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Answered
Gary Christan
Asked: 2022-03-01T05:07:06+00:00

Converting a python list into a dictionary while specifying certain elements as keys and values

I have the below list called My_list and want to convert it to a dictionary called My_dict.

My_list=['I=113','PLAN=1','A=0PDFGB','B=23FGC','C=26TGFGD','D=19TGE','E=18TGA',
         'I=120','PLAN=2','A=0PDFGB','B=23FGC','C=26TGFGD','D=19TGE','E=18TGA']

the output should be as below:

My_dict={'I=113': ['PLAN=1', 'A=0PDFGB', 'B=23FGC', 'C=26TGFGD','D=19TGE', 'E=18TGA'],
         'I=120': ['PLAN=2', 'A=0PDFGB', 'B=23FGC',' C=26TGFGD','D=19TGE','E=18TGA']}

As you see, I want to make the strings starting with I= become my dictionary’s keys and the ones between two strings that start with I= to be my first keys values and so on.

I’ll appreciate your guidance on this matter.

dictionarylistpython
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1 Answer

  1. Best Answer

    We could use a loop:

    out = {}
for item in My_list:
    if item.startswith('I'):
        out[item] = []
        current = item
    else:
        out[current].append(item)

    Output:

    {'I=113': ['PLAN=1', 'A=0PDFGB', 'B=23FGC', 'C=26TGFGD', 'D=19TGE', 'E=18TGA'],
 'I=120': ['PLAN=2', 'A=0PDFGB', 'B=23FGC', 'C=26TGFGD', 'D=19TGE', 'E=18TGA']}
    • 0

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