Layers in Phython Scripting

@miano wrote:

This is a script that someone kindly provided an outline for me and I have have cleaned up—that still needs work. The objective of the script is to import a CSV file containing layer names. It is supposed to read the file. If it finds a string, it is to create a new layer below the current layer. If finds a value, it is to add a point in the last created layer.

The problem is that the script creates new layers in a mixture of locations. It seems to create some layers below the current layer and some layers at the root.

Why would that be?

I think I have a lack of understanding on how layers work the python interface. The CurrentLayer() function returns a string. How can I distinguish between "Abc"s with a layer structure like this:

Layer 1
     Abc
Layer 2
   Abc

Script:

import Rhino
import csv
import rhinoscriptsyntax as rs
import random


def importtolayers():

    file = rs.OpenFileName(filter = "CSV files|*.csv|Text files|*.txt||", extension = ".csv")
     
    with open(file, "rU") as f:
        reader = csv.reader (f, dialect=csv.excel)
        parentlayer = rs.CurrentLayer ()
        
        layer = parentlayer
        print "Root Layer: ", parentlayer
        for line in reader:
            value = line[0].strip () ;
            try:
                if value <> "":
                    float (value)
                    x = rs.AddPoint(rs.Str2Pt(line))
                    if x: rs.ObjectLayer(x, layer)
                
            except ValueError:
                print "New Layer ", value ;
                color = rs.CreateColor (random.randint (0, 255), random.randint (0, 255), random.randint (0, 255))
                layer = rs.AddLayer(value, color=color, parent=parentlayer)
importtolayers()

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