The documentation is not very clear about the method for computing the number of samples estimated for a significant result, precisely the number of N. For example, does this N relate to one distribution? So, is the output the total number of observations (across both distributions in an A/B test), or is it just one? I've seen conflicting uses; the documentation doesn't specify precisely what it outputs.
statsmodels.stats.power.tt_ind_solve_power(effect_size=None, nobs1=None,
alpha=None, power=None, ratio=1.0, alternative='two-sided')
Available from the following link https://www.statsmodels.org/stable/generated/statsmodels.stats.power.tt_ind_solve_power.html