I don't want to draw the histogram!

When I do this (this is in python, but it’s not this the problem):

 histoTAUB0s = TH1F("histoTAUB0s","TAU B0s segnale selezionato",n_bin_tau,0,taumax)

I don’t want to draw the histogram, I only want to fill the histogram! How can I do?

use drawing option “goff”, see doc