Two ways to create a two-dimensional array Python

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# 列表推导式
# 5*5二维列表
b = [[0 for i in range(5)] for x in range(5)]

# for循环 避免浅拷贝
# 5*5二维列表
a = []
for i in range(5):
    a.append([])
    for j in range(5):
        a[i].append(0)

Out:
[[0, 0, 0, 0, 0], [0, 0, 0, 0, 0], [0, 0, 0, 0, 0], [0, 0, 0, 0, 0], [0, 0, 0, 0, 0]]