Shuffling a list of objects

random.shuffle should work. Here’s an example, where the objects are lists:

from random import shuffle

x = [[i] for i in range(10)]

# print(x)  gives  [[9], [2], [7], [0], [4], [5], [3], [1], [8], [6]]

Note that shuffle works in place, and returns None.

More generally in Python, mutable objects can be passed into functions, and when a function mutates those objects, the standard is to return None (rather than, say, the mutated object).

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