Python Script, Controlling List Structure Output

Revit
1

I am trying to understand how to write data to lists using python code.

In my example shown below:

dynamo%20script
dynamo script.PNG877×752 121 KB

python%20image
python image.PNG1119×613 114 KB

I would love to be able to have (2) lists created, with (4) points in each sublist (current output has data structured within too many list levels). I know I could easily utilize the flatten command using levels, but there has to be a way to do this in the python script as well, right?

2

let’s also ignore the fact that I am pulling the wrong indices:

python%20image
python image.PNG1179×822 153 KB

now pulling the correct data :grinning:, question still remains though

3

It is hard to tell what the input list structure is like and what you want the output structure to be.

Is this what you mean?

oddevencombine
oddevencombine692×410 15.9 KB

4

That is what I desired. Sorry away from the computer now for the night or else I would give a better screen shot.

5

It’s not the most elegant or pythonic way but it works:

# Enable Python support and load DesignScript library
import clr
clr.AddReference('ProtoGeometry')
from Autodesk.DesignScript.Geometry import *

# The inputs to this node will be stored as a list in the IN variables.
mList = IN[0]

for i,v in enumerate(mList): #Add the odds onto the evens
	if i % 2 == 0:
		pass
	else:
		for sv in v:
			mList[i-1].append(sv)

ind = range(1,len(mList),2)
ind.reverse()
for i in ind: #Delete the odds using .pop()
	mList.pop(i)


OUT = mList
6

Alternatively, shorter version:

# Enable Python support and load DesignScript library
import clr
clr.AddReference('ProtoGeometry')
from Autodesk.DesignScript.Geometry import *

# The inputs to this node will be stored as a list in the IN variables.
mList = IN[0]
ind = range(1,len(mList),2)
ind.reverse()

for i in ind:
	temp = mList.pop(i)
	for v in temp:
		mList[i-1].append(v)

OUT = mList
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