python - python连接字典中的键和值

Question

我有一本与此相似的字典：

mydic = {'key1':['va1','va2'], 'key2':['vb1','vb2']}

我想打印出这些文件路径，例如

/path/to/dir/key1/dir2/va1
/path/to/dir/key1/dir2/va2
/path/to/dir/key2/dir2/vb1
/path/to/dir/key3/dir2/vb2

我努力了，

for k, v in mydic.iteritems():
    print "/path/to/dir/k/dir2/v"

但这一个打印v为列表。我怎样才能实现上述目标？谢谢...

Answer 1

您可以使用os.path.join()，如下所示：

import os

mydic = {'key1':['va1','va2'], 'key2':['vb1','vb2']}


BASE_DIR = os.path.join('path', 'to', 'dir')
ADD_DIR = 'dir2'
for k, v in mydic.iteritems():
    for item in v:
        print os.path.join(BASE_DIR, k, ADD_DIR, item)

印刷：

/path/to/dir/key2/dir2/vb1
/path/to/dir/key2/dir2/vb2
/path/to/dir/key1/dir2/va1
/path/to/dir/key1/dir2/va2