如何打印出网格

要打印出网格，可以使用如下代码：

for i in range(5):
    for j in range(5):
        print("+---", end="")
    print("+")
    for j in range(5):
        print("|   ", end="")
    print("|")
print("+---" * 5, end="")
print("+")

这段代码会打印出一个大小为5x5的网格，每个格子的边框由"+"和"-"组成，内部为空格"|"。输出结果如下：

+---+---+---+---+---+
|   |   |   |   |   |
+---+---+---+---+---+
|   |   |   |   |   |
+---+---+---+---+---+
|   |   |   |   |   |
+---+---+---+---+---+
|   |   |   |   |   |
+---+---+---+---+---+
|   |   |   |   |   |
+---+---+---+---+---+
``