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Several construction methods of Python list two-dimensional array

編輯:Python

Constructs a two-dimensional array with 10 rows and 5 columns.Equivalent to 10 elements, each element is still a list, and there are 5 elements in the list;

1. Scheme 1

dp = [[0 for _ in range(5)] for _ in range(10)]

2. Scheme 2

dp=[[0]*5 ]*10

3. Option 3: (a bit shameless, hybrid method, way of making people's mentality)

dp =[[0]*5 for _ in range(10)]

4. Option 4:

dp = [[0 for _ in range(5)]] * 10

I prefer the second method, which is concise and clear.


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