Off topic:How to create multidimensional dictionary in python?

Question

[Santiansiye]

Hi All,

The input data is as below:

chr1    a   3   6
chr1    b   4   5
chr1    a   2   5
chr1    c   4   5
chr2    d   5   6
chr2    d   2   3
chr2    c   4   7
chr3    e   6   7

How can I get dicts like the following?

dict1:

 {'chr1': {'a': '3-6,2-5', 'b': '4-5', 'c': '4-5'}, 'chr2': {'d': '5-6,2-3', 'c': '4-7'}, 'chr3': {'e': '6-7'}}

dict2:

{'chr1': {'a': ['3-6','2-5'], 'b': ['4-5'], 'c': ['4-5']}, 'chr2': {'d': ['5-6','2-3'], 'c': ['4-7']}, 'chr3': {'e': ['6-7']}}

Thanks