python循环语法，9*9乘法表

'''while'''
i = 0
while i < 10:
    i += 1
    j = 0
    while j < 10:
        j += 1
        print('{}*{}={}'.format(j, i, i * j), end='  ')
        if j >= i:
            print('
')
            break
'''for方法一'''
for i in range(1,10):
    for j in range(1,10):
        print('{}*{}={}'.format(j,i,i*j),end='  ')
        if j >= i:
            print('')
            break
'''for方法二'''
for i in range(1,10):
    for w in range(1,10):
        print(f'{w}*{i}={i*w}',end=' ')
        if w >= i:
            print('')
            break
'''for方法三'''

for i in range(1,10):
    for j in range(1,i+1):
        print('{}X{}={} '.format(j,i,i*j), end='  ')
    print()