Splitting a Dataframe into Multiple Dataframes

import re
for ([brand, partner, pos, device], frame) in groups:
    device2 = device.replace("-", "").replace(" ", "")
    fn = '_'.join([brand, pos, partner, device2])
    if frame.shape[0] > 20000:
        #frame.to_csv(data2_path+("/%s.csv" % fn), index=0)
        print(fn, frame.shape)