How to create an empty list of dictionaries and populate afterwords?

I need to initialize an empty List of Dictionary(LOD) which must have the following keys in it. "id","name","age", "gender". I want to create a loop/nested loop that starts populating the LOD. For poppulating I have a list which has ID's and the rest of the keys are generated using the random function. The ID list looks like this: id = ['1','2','3']

The result must look something like this.

LOD = [
      {  
          'id': '1',
          'name':'122121',
          'age':'2131',
          'gender':'121' 

       },
       {  
          'id': '2',
          'name':'122121',
          'age':'2131',
          'gender':'121' 

       },
{  
          'id': '3',
          'name':'122121',
          'age':'2131',
          'gender':'121' 

       },
       ]