I can't progress after the lesson string function in the introduction to python course. why?

Question

When I complete the lesson "string functions" in the Introduction to Python course, It gives me a practise problem to solve. after I solv the problem, it again starts the "String functions" lesson. why is it happening? do i have to buy the pro version to continue?

Answer 1

Md. Shafin hossain Rayyan ,

No you don't need pro version to continue...

Make sure that the practice problem have passed all test cases??

If it is passed means and still problem persists ...
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