# How to write "Arc.ByFillet" node in Python?

**URL:** <https://forum.dynamobim.com/t/how-to-write-arc-byfillet-node-in-python/10134>\
**Category:** DesignScript\
**Tags:** dynamo\
**Created:** [March 7, 2017, 6:23am UTC](https://forum.dynamobim.com/t/how-to-write-arc-byfillet-node-in-python/10134 "2017-03-07T06:23:44Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![urdiafa](https://avatars.discourse-cdn.com/v4/letter/u/7ea924/32.png) [@urdiafa](https://forum.dynamobim.com/u/urdiafa)\
**Post date:** [March 7, 2017, 6:23am UTC](https://forum.dynamobim.com/t/how-to-write-arc-byfillet-node-in-python/10134/1 "2017-03-07T06:23:44Z")

</div>

Any suggestion will be apreciated  
 ![](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/d/9/d931a77503042f235610e85dd6d7ce33b0bb4b5c.png)

import clr  
clr.AddReference(‘ProtoGeometry’)  
from Autodesk.DesignScript.Geometry import \*

clr.AddReference(“RevitAPIUI”)  
from Autodesk.Revit.UI import TaskDialog

clr.AddReference(“RevitAPI”)  
import Autodesk  
from Autodesk.Revit.DB.Events import \*  
from Autodesk.Revit.DB import \*

clr.AddReference(“RevitNodes”)  
import Revit  
clr.ImportExtensions(Revit.Elements)  
clr.ImportExtensions(Revit.GeometryConversion)

plist = IN[0]  
listnum = IN[1]  
for i in range (0 , IN[1]):  
listmain = plist[i]  
curve11 = listmain[0]  
curve22 = listmain[1]  
curev1 = UnwrapElement (curve11)  
curev2 = UnwrapElement (curve22)

```
Autodesk.DesignScript.Geometry.Arc.ByFillet(Autodesk.DesignScript.Geometry.Curve (curve1),Autodesk.DesignScript.Geometry.Curve (curve2),System.Double (0.0))

```

OUT = curve11