Hello @Nazli,
We encourage learners to finish the labs/assignments on coursera, not just because we tested them on coursera and we cannot guarantee and we do not support them to work as expected in other environments, but also because editing the notebook outside coursera can alter the notebook’s metadata which may cause trouble to the assignment grader when you submit it. In the case of grader failing to grade because of the metadata corruption, you would need to move your work manually to a coursera based notebook and resubmit.
Therefore, I suggest you to finish them on coursera, but you may keep a backup by downloading the notebooks and all supporting files provided by the course team by following the instructions here.
Note that the supporting files are necessary to run the notebooks, but they may not be sufficient when a notebook also requires some other Python packages. For this, we do not have an installation guideline to reproduce a coursera’s environment on your computer, so you might need to google through how to install each package one by one on your environment until all package dependencies problem are resolved.
Cheers,
Raymond