List of List to Key-Value Pairs

Question

I have a string which is semicolon delimited and then space delimited:

'gene_id EFNB2; Gene_type cDNA_supported; transcript_id EFNB2.aAug10; product_id EFNB2.aAug10;'

I want to create a dictionary in one line by splitting based on the delimiters but so far I can only get to a list of lists:

filter(None,[x.split() for x in atts.split(';')])

Which gives me:

[['gene_id', 'EFNB2'], ['Gene_type', 'cDNA_supported'], ['transcript_id', 'EFNB2.aAug10'], ['product_id', 'EFNB2.aAug10']]

When what I want is:

{'gene_id': 'EFNB2', 'Gene_type': 'cDNA_supported', 'transcript_id': 'EFNB2.aAug10', 'product_id': 'EFNB2.aAug10'}

I have tried:

filter(None,{k:v for k,v in x.split() for x in atts.split(';')})

but it gives me nothing. Anybody know how to accomplish this?

Answer 1

You are very close now, you can just call dict on your list of lists:

>>> lst = [['gene_id', 'EFNB2'], ['Gene_type', 'cDNA_supported'], ['transcript_id', 'EFNB2.aAug10'], ['product_id', 'EFNB2.aAug10']]
>>> dict(lst)
{'Gene_type': 'cDNA_supported',
 'gene_id': 'EFNB2',
 'product_id': 'EFNB2.aAug10',
 'transcript_id': 'EFNB2.aAug10'}