list of dictionaries python code example

Example 1: How are Python dictionaries different from Python lists?

list1 = ["a", "b" ,"c"] # a bunch of things 
dictionary1 = {"a":1, "b":2, "c":3} # like a list but each part of it has an associated extra bit

Example 2: how to use dictionaries in python

student_data = {
  "name":"inderpaal",
  "age":21,
  "course":['Bsc', 'Computer Science']
}

#the keys are the left hand side and the values are the right hand side
#to print data you do print(name_of_dictionary['key_name'])

print(student_data['name']) # will print 'inderpaal'
print(student_data['age']) # will print 21
print(student_data['course'])[0]
#this will print 'Bsc' since that field is an array and array[0] is 'Bsc'

Example 3: python list to dictionary

def to_dictionary(keys, values):
    return dict(zip(keys, values))
    
keys = ["a", "b", "c"]    
values = [2, 3, 4]
print(to_dictionary(keys, values)) 		# {'a': 2, 'c': 4, 'b': 3}

Example 4: python list of dictionaries

new_player1 = { 'firstName': 'LaMarcus', 'lastName': 'Aldridge', 'jersey': '12', 'heightMeters': '2.11', 'nbaDebutYear': '2006', 'weightKilograms': '117.9'}
            new_player2 = { 'firstName': 'LeBron', 'lastName': 'James', 'jersey': '2', 'heightMeters': '2.03', 'nbaDebutYear': '2003', 'weightKilograms': '113.4' }
            new_player3 = { 'firstName': 'Kawhi', 'lastName': 'Leonard', 'jersey': '2', 'heightMeters': '2.01', 'nbaDebutYear': '2011', 'weightKilograms': '104.3' }  
  
  nba_players = []
  nba_players.append(player)
  nba_players.append(new_player1)
  nba_players.append(new_player2)
  nba_players.append(new_player3)

Example 5: python list of dictionaries to list

[d['value'] for d in l]

Example 6: python list of dictionaries to list

[d['value'] for d in l if 'value' in d]