如何以最简洁地道的方式向数组列表添加元素？能否完全移除代码中的循环？

Hey there! Let's figure out how to generate your target list [[0, -1], [1, 0], [2, 1]] without writing any explicit loops in your code. Here are a couple of clean, loop-free approaches in Python:

Approach 1: Using zip() + map() #

This method leverages built-in functions to handle pairing and conversion without manual loop logic:

result = list(map(list, zip(range(3), range(-1, 2))))

• range(3) generates the sequence 0, 1, 2
• range(-1, 2) generates -1, 0, 1
• zip() pairs corresponding elements from the two ranges into tuples
• map(list, ...) converts each tuple to a list
• Wrapping the whole thing in list() gives you the final nested list.

Approach 2: List Comprehension (Implicit Loop) #

If you’re okay with Python’s implicit loop syntax sugar, this is an even more concise and Pythonic option:

result = [[i, i-1] for i in range(3)]

This directly constructs each sublist by calculating i and i-1 for every value in range(3)—no manual for/while loops in your code at all.

Both approaches will output exactly the list you need, with zero hand-written loops.

内容的提问来源于stack exchange，提问作者John Difool