row = 1
while row <= 9:
col = 1
while col <= row:
result = col * row
# print("*", end="")
print("%d * %d = %d " % (col, row, col*row), end="\t")
col += 1
# print("%d" % row)
print("")
row += 1
# 遍历：
for i in range(1, 10):
print()
for j in range(1, i+1):
print("%d * %d = %d" % (i, j, i*j), end="\t")
