read_csv: chunksize clashes with nrows (original) (raw)

If nrows are determined, the use of chunksize option does not create a TextFileReader object.

reader = pd.read_table(fname, sep=',',chunksize=4, na_values=['null'], nrows=20) type(reader)

pandas.core.frame.DataFrame

My suggestion:

• Either put into docs that they are not to be used concurrently
• or it's a feature request that they can.

I would find it useful to get chunks of x size, but only for the first n row of a huge file.