Python: AttributeError: 'module' object has no attribute 'AddReference'?

Question

Am trying to use clr.AddReference and clr.AddReferenceToFile to import an assembly, but python(2.7) keeps making this error:

Traceback (most recent call last):
  File "<pyshell#5>", line 1, in <module>
    clr.AddReference("UnityEngine")
AttributeError: 'module' object has no attribute 'AddReference'

Can anyone tell me how to fix this.

score 45 · Answer 1 · edited Dec 24 '20 at 11:16

45

Once I met this issue. There is a package named clr while the pythonnet package's alias is also clr. So I removed clr by "pip uninstall clr" and then installed pythonnet by 'pip install pythonnet'. Finally, everything works well.

edited Dec 24 '20 at 11:16

ASLAN

629
1
7
20

answered Apr 03 '18 at 05:25

Guancheng Li

459
4
3

2

Does pythonnet work on Linux systems? I get an error when installing: `error: option --single-version-externally-managed not recognized` – Soerendip Jan 19 '21 at 22:23
I had this problem to and can confirm that this answer works. – Ant Jan 14 '22 at 16:28

score 8 · Answer 2 · answered Nov 29 '20 at 02:44

8

You must be using the wrong 'clr' module. remove it

pip uninstall clr

And then install pythonnet

pip install pythonnet

answered Nov 29 '20 at 02:44

Abhijeet sinha

403
4
4

score 4 · Answer 3 · answered Mar 18 '18 at 20:10

4

run the code

import clr
dir(clr)

if the reasult is as ['StyleBuilder', 'builtins', 'cached',....] then the problem is your IDE is installing the WRONG Clr module

answered Mar 18 '18 at 20:10

Afshin Amiri

3,438
1
20
21

2

So whats the correct version to download in that case? Any idea – Tyler Nov 16 '20 at 16:56

score 0 · Answer 4 · answered Mar 01 '23 at 01:25

In addition to having normal clr installed, the mistake I made was the little script I was using to test python.net was named pythonnet.py. So when python.net was trying to load itself, it found my script instead and problems ensued. If you get this specific error:

partially initialized module 'clr' has no attribute 'AddReference'

That could be why.

Python: AttributeError: 'module' object has no attribute 'AddReference'?

4 Answers4

Linked