Python for Kids: A fun and engaging introduction to programming concepts using Python by Praba Rajah

Author:Praba Rajah [Rajah, Praba]
Language: eng
Format: epub
Published: 2024-05-03T00:00:00+00:00

Here, we created a dictionary called character_info that stores information about a character. Each key ("name", "age", "special_ability") acts as a label for its corresponding value ("Alice", 10, "flying").

Accessing and Modifying Values:

We access values in a dictionary using their keys within square brackets. We can also modify existing values or add new key-value pairs:

Python

character_info[ "age" ] = 11 # Update age

character_info[ "hair_color" ] = "brown" # Add a new key-value pair

Common Dictionary Operations:

Dictionaries offer various methods to manage their contents:

Checking for keys: Use the in operator to check if a specific key exists in the dictionary.

Removing key-value pairs: Use the pop() method to remove a key-value pair and return its value.

Looping through dictionaries: Use a for loop to iterate over the keys or key-value pairs in the dictionary.

Python

if "hair_color" in character_info:

print( "Hair color:" , character_info[ "hair_color" ])

favorite_color = character_info.pop( "hair_color" ) # Remove hair_color and store its value

for key in character_info:

print(key, ":" , character_info[key])

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