dictionary functions python code example

Example 1: python dictionary methods

# PYTHON DICTIONARY METHODS
METHOD	      DESCRIPTION
clear()	      Removes all the elements from the dictionary
copy()	      Returns a copy of the dictionary
fromkeys()	  Returns a dictionary with the specified keys and value
get()	      Returns the value of the specified key
items()	      Returns a list containing a tuple for each key value pair
keys()	      Returns a list containing the dictionary's keys
pop()	      Removes the element with the specified key
popitem()	  Removes the last inserted key-value pair
setdefault()  Returns the value of the specified key. If the key does not exist: 
                insert the key, with the specified value
update()	  Updates the dictionary with the specified key-value pairs
values()	  Returns a list of all the values in the dictionary

Example 2: dictionary in python

# Dictionaries in Python

ages = {"John": 43, "Bob": 24, "Ruth": 76} # Marked by { at beginning and a } at end

# ^^^ Has sets of keys and values, like the 'John' and 43 set. These two values must be seperated by a colon

# ^^^ Sets of values seperated by commas.

Example 3: python dictionary functions

#Dictionary methods

clear() - Removes all the elements from the dictionary
copy() - Returns a copy of the dictionary
fromkeys() - Returns a dictionary with the specified keys and value
get() - Returns the value of the specified key
items() - Returns a list containing a tuple for each key value pair
keys() - Returns a list containing the dictionary's keys
pop() - Removes the element with the specified key
popitem() - Removes the last inserted key-value pair
setdefault() - Returns the value of the specified key. If the key does not exist: insert the key, with the specified value
update() - Updates the dictionary with the specified key-value pairs
values() - Returns a list of all the values in the dictionary

Example 4: python dictionary methods

dictionary methods