I have a RDD which looks like this.

[a, ((b, c), d)]

I tried sorting by c by the code below

sortedMovies = countRatings.sortBy(lambda x : x[1])

but it got sorted by b.

result: [(1882, ((64.5, 33.0), 1.9545454545454546)), (1499, ((52.0, 27.0), 1.9259259259259258)),(3593, ((31.5, 19.0), 1.6578947368421053)),

how can I sort it by c?

CodePudding user response：

Your lambda is pulling out ((b, c), d) while you want it to pull out c. Therefore:

sortedMovies = sorted(countRatings, key=lambda x: x[1][0][1])