Looking for data/info on a perticular data-proccesing problem.

[bowlofred]

Looks like you're looking for topological sorting. If you search for that term, you can find lots of info on it, including algorithms and modules.

import toposort
from collections import defaultdict

data = [
    ["bats", "eagles", "aligators"],
    ["bats", "cats", "eagles"],
    ["cats", "dogs", "eagles"],
]

ordering = defaultdict(set)
for chunk in data:
    for index in range(len(chunk) - 1):
        ordering[chunk[index + 1]].add(chunk[index])

print(toposort.toposort_flatten(ordering))

Output:
['bats', 'cats', 'dogs', 'eagles', 'aligators']