"Item;List;Tree" Access in GhPython

Is there a way to change between Item;List;Tree … Access from GhPython?

from Grasshopper.Kernel import GH_ParamAccess
if x == 0:
    access = GH_ParamAccess.item
if x == 1:
    access = GH_ParamAccess.list
if x == 2:
    access = GH_ParamAccess.tree
if (access != ghenv.Component.Params.Input[1].Access):
    ghenv.Component.Params.Input[1].Access = access

ParamAccess.gh (9 KB)


Thank you @Mahdiyar , unfortunately didn’t work with GH_ParamAccess(x); i make a little change and i believe with enum will be simpler
and this change of the used component , it will need it for other things but in this case i want switch between item/list/tree inside ghpython.
the idea is to group similar items and i need to show list from IronPython.Runtime.List without lose data tree
The second python component can do that by choose item access and use a = x, but i want to do that in the same script, that’s why i want switch between them if it is possible

from Grasshopper.Kernel import GH_ParamAccess

access = [GH_ParamAccess.item,GH_ParamAccess.list,GH_ParamAccess.tree]

if access[x] != ghenv.Component.Params.Input[1].Access:
    ghenv.Component.Params.Input[1].Access = access[x]

group.gh (9.5 KB)

Hi @seghierkhaled,
maybe something like below?

And here’s my code:

"""Provides a scripting component.
        x: The x script variable
        y: The y script variable
        a: The a output variable"""

__author__ = "bogdan"
__version__ = "2020.09.20"

import rhinoscriptsyntax as rs
from itertools import groupby
from itertools import chain
import ghpythonlib.treehelpers as th

total = 0
listChunks = []
second_list =y

for j in range(len(second_list)):
    chunk_mylist = x[total:total+second_list[j]]
    total += second_list[j]
#After running this, listChunks is a list containing sublists with the lengths found in second_list.

#print listChunks

endlist =[]
for j in range(len(listChunks)):
    lists2 = [list(listChunks[j]) for i, listChunks[j] in groupby(listChunks[j])]
    print lists2

#a= th.list_to_tree(listChunks)
b= th.list_to_tree(endlist)

200920BC preserve tree structure.gh (10.0 KB)

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Thank you @Bogdan_Chipara for help, i definitively learn from it.
I already found this solution

1 Like

Cool, yours is more elegant! I will also learn from it.

1 Like