Cannot import open3d packages(.io , .ml , .t ) into the python script after installation.

[dhruvmalik007]

Checklist

• I have searched for similar issues.
• For Python issues, I have tested with the latest development wheel.
• I have checked the release documentation and the latest documentation (for main branch).

Steps to reproduce the issue

I installed the Python package wheel version from the website:

pip install  https://storage.googleapis.com/open3d-releases/python-wheels/open3d-0.18.0+0cf605f-cp38-cp38-manylinux_2_27_x86_64.whl

Then, I am importing the open3D in the vscode :

from open3D import io
#.....
io.read_point_cloud()  ## its not available in the .venv/python3.8/site-packages

Error message

NA : only that I am not able to find the api's for the given functions as described in the documentation.

Open3D, Python and System information

- Operating system: Ubuntu 20.04
- Python version: Python 3.8.10 
- Open3D version: output from python: 0.18.0
- System architecture: x86 
- Is this a remote workstation?: yes 
- How did you install Open3D?: pip
- Compiler version (if built from source): gcc 9.4.0

Additional information

No response