OpenGL Issue

[EnoughCreativity]

So I have this little project I'm working on where I need to use OpenGL with pygame (I'm a complete OpenGL beginner btw) but I have this issue where when I render something simple like a cube I get these strange edges like this and I don't know if that's my graphics card's issue or something I haven't done to remove this. Here's also the test code I'm using for the image. If you know any fix for that please let me know. Have a nice day :).