Flask send_file() returning correct .xlsx data but incorrect filename
the file is being called download because that's the path you have set.
@app.route('/download', methods=['GET'])def download():If you don't have the ability to control the users' requests you should be able to define a false filename by using a redirect, otherwise just use the new route for download as defined.
Try something like this?
...from flask import redirect...@app.route('/download', methods=['GET'])def download_redirect(): redirect('/download/test.xlsx')@app.route('/download/<filename>', methods=['GET'])def download(filename): run_id = request.args.get('run_id') fp = BucketHelper().get_report_fp(run_id) send_file(fp, as_attachment=True, mimetype='application/vnd.ms-excel', attachment_filename="test.xlsx")