To see usage of RAM in Python notebook

how can I see ram usage status at the time of execute a code?

In colab, you can directly check on the upper right bar.

If you want to do memory profiling for a particular cell, then you should check out these magic commands:

  1. %memit
  2. %mprun

For detailed info, you can check the implementation here : Profiling and Timing Code | Python Data Science Handbook

Do I need to call any module To use “%memit” this magic command?

Yes you need to install memory_profiler first. Refer the shared link