while实现图形打印的练习

while打印矩形

实现代码

# *_*coding:utf-8 *_*
# author:yuhuashang
x = 1
y = 1
while y <= 10:
    while x <= 10:
        print("*", end="")
        x += 1
    x = 1
    y+= 1
    print("\n")

while打印九九乘法表

实现代码

# *_*coding:utf-8 *_*
# author:yuhuashang
x = 1

while x <= 9:
    y = 1
    while y <= x:
        print("%d*%d=%d\t"%(y, x, x*y), end="")
        y += 1
    x += 1
    print("\n")

打印倒等边三角形

实现代码

# *_*coding:utf-8 *_*
# author:yuhuashang

num = int(input("请输入行号："))

a = 0
while a < num:

    b = 0
    while b < a:
        print(" ", end="")
        b += 1

    c = num - a
    while c > 0:
        print("* ", end="")
        c -= 1

    print("\n")
    a += 1

来源：https://my.oschina.net/u/3193075/blog/3108516