Why I am not able to practice code
Sid Siddique , you have just entered the sololearn python tutorial. If you have other sources than sololearn, you should be able to solve code coach exercices. If not, please continue reading and practicing in the sololearn python tutorial. Without being familiar with the basics of python, you will not be successful in solving exercises.
U can practise python code coach problems in the Community Section. U can play around with python codes using "try it yourself" in each lessons. Or U can practise python by challenging others..