python - 如何保存迭代并使用它？

Question

我想像这样保存迭代“网格”：

print(grid)
['*', '*', '*', '*']
['*', '*', '*', '*']
['*', '*', '*', '*']
['*', '*', '*', '*']

但是在我的代码中，如果我使用 print(grid) 这会出现

files = 4    
columns = 4    
grid = []

for i in range(files):
    grid.append([])
    for j in range(columns):
        grid[i].append("*")

for i in range(0, len(grid)):
    print(grid[i])

print(grid)
[['*', '*', '*', '*'], ['*', '*', '*', '*'], ['*', '*', '*', '*'], ['*', '*', '*', '*']]

我该怎么做？感谢一切

标签： pythonpython-3.xlistarraylist

Answer 1

You can't 'save' the grid in a different manner. You can print if differently though:

for row in grid:
    print(row)

This way you loop over the grid list and print its elements 1 per line. The elements are in your case lists: ['*', '*', '*', '*'].