The delim_whitespace options no longer works when specifying a skip_footer other then zero. I can replicate the behavior in 0.12 with the following example:

import pandas as pd from StringIO import StringIO indata = StringIO("""1.2 5.6 8.5 4.5 6.7 6.4 """) indata.seek(0) df = pd.read_csv(indata, delim_whitespace=True, header=None, skip_footer=2) 

Which returns:

 0 0 1.2 5.6 8.5 1 4.5 6.7 6.4 

Note how its only one column, instead of three. Changing the skip_footer to 0 makes it work as expected.

indata.seek(0) df = pd.read_csv(indata, delim_whitespace=True, header=None, skip_footer=0) 

Returns:

 0 1 2 0 1.2 5.6 8.5 1 4.5 6.7 6.4 2 NaN NaN NaN 3 NaN NaN NaN 

If the above example is used with something like names=['a','b','c'] an (obvious) 'ValueError' exception occurs: Expected 3 fields in line 1, saw 1.