python怎么改变文本格式，如正文中的这样文本，,转换为text=[[＂L

text=[["Lenard",61],["ken",47],["Steven",25]]num=20for i in text:    k,y=map(str,i)    print k+'-'*(num-len(k)-len(y))+y

d = [['Lenard', 61], ['ken', 47], ['Steven', 25]]for i,j in d:    print('{0:-<30}{1}'.format(i,j))

out:

Lenard------------------------61ken---------------------------47Steven------------------------25