Row oriented CSV and Series
Pandas does not handle Series in CSV format very well.

First problem: read_csv(squeeze=True) does not work, see:
http://stackoverflow.com/questions/15760856/how-to-read-a-pandas-series-from-a-csv-file/15767171

Secondly: both read_csv() and pandas.Series.from_csv() can't handle row-oriented CSV files. As an example, try to read the following as a Series:

import StringIO
string = "somefeature,anotherfeature,f3,f4,f5,f6,f7,lastfeature"
s = StringIO.StringIO(string)
X = pandas.Series.from_csv(s)

Result: X =
somefeature    anotherfeature
dtype: object
