Python：使用现有有序字典中的键创建一个空的字典问题

Question

PSet 6 DNA from CS50.

I have CSV file with header and values:

name,AGATC,TTTTTTCT,AATG,TCTAG,GATA,TATC,GAAA,TCTG
Albus,15,49,38,5,14,44,14,12

And I have txt file with DNA sequence:

AAGGTAAGTTTAGAATATAAAAGGTGAGTTAAATAGAATAGGTTAAAATTAAAGGAGATCAGATCAGATCAGATCTATCTATCTATCTATCTATCAGAAAAGAGTAAATAGTTAAAGAGTAAGATATTGAATTAATGGAAAATATTGTTGGGGAAAGGAGGGATAGAAGG

I can make an ordered dictionary from this data:

OrderedDict([('name', 'Alice'), ('AGATC', '2'), ('AATG', '8'), ('TATC', '3')])

For text sequence I want to make an empty dictionary with the keys of the one made from CSV file.

    newdict = dict.fromkeys(reader.keys(),[]) - doesn`t work - the dictionary is ordered. 

Is it possible to make a new dictionary from the ordered (and how to do it if possible?) or "ordinary" dictionary would be better?

Answer 1

With Python 3.7. Is the below what you are looking for?:

dna_file
name,AGATC,TTTTTTCT,AATG,TCTAG,GATA,TATC,GAAA,TCTG
Albus,15,49,38,5,14,44,14,12

with open('/home/aklaver/dna.csv', newline=None) as dna_file:  
    header_line = dna_file.readline().rstrip().split(",")
header_line                                                                                                                                                               
['name', 'AGATC', 'TTTTTTCT', 'AATG', 'TCTAG', 'GATA', 'TATC', 'GAAA', 'TCTG']

dna_dict = dict.fromkeys(header_line, [])
dna_dict                                                                                                                                                                  
{'name': [],
 'AGATC': [],
 'TTTTTTCT': [],
 'AATG': [],
 'TCTAG': [],
 'GATA': [],
 'TATC': [],
 'GAAA': [],
 'TCTG': []}