在四个方向上打印乘法口诀表

cfkj.py

for i in range(1, 10):

    for j in range(1, i + 1):

        print '%d*%d=%2d' % (i, j, i * j),

    print ''

print ''

for i in range(9, 0, -1):

    for j in range(1, i + 1):

        print '%d*%d=%2d' % (i, j, i * j),

    print ''

print ''

for i in range(1, 10):

    s = []

    for j in range(1, i + 1):

        s.append('%d*%d=%2d' % (i, j, i * j))

    print ' '.join(s).rjust(6 * 9 + 8)

print ''

for i in range(9, 0, -1):

    s = []

    for j in range(1, i + 1):

        s.append('%d*%d=%2d' % (i, j, i * j))

    print ' '.join(s).rjust(6 * 9 + 8)

print ''

# 1

for i in range(1, 10):

    print ' '.join(['%d*%d=%2d' % (i, j, i * j) for j in range(1, i + 1)]).rjust(0)

print ''

for i in range(9, 0, -1):

    print ' '.join(['%d*%d=%2d' % (i, j, i * j) for j in range(1, i + 1)]).rjust(0)

print ''

for i in range(1, 10):

    print ' '.join(['%d*%d=%2d' % (i, j, i * j) for j in range(1, i + 1)]).rjust(6 * 9 + 8)

print ''

for i in range(9, 0, -1):

    print ' '.join(['%d*%d=%2d' % (i, j, i * j) for j in range(1, i + 1)]).rjust(6 * 9 + 8)

print ''

# 2

import os

def cfkj(start, end, step, rjust):

    for i in range(start, end, step):

        print ' '.join(['%d*%d=%2d' % (i, j, i * j) for j in range(1, i + 1)]).rjust(rjust)

cfkj(1, 10, 1, 0)

cfkj(9, 0, -1, 0)

cfkj(1, 10, 1, 6 * 9 + 8)

cfkj(9, 0, -1, 6 * 9 + 8)

# 3

import os

def cfkj(start, end, step, rjust):

    print os.linesep.join([' '.join(['%d*%d=%2d' % (i, j, i * j) for j in range(1, i + 1)]).rjust(rjust) for i in range(start, end, step)])

cfkj(1, 10, 1, 0)

cfkj(9, 0, -1, 0)

cfkj(1, 10, 1, 6 * 9 + 8)

cfkj(9, 0, -1, 6 * 9 + 8)

# 4

print os.linesep.join([' '.join(['%d*%d=%2d' % (i, j, i * j) for j in range(1, i + 1)]).rjust(0) for i in range(1, 10)])

print os.linesep.join([' '.join(['%d*%d=%2d' % (i, j, i * j) for j in range(1, i + 1)]).rjust(0) for i in range(9, 0, -1)])

print os.linesep.join([' '.join(['%d*%d=%2d' % (i, j, i * j) for j in range(1, i + 1)]).rjust(6 * 9 + 8) for i in range(1, 10)])

print os.linesep.join([' '.join(['%d*%d=%2d' % (i, j, i * j) for j in range(1, i + 1)]).rjust(6 * 9 + 8) for i in range(9, 0, -1)])