Python - Dictionary

Python dictionary stores data in key/value pairs.

my_dict = {
  'name': 'Felipe',
  'followers': 1337,
  'website': 'https://izolipe.com'
}

Access Dictionary Values

To access a dictionary value, use the key inside square brackets ['key'].

book = {
  name = "The Biography of Globglogabgalab",
  pages = 667
}

print(book['name']) # The Biography of Globglogabgalab
print(book['pages']) # 667

Add/Edit Dictionary Values

To add/edit a dictionary value, you have two options:

• dict['key'] = value - add/edit values using a key/value.
• update(iterable) - update dictionary using a iterable.

player = {}
player['nick'] = 'Xx007SlayerxX'
player['life'] = 52
player.update({ 'max_life': 100, 'items': [ 'sword', 'shield', 'apple' ] })

Remove Dictionary Values

To remove a dictionary value, you have two options:

• pop(key) - remove the item by key.
• del dict['key'] - remove the item by key using del keyword.

item = {
  'id': 32,
  'name': 'The Elixir of Chemicals',
  'effect': '+ Intelligence'
}

item.pop('effect')
del item['name']

Dictionary Length

To obtain the length of a dictionary use len(x).

pikachu = {
    "name": "Pikachu",
    "type": "Electric",
    "height": "0.4 m",
    "weight": "6.0 kg",
    "abilities": ["Static", "Lightning Rod (hidden ability)"]
}

print(len(pikachu)) # 5