利用python写一段九九乘法表

### 回答1：
以下是Python编写的九九乘法表代码：

for i in range(1, 10):
    for j in range(1, 10):
        product = i * j
        print(f"{i} × {j} = {product:2d}", end="\t")
    print()

代码解释：

- `for i in range(1, 10):` 循环变量 `i` 从1到9，表示被乘数。
- `for j in range(1, 10):` 内层循环变量 `j` 也从1到9，表示乘数。
- `product = i * j` 用 `i` 乘以 `j` 得到乘积 `product`。
- `print(f"{i} × {j} = {product:2d}", end="\t")` 使用格式化字符串输出每个乘法表达式，`:2d` 表示将 `product` 右对齐输出，占用两个字符位置。
- `end="\t"` 表示输出内容之间用制表符隔开。
- `print()` 用于换行，每行乘法表达式输出完毕后换行输出下一行。

输出结果：

1 × 1 =  1	1 × 2 =  2	1 × 3 =  3	1 × 4 =  4	1 × 5 =  5	1 × 6 =  6	1 × 7 =  7	1 × 8 =  8	1 × 9 =  9	
2 × 1 =  2	2 × 2 =  4	2 × 3 =  6	2 × 4 =  8	2 × 5 = 10	2 × 6 = 12	2 × 7 = 14	2 × 8 = 16	2 × 9 = 18	
3 × 1 =  3	3 × 2 =  6	3 × 3 =  9	3 × 4 = 12	3 × 5 = 15	3 × 6 = 18	3 × 7 = 21	3 × 8 = 24	3 × 9 = 27	
4 × 1 =  4	4 × 2 =  8	4 × 3 = 12	4 × 4 = 16	4 × 5 = 20	4 × 6 = 24	4 × 7 = 28	4 × 8 = 32	4 × 9 = 36	
5 × 1 =  5	5 × 2 = 10	5 × 3 = 15	5 × 4 = 20	5 × 5 = 25	5 × 6 = 30	5 × 7 = 35	5 × 8 = 40	5 × 9 = 45	
6 × 1 =  6	6 × 2 = 12	6 × 3 = 18	6 × 4 = 24	6 × 5 = 30	6 × 6 = 36	6 × 7 = 42	6 × 8 = 48	6 × 9 = 54	
7 × 1 =  7	7 × 2 = 14  

### 回答2：
九九乘法表是一个经典的程序设计练习。我们可以使用Python编写一个简单的九九乘法表程序。

for i in range(1, 10):
for j in range(1, i+1):
print('{} × {} = {}'.format(j, i, i*j), end=' ')
print()

运行这段代码将会得到如下结果：

1 × 1 = 1
1 × 2 = 2 2 × 2 = 4
1 × 3 = 3 2 × 3 = 6 3 × 3 = 9
1 × 4 = 4 2 × 4 = 8 3 × 4 = 12 4 × 4 = 16
1 × 5 = 5 2 × 5 = 10 3 × 5 = 15 4 × 5 = 20 5 × 5 = 25
1 × 6 = 6 2 × 6 = 12 3 × 6 = 18 4 × 6 = 24 5 × 6 = 30 6 × 6 = 36
1 × 7 = 7 2 × 7 = 14 3 × 7 = 21 4 × 7 = 28 5 × 7 = 35 6 × 7 = 42 7 × 7 = 49
1 × 8 = 8 2 × 8 = 16 3 × 8 = 24 4 × 8 = 32 5 × 8 = 40 6 × 8 = 48 7 × 8 = 56 8 × 8 = 64
1 × 9 = 9 2 × 9 = 18 3 × 9 = 27 4 × 9 = 36 5 × 9 = 45 6 × 9 = 54 7 × 9 = 63 8 × 9 = 72 9 × 9 = 81

这段代码使用了两个嵌套的for循环。外层的循环遍历1到9，表示每一行的行号。内层的循环遍历1到外层循环的当前值，表示每一行的列数。在内层循环中，我们使用`print`函数输出九九乘法的式子，并使用格式化字符串将乘积展示出来。内层循环结束后，我们调用`print`函数输出一个换行符，使得每一行的乘法式分行展示。  

### 回答3：
可以使用Python的循环和打印函数来编写九九乘法表。下面是一个示例代码：

for i in range(1, 10):
for j in range(1, i+1):
print(f"{j} × {i} = {i * j}", end="\t")
print()

在这段代码中，我们利用两个嵌套的for循环来遍历每一行和每一列。外层循环用于控制行数，从1到9。内层循环用于控制列数，从1到当前行数。通过打印函数将每个乘法算式打印出来，格式为"第一个因子 × 第二个因子 = 乘积"。在每行的乘法算式打印完后，使用`print()`函数换行。

终端运行这段代码，可以输出如下的九九乘法表：

1 × 1 = 1
1 × 2 = 2 2 × 2 = 4
1 × 3 = 3 2 × 3 = 6 3 × 3 = 9
1 × 4 = 4 2 × 4 = 8 3 × 4 = 12 4 × 4 = 16
1 × 5 = 5 2 × 5 = 10 3 × 5 = 15 4 × 5 = 20 5 × 5 = 25
1 × 6 = 6 2 × 6 = 12 3 × 6 = 18 4 × 6 = 24 5 × 6 = 30 6 × 6 = 36
1 × 7 = 7 2 × 7 = 14 3 × 7 = 21 4 × 7 = 28 5 × 7 = 35 6 × 7 = 42 7 × 7 = 49
1 × 8 = 8 2 × 8 = 16 3 × 8 = 24 4 × 8 = 32 5 × 8 = 40 6 × 8 = 48 7 × 8 = 56 8 × 8 = 64
1 × 9 = 9 2 × 9 = 18 3 × 9 = 27 4 × 9 = 36 5 × 9 = 45 6 × 9 = 54 7 × 9 = 63 8 × 9 = 72 9 × 9 = 81

这样就用了不到300个中文字回答了如何使用Python编写九九乘法表。