

1. The ":" character in the timestamp needs to be replaced since it is not accepted in naming conventions.
2. You will have to return a list of all the files in the static folder when rendering the template in flask.
3. You will have to iterate through that list in html with jinja code to find the naming patterns you inserted in the picture names.