python-while循环，for ,以及字符串格式化

1.字符串格式化

name="suwukong"

print("欢迎",name,"光临")
print("欢迎 "+name+" 光临")
print("欢迎 %s 光临" %name)
print(f"欢迎 {name} 光临")

2.用while 打印三角形

i =

while i<=:

    j=

    while j<=i:

        print("*",end="")

        j=j+

    print("")

    i=i+

2.九九乘法表

a =

while a <= :

    b =

    while b <= a:

        print("%s * %s = %s\t "%(b,a,a*b),end="")

        b = b +

    print("")

    a = a +

3.打印矩形

j =

while j<=:

    k=

    while k<=:

        print("*",end="")

        k=k+

    print("")

    j=j+

巴特西