Import Errror for python pg module

Question

I am having trouble using the pg module in my code. I've installed it using pip. But when I go to run it I get the following error:

Traceback (most recent call last):
  File "Contract_gen.py", line 2, in <module>
    import pg
  File "C:\Python27\lib\site-packages\pg\__init__.py", line 1, in <module>
    from .core import (
  File "C:\Python27\lib\site-packages\pg\core.py", line 6, in <module> 
    from . import glfw
  File "C:\Python27\lib\site-packages\pg\glfw.py", line 140, in <module>
    raise ImportError("Failed to load GLFW3 shared library.")
ImportError: Failed to load GLFW3 shared library.

Did you try Googling your error message? http://stackoverflow.com/q/35645928/3001761 — jonrsharpe, Sep 29 '16 at 12:44
I sure did but I did not find that thread! Used pip to install glfw, and I get no change. — JoesLost, Sep 29 '16 at 13:12
If it is not a Python package what is it and where can I find it, brew is the package manager for mac os, correct? I am using Windows atm or Linux at home. — JoesLost, Sep 29 '16 at 13:19

score 3 · Accepted Answer · answered Sep 29 '16 at 13:09

3

It seems like to require the GLFW3 library. Download & install it and the error should be gone. If you use macOS you can get it via brew.

answered Sep 29 '16 at 13:09

Armen Avetisyan

1,140
10
29

1

I use windows or Linux. Pip does not find GLFW3. I cant seem to find a package index for it either. Where can I find it? – JoesLost Sep 29 '16 at 13:16
You can get it from here: http://www.glfw.org/ Please mark the question as answered if it is. – Armen Avetisyan Sep 29 '16 at 13:18
confirming answer, I was able to get py glfw working after installing glfw through homebrew – Enigma22134 Dec 20 '18 at 01:10

Raphaël Poli · Answer 2 · 2017-07-07T15:28:10.317

0

Your version of OpenGL might be too old compared to the pg requirement which is 3.1.0 as specified in https://github.com/fogleman/pg/blob/master/requirements.txt

You can re install python-openGL with pip:

$ pip install PyOpenGL PyOpenGL_accelerate

This removes this problem but creates other errors for me.

note, besides, that this problem seems to be mentioned in https://github.com/fogleman/pg/issues

edited Jul 07 '17 at 15:28

answered Jul 07 '17 at 15:22

Raphaël Poli

74
10

score 0 · Answer 3 · answered Jan 10 '19 at 22:18

How to solve for windows:

Download Windows pre-compiled binaries from https://www.glfw.org/download.html
copy (and replace) the file lib-mingw-w64\glfw3.dll to ...\Python27\Lib\site-packages\glfw\glfw3.dll
Done

For me, glfw was working fine until one morning when it suddenly wasn't. This solution worked for me. I don't know if this is the correct way to solve it but it worked for me.

Import Errror for python pg module

3 Answers3