Sets

► Understanding Sets Sets are unordered collections of unique elements. They automatically remove duplicates and are perfect for membership testing, removing duplicates, and mathematical set operations. ► Real-World Analogy Think of sets like a bag of unique marbles:» If you try to add a marble that’s already in the bag, nothing happens» You can’t have

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Dictionaries and Maps

► Understanding Dictionaries Dictionaries store data in key-value pairs, allowing fast lookup by key. They’re like real-world dictionaries where you look up a word (key) to find its definition (value). ► Real-World Analogy Think of dictionaries like a phone book:» Each name (key) maps to a phone number (value)» You search by name to quickly

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Tuples

► Understanding Tuples Tuples are immutable sequences in Python, similar to lists but cannot be modified after creation. They’re used to store related data that shouldn’t change, like coordinates or database records. ► Real-World Analogy Think of tuples like a sealed envelope with documents:» Once you seal the envelope (create tuple), you can’t change what’s

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Strings in Programming

► Understanding Strings Strings are sequences of characters used to represent text in programming. They’re one of the most commonly used data types, essential for handling any text-based information like names, messages, or user input. ► Real-World Analogy Think of strings like a sentence in a book:» Each character is like a letter on the

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Arrays and Lists

► Understanding Arrays and Lists Lists (also called arrays in other languages) are ordered collections that can store multiple items in a single variable. Lists are mutable, meaning you can modify their contents after creation. They’re one of the most versatile and commonly used data structures in programming. ► Real-World Analogy Think of a list

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Lambda Functions

► Understanding Lambda Functions Lambda functions are small, anonymous functions defined in a single line. They can have any number of parameters but only one expression. Lambda functions are useful for short, simple operations that you need temporarily. ► Real-World Analogy Think of lambda functions like sticky notes with quick instructions:» A full function is

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Recursion

► Understanding Recursion Recursion is a programming technique where a function calls itself to solve a problem by breaking it down into smaller, similar subproblems. Each recursive call works on a simpler version of the original problem until reaching a base case. ► Real-World Analogy Think of recursion like Russian nesting dolls (Matryoshka):» You open

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