How to compare two rows in a csv file?

I’ve a data.csv file which looks as follows.

-1.95e+01   -2.30e-01   -2.56e-01   4.44e+01 -1.95e+01   -2.30e-01   -7.68e-01   4.48e+01 -2.00e+01   -2.30e-01   -2.56e-01   3.41e+01 -2.00e+01   -2.30e-01   -7.69e-01   3.46e+01 -2.10e+01   -9.92e+00   1.00e+01    9.66e+01 -2.10e+01   -9.92e+00   2.30e+00    4.29e+01 

I’d like to have a result.csv file such that if the value in the first column is the same, grab all the data in the first four columns (there are 4 columns) and save it in result.csv file. Then the next equal values and save it in the next four columns. For example my result.csv should look like

-1.95e+01 -2.30e-01 -2.56e-01 4.44e+01  -2.00e+01 -2.30e-01 -2.56e01 3.41e+01 -2.10e+01 -9.92e+00 1.00e+01 9.66e+01 -1.95e+01 -2.30e-01 -7.68e-01 4.48e+01  -2.00e+01 -2.30e-01 -7.69e-01 3.46e+01 -2.10e+01 -9.92e+00 2.30e+00 4.29e+01 

My very basic attempt is as follows:

with open('data.csv', 'r') as f:     csv_reader = csv.reader(f, delimiter='\t')     for col in csv_reader:               i = 0         if col[0] == "Next value of the same column": 'don't know how to fix             #Grab all the values which have same value in the first column         else:             #Grab next values which have same value in the first column         i += 1