1 def multi99():
 2     result = ''
 3     for i in range(1, 10):
 4         for j in range(1, i + 1):
 5             separator = '\n' if j == i else '\t'
 6             result += '%d * %d = %-2d' % (j, i, i * j)
 7             result += separator
 8     return result
 9 
10 print(multi99())

1 print(''.join(['%d * %d = %-2d'%(y,x,x*y)+(lambda x,y:'\n' if x == y else '\t')(x,y) for x in range(1,10) for y in range(1,x+1)]))