this code returns data that's not iterable, i.e. I see the distinct data bit am not able to iterate over it in code. Any other way that enables me to do it. I tried using toPandas() to convert in it into Pandas df and then get the iterable with unique values. However, running into '' Pandas not found' error message. How can I install Pandas i my pyspark env, if my local already has Pandas running!