How to convert this list into dictionary in Python?

Question

I have a list like this:

paths = [[\'test_data\', \'new_directory\', \'ok.txt\'], [\'test_data\', \'reads_1.fq\'], [\'test_data\', \'test_ref.fa\']]
<         


        

Answer 1

Yes it is possible, use collections.defaultdict:

>>> from collections import defaultdict
>>> dic = defaultdict(list)
>>> lis = [['test_data', 'new_directory', 'ok.txt'], ['test_data', 'reads_1.fq'], 
for item in lis:                                                                                           
    key = "/".join(item[:-1])
    dic[key].append(item[-1])
...     
>>> dic
defaultdict(,
{'test_data': ['reads_1.fq', 'test_ref.fa'],
 'test_data/new_directory': ['ok.txt']})

using simple dict:

>>> dic = {}
>>> for item in lis:
    key = "/".join(item[:-1])
    dic.setdefault(key, []).append(item[-1])
...     
>>> dic
{'test_data': ['reads_1.fq', 'test_ref.fa'],
 'test_data/new_directory': ['ok.txt']}