Python Dictionaries

clear()

• Removes all the elements from the dictionary

  car = {
    "brand": "Mercedes",
    "model": "AMG",
    "year": 2001
  }
  car.clear()
  print(car)
  

copy()

• Returns a copy of the dictionary

  car = {
      "brand": "Mercedes",
      "model": "AMG",
      "year": 2001
  }
  x = car.copy()
  print(x)
  

fromkeys()

• Returns a dictionary with the specified keys and value

  x = ('car', 'company', 'fruit')
  y = 'apple'
  thisdict = dict.fromkeys(x,y)
  print(thisdict)
  

get()

• Returns the value of the specified key

  car = {
    "brand": "Mercedes",
    "model": "AMG",
    "year": 2001
  }
  x = car.get("model")
  print(x)
  

items()

• Returns a list containing a tuple for each key value pair

  car = {
    "brand": "Mercedes",
    "model": "AMG",
    "year": 2001
  }
  x = car.items()
  print(x)
  

keys()

• Returns a list containing the dictionary’s keys

  car = {
    "brand": "Mercedes",
    "model": "AMG",
    "year": 2001
  }
  x = car.keys()
  print(x)
  

pop()

• Removes the element with the specified key

  car = {
    "brand": "Mercedes",
    "model": "AMG",
    "year": 2001
  }
  car.pop("model")
  print(car)
  

popitem()

• Removes the last inserted key-value pair

  car = {
    "brand": "Mercedes",
    "model": "AMG",
    "year": 2001
  }
  car.popitem()
  print(car)
  

setdefault()

• Returns the value of the specified key. If the key does not exist: insert the key, with the specified value

  car = {
    "brand": "Mercedes",
    "model": "AMG",
    "year": 2001
  }
  x = car.setdefault("model", "CLS")
  print(x)
  

update()

• Updates the dictionary with the specified key-value pairs

car = {
    "brand": "Mercedes",
    "model": "AMG",
    "year": 2001
}
car.update({"color": "Black"})
print(car)

values()

• Returns a list of all the values in the dictionary

car = {
    "brand": "Mercedes",
    "model": "AMG",
    "year": 2001
}
x = car.values()
print(x)