Does anyone know of an elegant way to get the Element.GetParameterValueByName to work with elements that are organized into nested lists?
See my example below:
My desired result is shown in red and should yield all 20s in a list format that matches the given element format.
Thanks!
A python script from a thread earlier this month would work:
"""
LIST : MATCH LEVELS
-
a dynamoPython script, visit the website for more details
https://github.com/Amoursol/dynamoPython
"""
__author__ = 'Kenzo Bird - birdkenzo@gmail.com'
__dynamoforum__ = 'Kennyb6'
__version__ = '1.0'
"""
Script to match structure of one list to another.
IN[0] must be completely flattened prior to this script.
Empty lists in either inputs may give unwanted results.
"""
def recCount(_lists, c):
# Count all elements in the structure list (IN[1])
for _list in _lists:
if isinstance(_list, list):
c = recCount(_list, c)
else:
c += 1
return c
def recMatch(_list, _matches, _out, c):
"""
Recreate the value list (IN[0]) according to the structure list (IN[1])
_list = entire value list
_matches = the current list level of the structure list
_out = value list matching the structure list to be passed on
c = count to be used as the current index of the value list
"""
for _match in _matches:
if isinstance(_match, list): # if list, recurse another level deeper
outTemp, c = recMatch(_list, _match, [], c)
_out.append(outTemp)
else:
_out.append(_list[c])
c += 1
return _out, c
# Inputs:
mList = IN[0] # List of values, flattened to single level
toMatch = IN[1] # Original structured list
outList = [] # Need blank list to be appended, will be new value list
c = 0
mC = 0
# Checks that both lists are equal value to prevent invalid index errors
if len(mList) == recCount(toMatch, c):
OUT = recMatch(mList, toMatch, outList, mC)[0]
else:
in0Len = "IN[0] length = " + str(recCount(mList, c))
in1Len = "IN[1] length = " + str(recCount(toMatch, c))
OUT = ["List lengths do not match.", in0Len, in1Len]
Note that you should flatten the input to GetParameterValueByName first.
You probably could have used Lacing or Levels to make this hope. Without another node.
Levels doesn’t work in this case, as far as I tested. If you can make it work, please show us.
