Python output diffrence between dynamo and python idle

Developers
1

Hi all, I stuck on a problem while trying to optimize my dynamo script. This simple method should with every loop add number to random item in a list, but after the process i got sum bigger or smaller than I did loops and adding +1. Here is my code and printscreen. In python idle everything working correct.
Thank you for help in advance.

import clr
clr.AddReference('ProtoGeometry')
from Autodesk.DesignScript.Geometry import *
import sys
sys.path.append(r'C:\Program Files (x86)\IronPython 2.7\DLLs')
sys.path.append(r'C:\Program Files (x86)\IronPython 2.7\Lib')
#The inputs to this node will be stored as a list in the IN variables.


looplength = IN[0]
a = IN[1]

import random

def addrandom(n):
	n[random.choice(range(len(n)))] += 1
	

for x in range(IN[0]):
	addrandom(a)
	

OUT = a

python%20problem
python problem.JPG1358×1108 184 KB

EDIT: Python idle was 3.7 Dynamo 2.0 Revit 2019. Looked if random.choice was different in 2.7 but everything seems the same. Looks like a sort of bug for me

.

1 Like
2

what version of dynamo is this?
what version of python are you running in idle?

1 Like
3

@2shy It’s working for me

image
image.png955×577 43.1 KB

EDIT: Actually it’s not. it gives another sum if disconnect and reconnect the code block with the number 38

4

Python idle is 3.7 and dynamo is 2.0 Revit 2019, is it any significance?

1 Like
5

ironPython is 2.7 in Dynamo - so maybe :slight_smile:

1 Like
6

@2shy I don’t know why but if you change your function as shown below it works.

def addrandom(n):
	randomInd = random.choice(range(len(n)))
	n[randomInd] += 1

Dynamo%20IronPython
Dynamo IronPython.gif1056×695 99.1 KB

1 Like
7

Well thats a mystery, big thanks.

1 Like