May be there is unicode symbols problem. Try this

f = open(fn.decode("utf-8"))

@m_adam Thank you!

May be Polygonize can help you.

Make a clone of the document and turn all objects into polygon based objects.

@klints2
Try to use IsolateObjects

A helper routine to copy the objects of document to a new document (returned). All materials associated are also copied over and the links are corrected.

Hi, guys! How to properly copy the dictionary with DescIDs?
Here is example code:

import c4d 
from copy import deepcopy

def main():
    
    dId_one = c4d.DescID(c4d.DescLevel(10), c4d.DescLevel(20), c4d.DescLevel(30))
    dId_two = c4d.DescID(c4d.DescLevel(50), c4d.DescLevel(200), c4d.DescLevel(1000))
    
    dict1 = {'1':dId_one,'2':dId_two}
    dict2 =  deepcopy(dict1)

    print 'dict1 ',dict1
    print 'dict2 ',dict2

    # dict1 {'1': ((10, 0, 0), (20, 0, 0), (30, 0, 0)), '2': ((50, 0, 0), (200, 0, 0), (1000, 0, 0))}
    # dict2 {'1': ( ), '2': ( )} <--- WHY??? 

if __name__ == '__main__':
    main()

Very usefull plugin! Thanks!

How to use this tool with objects grouped in a single null?
Not working with Figure primitive :

Traceback (most recent call last):
  File "C:\Users\user\AppData\Roaming\MAXON\Cinema 4D R20_4FA5020E\plugins\OnFloor_1.0.0\OnFloor\OnFloor.pypv", line 108, in MouseInput

  File "C:\Users\user\AppData\Roaming\MAXON\Cinema 4D R20_4FA5020E\plugins\OnFloor_1.0.0\OnFloor\OnFloor.pypv", line 47, in CenterAxe
      File "C:\Users\user\AppData\Roaming\MAXON\Cinema 4D R20_4FA5020E\plugins\OnFloor_1.0.0\OnFloor\OnFloor.pypv", line 24, in MoveAxe
    ValueError: Invalid object length.

Just in case. Using my Target4D plugin you can drop your object to any surface

@ipython
"c4dpy.exe/app is an executable that runs Cinema 4D in Python command-line mode. It is not only an interpreter, it brings extra features for daily Python development with external code editors/IDEs: auto-completion and debugging."

Hello everybody! There is any idea how it possible to change Hair preferences using python api?
Using Script Log i get this code. But its not working unlike other preferences

import c4d

def main():
    def tool():
        return c4d.plugins.FindPlugin(doc.GetAction(), c4d.PLUGINTYPE_TOOL)

    def object():
        return doc.GetActiveObject()

    def tag():
        return doc.GetActiveTag()

    def renderdata():
        return doc.GetActiveRenderData()

    def prefs(id):
        return c4d.plugins.FindPlugin(id, c4d.PLUGINTYPE_PREFS)

    tag()[c4d.HAIR_PREFS_SETUP_TOCHILD] = True #why tag() unlike prefs(id)???
    prefs(465001634)[c4d.PREF_BROWSER_SHOWFOLDER] = False #this preferences parameter works

if __name__=='__main__':
    main()

Thanks!

You have to combine objects to null, for example:

import c4d
from c4d import gui

def smc(listy):
    null = c4d.BaseObject(c4d.Onull)

    for o in listy:
        o.InsertUnder(null)

    res = c4d.utils.SendModelingCommand(command = c4d.MCOMMAND_JOIN,
                                    list = [null],
                                    mode = c4d.MODELINGCOMMANDMODE_ALL,
                                    bc = c4d.BaseContainer(),
                                    doc = doc)
    return res[0]

def main():
    obs = doc.GetActiveObjects(0)
    doc.InsertObject(smc(obs))
    c4d.EventAdd()

if __name__=='__main__':
    main()