for循环

for i in range(1,10):
    for j in range(i):
        j = j + 1
        print ("%d*%d=%-3d"% (i,j,i*j),end="")
    print ("")

while循环

i=1
while i<10:
    j=1
    while j<=i:
        print("%d*%d=%d\t"%(j,i,j*i),end="")
        j+=1
    print()
    i+=1

递归

def multiplication_table(n):
    if n < 1:
        return
    multiplication_table(n - 1)
    for m in range(1, n + 1):
        print("%d*%d=%d" % (m, n, m * n), end="\t")
    print()

multiplication_table(9)