输出99乘法表

line=1
while line<10:
    colume=1
    while colume<=line:
        sum=line*colume
        #三种输出方式
        #print('%d * %d = %d '%(colume,line,sum), end='\t')
        #print('{}*{}={}'.format(colume,line,sum),end='\t')
        print(colume,'*',line,'=',sum,end='\t')
        colume+=1
    print()
    line+=1