7. Lists - Part B - Data Structures and Algorithms in Python
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7. Lists - Part B

7. Lists - Part B

The chapter explores the concept of lists in Python, emphasizing their mutable nature and the importance of understanding how assignments affect list behavior. Key operations such as slicing and concatenation are introduced, alongside explanations of equality and reference checking using '==' and 'is'. The chapter concludes by reiterating the distinction between mutable and immutable types in Python, highlighting the implications for variable assignments and data manipulation.

16 sections

Sections

Navigate through the learning materials and practice exercises.

  1. 7.1
    List Copying And Slicing

    This section discusses how to create copies of lists in Python using slicing...

  2. 7.1.1
    Introduction To List Slicing

    This section introduces list slicing in Python, illustrating how slices...

  3. 7.1.2
    Full Slice Operation

    The full slice operation in Python allows for creating a new copy of a list,...

  4. 7.1.3
    Effects Of Slice On List Assignment

    This section outlines how list slicing in Python creates new lists, allowing...

  5. 7.2
    Understanding Equality In Python Lists

    This section discusses how list assignment in Python works, particularly...

  6. 7.2.1
    Different Types Of Equality

    This section introduces the concepts of equality in Python, particularly...

  7. 7.2.2
    Using 'is' And '==' For Comparison

    This section explores the difference between comparing objects using 'is'...

  8. 7.2.3
    Simulating Equality Checks In The Interpreter

    This section explores how Python handles list copying and equality checks,...

  9. 7.3
    List Operations

    This section covers the operations of list manipulation in Python, including...

  10. 7.3.1
    Concatenation Of Lists Using '+' Operator

    This section covers the concept of concatenating lists in Python using the...

  11. 7.3.2
    Decoupling Lists With The '+' Operator

    This section explains how to create independent copies of lists using...

  12. 7.4

    The conclusion discusses how to properly copy lists in Python and the...

  13. 7.4.1
    Summary Of List Characteristics

    This section explains the characteristics of lists in Python, including how...

  14. 7.4.2
    Mutable Vs Immutable Values

    This section explores the differences between mutable and immutable values...

  15. 7.4.3
    Copying Lists Properly

    This section discusses the concept of copying lists in Python, emphasizing...

  16. 7.4.4
    Equality Operators In Python

    This section covers the distinction between equality (==) and identity (is)...

What we have learnt

  • Lists in Python are mutable sequences of values.
  • Slicing a list creates a new list that is a copy of the original.
  • The equality operator (==) checks for value equality, whereas the 'is' operator checks if two variables refer to the same object in memory.

Key Concepts

-- List
A list is a sequence of values that can contain elements of various data types, including integers, strings, and other lists.
-- Mutable vs Immutable
Mutable objects, like lists, can be changed in place, while immutable objects cannot be altered once created.
-- Slicing
Slicing refers to the creation of a new list from an existing one by specifying a start and end position.
-- Equality Operators
'==' checks if two values are equal, while 'is' checks if two variables point to the same memory location.

Additional Learning Materials

Supplementary resources to enhance your learning experience.