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