Simplify Your Python Code with Powerful Dictionary Techniques
Beginner #10: Explore dictionary creation, key-value manipulation, and advanced techniques like comprehension
Table of Contents
• Introduction
• How Dictionaries Differ from Lists and Tuples
• Creating Dictionaries
▹ Creating an Empty Dictionary
▹ Dictionary with String Keys and Numeric Values
▹ Dictionary with Mixed Key Types
▹ Dictionary with Various Value Types
• Accessing Dictionary
▹ Using Keys
▹ Using the .get() Method
▹ When to Use .get() vs []
• Adding key-value
▹ Adding Key-Value Pairs to a Dictionary
▹ Adding Multiple Key-Value Pairs
▹ Example: Adding Key-Value Pairs Conditionally
• Modifying Value
▹ Modifying Values in a Dictionary
▹ Modifying Values Based on a Condition
▹ Using a Loop to Modify Values
• Removing Item
▹ The .pop() Method
▹ The del Statement
▹ The .popitem() Method
• Commonly Built-In Methods
▹ The .keys() Method
▹ The .values() Method
▹ The .items() Method
▹ Practical Example: Using These Methods Together
• Nesting Dictionaries
▹ Example: Storing Information About Multiple Students
▹ Iterating Over Nested Dictionaries
▹ Adding and Updating Nested Dictionary Entries
• Dictionaries in if Statements
▹ Example 1: Checking if a Key Exists
▹ Example 2: Using the .get() Method to Avoid…
