cal_saltbrige(selection_1, selection_2, name, a,b,cutoff) elif (a_resn in ['ASP','GLU'] )...cal_saltbrige(selection_1,selection_2,name, a,b,cutoff)def cal_saltbrige(selection1,selection2,name,a...,b,cutoff): x = cmd.centerofmass(selection1) y = cmd.centerofmass(selection2) dist = math.sqrt..., selection2, mode=4, label=0) return namedef DA_Hbond(DA_type,select1,select2,cutoff='3.5',angle=...'150'): hbond_pairs = [] pairs = cmd.find_pairs(select1, select2, mode=0, cutoff=cutoff) for