python中的循环嵌套 python循环嵌套输出图形

[Python]嵌套循环nested loop-练习题答案，作为新手，我也是写了好多次，错了写写了错，慢慢开始有点明白。。。

前一篇：[Python] For 嵌套循环打印图形 nested loop-练习题

 

【python的for循环嵌套打印如下图形】

 

图形一：

输出结果：

*******
*******
*******
*******

 

Python3.6代码：

for i in range(0,4):
    for j in range(0,7):
        print("*",end="")
    print()

 

 

图形二：

输出结果：

*
***
*****
*******

 

Python3.6代码：

for i in range(1,8,2):
    for j in range(i):
        print("*",end="")
    print()

 

 

图形三：

输出结果：

*
***
*****
*******
*****
***
*

 

Python3.6代码：

for i in range(1,8,2):
    for j in range(i):
        print("*",end="")
    print()

for i in range(5,0,-2):   
    for j in range(i):
        print("*",end="")
    print()

 

  

图形四：

输出结果：

*
  ***
 *****
*******

 

Python3.6代码：

for i in range(1,8,2):
    print(int((7-i)/2)*" ",end="")
    for j in range(i):
        print("*",end="")
    print()

或者：

for i in range(1,8,2):
    for j in range(int((7-i)/2)):
        print(" ",end="")
    for j in range(i):
        print("*",end="")
    print()

 

 

图形五：

输出结果：

*
  ***
 *****
*******
 *****
  ***
   *

 

Python3.6代码：

for i in range(1,8,2):
    print(int((7-i)/2)*" ",end="")
    for j in range(i):
        print("*",end="")
    print()

for i in range(5,0,-2):
    print(int((7-i)/2)*" ",end="")
    for j in range(i):
        print("*",end="")
    print()

 或者：

for i in range(1,8,2):
    for j in range(int((7-i)/2)):
        print(" ",end="")
    for j in range(i):
        print("*",end="")
    print()

for i in range(5,0,-2):
    for j in range(int((7-i)/2)):
        print(" ",end="")
    for j in range(i):
        print("*",end="")
    print()

 

 

 

【python的for循环嵌套打印如下九九乘法表】

输出结果：

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

 

Python3.6代码：

for i in range(1,10):
    for j in range(1,i+1):
        print(i,"*",j,"=",i * j,end="  ")
    print()

 

图形X：

 

代码： 

for line in range(0,3):
    for star in range(line):
        print(".",end="")
    print("O",end="")
    for star in range(5-2*line):
        print(".",end="")
    print("O",end="")
    for star in range(line):
        print(".",end="")

    print()
    
for line in range(1,2):
    for star in range(3):
        print(".",end="")
    print("O",end="")
    for star in range(3):
        print(".",end="")        

    print()

for line in range(2,-1,-1):
    for star in range(line):
        print(".",end="")
    print("O",end="")
    for star in range(5-2*line):
        print(".",end="")
    print("O",end="")
    for star in range(line):
        print(".",end="")
        
    print()

 

 

如果代码可以改进，有劳指出，非常感谢~