蟒蛇連接鍵和值從字典

Question

我有一本字典，看起來與此類似：

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

我想打印文件路徑這些，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 

我都試過了，

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

但是這樣一來打印出v爲列表。我如何實現上述目標？謝謝...

Answer 1

您可以使用os.path.join()，像這樣：

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) 

打印：

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