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Accepted
Fernando Javier León
Asked: 2022-06-21 09:03:20 +0800 CST 2022-06-21 09:03:20 +0800 CST

How to remove lists with empty dictionaries from a dictionary? python

  • 772

I have a data like this in which I have a dictionary with lists that have dictionaries:

bloqueAtributos = {
   "Articulos":[
      {
         "id":3042,
         "titulo":"Propuesta de Investigación Socioeducativa de la UTPL",
         "keywords":"",
         "link_articulo":""
      },
      {
         "id":3043,
         "titulo":"Prueba",
         "keywords":"pruebas",
         "link_articulo":""
      },
      {
         "id":3044,
         "titulo":"Prueba",
         "keywords":"pruebas",
         "link_articulo":""
      }
   ],
   "Libros":[
      
   ],
   "Proyectos":[
      {
         "codigo_proyecto":""
      },
      {
         "codigo_proyecto":""
      }
   ],
   "GradoAcademico":[
      
   ],
   "Capacitacion":[
      {},
      {} 
   ]
}

And I'm trying to delete empty lists and lists with empty dictionaries, for which I do this:

bloquesInfoRestante = {k:v for k,v in bloqueAtributos.items() if v !=[] and v !=[{}]}
print(bloquesInfoRestante)

With that I can eliminate the lists that are empty. But not the lists that are found with more than one empty dictionary.

With what I have now it returns me this:

bloquesInfoRestante = {
   "Articulos":[
      {
         "id":3042,
         "titulo":"Propuesta de Investigación Socioeducativa de la UTPL",
         "keywords":"",
         "link_articulo":""
      },
      {
         "id":3043,
         "titulo":"Prueba",
         "keywords":"pruebas",
         "link_articulo":""
      },
      {
         "id":3044,
         "titulo":"Prueba",
         "keywords":"pruebas",
         "link_articulo":""
      }
   ],
   "Proyectos":[
      {
         "codigo_proyecto":""
      },
      {
         "codigo_proyecto":""
      }
   ],
   "Capacitacion":[
      {},
      {}
   ]
}

As you can see, it only eliminates the empty lists, but not the lists with empty dictionaries. My question is how can I remove the lists with empty dictionaries as well. I hope you can help me. Thanks in advance

python

1 Answers

  1. Best Answer

    You might consider filtering the list vwith [item for item in v if item != {}], so we guarantee that the list vhas at least one non-empty dictionary.

    bloquesInfoRestante = {k:v for k,v in bloqueAtributos.items() if [item for item in v if item != {}]}

    If there are dictionaries that have at least one non-empty dictionary like {'a': [{}, {'foo': 2}], 'b': [], 'c': [{}, {}]}, it bloquesInfoRestantewould be{'a': [{}, {'foo': 2}]}

    • 4