csv file in one column
>>> pd.read_csv("wspace.csv", header=None, delim_whitespace=True)
0 1 2 3
0 NaN 9.0 3.3 4.0
1 NaN 32.3 44.3 5.1
2 NaN 7.2 1.1 0.9
>>> pd.read_csv("wspace.csv", header=None, sep=r"\s+")
0 1 2
0 9.0 3.3 4.0
1 32.3 44.3 5.1
2 7.2 1.1 0.9