troubleshooting Question

save dataframe to a csv file in python

Avatar of ocean O
ocean O asked on
7 Comments1 Solution32 ViewsLast Modified:
Hi, I have a question for python.  I had use cursor.fetchmany() to fetch the data. It will fetch multiple times depends on the data number. I want to generate one csv file after all the fetching. How can I do it? Code is below. Thanks

 datafile = pd.DataFrame([])
            while True:

                results = cursor.fetchmany(7000)

                if not results:

                col_Names = ['market', 'site_id', 'latitude', 'longitude', 'state', 'zip', 'structure_type']
                data = pd.DataFrame(results)
                data.to_csv(filename, index=False, header=col_Names) //This is the first time fetching
          //how can I append the next fetching data to the csv file?

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