Wipro Python Developer interview questions

Nested list program was asked

Started with technical questions -- 1. Given a nested list. Write python program to flatten it. - input_list = [ [1,2], [3,4], [[4] , [6]] ] - output_list = [1,2,3,4,4,6] 2. Given a string. Return total number of times each character occurs in that string. 3. Explain Generators in Python. 4. How to create empty Pandas dataframe? Create dataframe using a dictionary. 5. Asked to rate myself in SQL, AWS (name the relevant services too). 6. Have you worked in ML, what kind of use cases? 7. Have you written class/object oriented or functional based programming ?