Python Nodes Basics

[Yna_Db]

This second post relates to IMPORTS:

Python imports

Pawel, These are the most used imports: Thank you,

Dividing parts with dynamo

Now for the python script: ##CLR Dynamo uses a version of python called IronPython which is capable of dealing with .NET libraries. To interact with the Revit API we have to load an .NET assembly, a dll file named RevitAPI.dll, and for this we need the clr module from Iron Python. (http://ironpython.net/documentation/dotnet/) Thus the first lines of the code looks like this: import clr clr.AddReference('RevitAPI') from Autodesk.Revit.DB import * ##Generic collections If we look at the ar…

Use the Flatten node in python script

Hi Hannes, You need to import DSCore for DesignScript nodes to work and then use it like this, where the second argument is the amount of levels to flatten: [image]

Access Dynamo's Package Paths from Python

I have been doing this: import os appDataPath = os.getenv('APPDATA') dynPath = appDataPath + r"\Dynamo\0.9" if dynPath not in sys.path: sys.path.Add(dynPath) bbPath = appDataPath + r"\Dynamo\0.9\packages\Bumblebee\extra" if bbPath not in sys.path: try: sys.path.Add(bbPath) import bumblebee as bb except: import xml.etree.ElementTree as et root = et.parse(dynPath + "\DynamoSettings.xml").getroot() for child in root: if child.tag == "CustomPackageFolders": for path in child:…

How to load external Python modules?

Hello Nikolay! Try this: 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') import sqlite3 import xml

Cant import random module to Python

You would first have to define a path to IronPython’s librar, append it to the system path and then finally import the module. pyt_path = r'C:\Program Files (x86)\IronPython 2.7\Lib' sys.path.append(pyt_path) import random #The inputs to this node will be stored as a list in the IN variables. dataEnteringNode = IN #Assign your output to the OUT variable. OUT = random.random() Works as expected: [image]

https://forum.dynamobim.com/t/how-to-convert-dynamo-nodes-to-python-script/13050/2

Using dynamo to selected Element ID's via a HTML file

import re dataEnteringNode = IN html = IN[0] exp = r’(?<=id\s)([0-9]*)' match = re.findall(exp, html) if match: OUT = set(match) else: OUT = ‘Not Found’  

Revit API & python relations

Hi sajo We know it’s overwhelming, but you are more likely to get quick responses if you break these questions down into separate posts/subjects. In any case, I will try to touch on some of the points: What does the first four similar lines of every script do…? See comments below import clr # imports Common Language Runtime library .This will serve as a bridge between python and the .NET wold # See this: http://ironpython.net/documentation/dotnet/dotnet.html clr.AddReference('Proto…

https://forum.dynamobim.com/t/rounding-numbers-in-python/14671/11

Phyton Script - How to use it on Dynamo

This should do it: stringlist = IN[0] import itertools def generate_groups(lst, n): if not lst: yield [] else: for group in (((lst[0],) + xs) for xs in itertools.combinations(lst[1:], n-1)): for groups in generate_groups([x for x in lst if x not in group], n): yield [group] + groups OUT = generate_groups(stringlist, 2)