I have a list like this:

[{'migs_ba': 'O',
  'migs_eu': 'O',
  'migs_org': 'O',
  'migs_pl': 'O',
  'migs_vi': 'O',
  'mimag': 'EM',
  'mimarks_c': 'O',
  'mimarks_s': 'EM',
  'mims': 'EM',
  'misag': 'EM',
  'miuvig': 'EM'},
 {'migs_ba': 'O',
  'migs_eu': 'O',
  'migs_org': 'O',
  'migs_pl': 'O',
  'migs_vi': 'O',
  'mimag': 'EM',
  'mimarks_c': 'O',
  'mimarks_s': 'EM',
  'mims': 'EM',
  'misag': 'EM',
  'miuvig': 'EM'}...
]

I would like to tabulate all of the strings that appear as values of any key in that list of dicts, like this

{"O": 12, "EM": 10}

CodePudding user response：

this should work considering you name your list "elements"

from collections import Counter

counter = Counter([val for ele in elements for val in ele.values()])
print(counter)

output

Counter({'O': 12, 'EM': 10})

Note the counter inherits from dict, and has all methods and behaviour of it

CodePudding user response：

logic

for every value in all the dictionaries in the list, test if value is 'O' or 'EM'

result={
    'EM':0,
    'O':0,
}
for dict_ in lolo:
    for value in dict_.values():
        if value == 'EM':
            result['EM']  = 1
        else: 
            result['O']  = 1

or to make more generic:

for dict_ in lolo:
    for value in dict_.values():
        if result.get(value):
            result[value]  = 1
        else:
            result[value] = 1

input

lolo = [{'migs_ba': 'O',
         'migs_eu': 'O',
         'migs_org': 'O',
         'migs_pl': 'O',
         'migs_vi': 'O',
         'mimag': 'EM',
         'mimarks_c': 'O',
         'mimarks_s': 'EM',
         'mims': 'EM',
         'misag': 'EM',
         'miuvig': 'EM'},
        {'migs_ba': 'O',
         'migs_eu': 'O',
         'migs_org': 'O',
         'migs_pl': 'O',
         'migs_vi': 'O',
         'mimag': 'EM',
         'mimarks_c': 'O',
         'mimarks_s': 'EM',
         'mims': 'EM',
         'misag': 'EM',
         'miuvig': 'EM'}
        ]
result = {
}

output

{'O': 12, 'EM': 10}