Python3 高级语法

1.  labels = list(map(lambda t: [label_dict[‘<start>‘]] + list(t), labels))

 1 labels = list(map(lambda t: [label_dict[‘<start>‘]] + list(t), labels))
 2
 3 # lambda t: [label_dict[‘<start>‘]]+list(t)
 4 def func(t, label_dict):
 5     return [label_dict[‘<start>‘]]+list(t)
 6 # labels = list(map(, labels))
 7 labels = [func(e, label_dict) for e in labels]
 8
 9 # list(map由于Python3的限定，不如列表推导，要少用。
10 # list(map(func, labels))=>[func(ele) for ele in labels]