Python ljust rjust center输出

print '|','*'.ljust(10),'|'
print '|','*'.ljust(10,'-'),'|'
print '|','*'.rjust(10,'-'),'|'
print '|','*'.center(10,'-'),'|'


for a in range(1, 6):
print 'a = '.ljust(5), repr(a).ljust(10), 'b = '.ljust(5), repr(a * 2)