#%s打印99乘法表
for i in range(1,10):
for j in range(1,i+1):
print("%s*%s=%s" %(j,i,j*i),end=" ")
print("\n")
#format打印九九乘法表
for i in range(1,10):
for j in range(1,i+1):
print("{0}*{1}={2}".format(j,i,j*i),end=" ")
print("\n")
#f-string方式
for i in range(1,10):
for j in range(1,i+1):
print(f"{j}*{i}={j*i}", end=" ")
print("\n")