OpenGL is a powerful library for rendering 2D and 3D graphics, and Python is a popular programming language known for its simplicity and versatility. In this tutorial, we will learn how to use OpenGL in Python to view obj files, which are commonly used for storing 3D model data.

First, make sure you have Python installed on your computer. You can download it from the official website and follow the installation instructions. Once you have Python, you can install the PyOpenGL library, which provides bindings for OpenGL in Python. You can install it using pip, the Python package manager, by running the command 'pip install PyOpenGL' in your terminal or command prompt.

Next, you'll need an obj file to work with. You can find obj files online or create your own using 3D modeling software. Once you have the obj file, you can use the PyWavefront library to load the obj file and extract the vertex and face data. You can install this library using pip as well, with the command 'pip install PyWavefront'.

Once you have the obj file and the necessary libraries installed, you can start writing the Python code to view the obj file using OpenGL. First, import the necessary libraries at the beginning of your Python script:

```python

import pygame

from OpenGL.GL import *

from OpenGL.GLUT import *

from OpenGL.GLU import *

import pywavefront

```

Next, you can use the PyWavefront library to load the obj file and then iterate through the vertices and faces to render the 3D model on screen. You can use the following code as a starting point:

```python

scene = pywavefront.Wavefront('path_to_your_obj_file.obj')

vertices = scene.vertices

faces = scene.mesh_list[0].faces

def draw():

glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT)

glLoadIdentity()

# Your rendering code goes here

def main():

pygame.init()

display = (800, 600)

pygame.display.set_mode(display, DOUBLEBUF|OPENGL)

gluPerspective(45, (display[0]/display[1]), 0.1, 50.0)

glTranslatef(0.0, 0.0, -5)

# Set up the projection and modelview matrices

while True:

for event in pygame.event.get():

if event.type == pygame.QUIT:

pygame.quit()

quit()

draw()

pygame.display.flip()

pygame.time.wait(10)

main()

```

This is a simple example of how you can use OpenGL in Python to view obj files. You can customize and expand on this code to add lighting, textures, and other advanced features to your 3D model viewer.

Overall, using OpenGL in Python to view obj files is a great way to dive into the world of computer graphics and 3D modeling. With the power of Python and the flexibility of OpenGL, the possibilities are endless for creating and rendering 3D models on screen.