family1 1 0 0 2 0 2 2 0 0 0 1 0 1 1 0 0 0 0 1 NA NA 4
family1 2 0 0 2 2 1 4 0 0 0 0 0 0 0 0 0 0 0 0 NA NA 4
family1 3 0 0 2 5 1 2 0 0 0 1 1 0 1 1 1 0 0 0 NA NA 2
family2 1 0 0 2 5 2 1 1 1 1 0 0 0 0 0 0 0 0 0 NA NA 3
etc.

family1 1 2 traitnumber traitnumber ...
family1 1 3 traitnumber traitnumber ...
family1 2 3 traitnumber traitnumber ...

import pandas as pd
data = pd.read_csv('for_anna.txt.', sep=" ", header = None)
print(data)