How can we automatically (say via mechanical scripting) create directional point masses?

There are many ways of doing this. An attempt of such script is seen below.

It will read in the point mass data from the csv file , and based on this, create the point masses with their apdl command snippets that define the directional point mass data specified in the csv file.

import csv
mx=[]
my=[]
mz=[]
names=[]
with open('D:\mymass.csv', 'rb') as f:
    reader = csv.reader(f)
    for row in reader:
        mz.append(row[3])
        my.append(row[2])
        mx.append(row[1])
        names.append(row[0])
 
geometry = Model.Geometry
 
for ii in range(0,len(names)):
    point_mass = geometry.AddPointMass()
    cs=point_mass.AddCommandSnippet()
    ns= DataModel.GetObjectsByName(str(names[ii]))[0]
    point_mass.Location=ns
    point_mass.Mass=Quantity('0.001 [kg]')
    cs.AppendText("keyopt,_tid,1,0\n")
    cs.AppendText("keyopt,_tid,3,0\n")
    cs.AppendText("r," +"_tid," +str(mx[ii]) + "," + str(my[ii]) +"," +str(mz[ii]) + "," + str(0) +"," + str(0) + "," + str(0) + "\n")

or in a single loop:

geometry = Model.Geometry
with open('D:\mymass.csv', 'rb') as f:
    for line in f:
        mz=(line.Split(',')[3]).Split('\n')[0]
        my=(line.Split(',')[2])
        mx=(line.Split(',')[1])
        names=(line.Split(',')[0])
        point_mass = geometry.AddPointMass()
        cs=point_mass.AddCommandSnippet()
        ns= DataModel.GetObjectsByName(str(names))[0]
        point_mass.Location=ns
        point_mass.Mass=Quantity('0.001 [kg]')
        cs.AppendText("keyopt,_tid,1,0\n")
        cs.AppendText("keyopt,_tid,3,0\n")
        cs.AppendText("r," +"_tid," +str(mx) + "," + str(my) +"," +str(mz) + "," + str(0) +"," + str(0) + "," + str(0) + "\n")

and something unrelated:

(retrieve selected object in the mechanical tree, and if point mass print yes)

ob=Tree.FirstActiveObject
if (ob.GetType())==Ansys.ACT.Automation.Mechanical.PointMass:
    print('yes')
else:
    print('no')