Use Flask to convert a Pandas dataframe to CSV and serve a download
set the content-disposition and use stringIO to convert dataframe to stream, below is the code to achieve,
execel_file = StringIO.StringIO()filename = "%s.csv" % ('output file')df.to_csv(execel_file, encoding='utf-8')csv_output = execel_file.getvalue()execel_file.close()resp = make_response(csv_output)resp.headers["Content-Disposition"] = ("attachment; filename=%s" % filename)resp.headers["Content-Type"] = "text/csv"return resp