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The basics · Lists

Lists

Many values under one name — and two names for one list. · 12 minutes

A list holds values in order: nums = [3, 1, 4]. nums[0] is the first, nums[-1] the last, len(nums) how many. nums.append(5) adds to the end. for n in nums: visits each one.

Predict first

What does this print?

1a = [1, 2, 3]
2b = a
3b.append(4)
4print(a)