Computer Programming: Python Module 4
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Questions and Answers

Which method allows you to get a subset of a list in Python?

  • Indexing
  • Dictionary method
  • Slicing (correct)
  • Tuple operation

    • What is a key characteristic of tuples in Python?

  • They are mutable.
  • They use curly braces for creation.
  • They support item assignment.
  • They are immutable. (correct)

    • How do you add a new key-value pair to a dictionary in Python?

  • Using the append() method
  • Using the insert() method
  • By assigning a value to a new key (correct)
  • By replacing an existing value

    • Which operation cannot be performed on sets in Python?

    <p>Accessing elements by index</p> Signup and view all the answers

    What describes the main use of list comprehensions in Python?

    <p>To create new lists from existing lists</p> Signup and view all the answers

    In Python, which method is NOT applicable to lists when performing operations such as searching or sorting?

    <p>copy()</p> Signup and view all the answers

    What is a key difference between lists and tuples in Python?

    <p>Lists can change size, while tuples have a fixed size once created.</p> Signup and view all the answers

    When accessing dictionary values, what is a significant advantage over lists?

    <p>Dictionaries provide key-based access to values.</p> Signup and view all the answers

    In Python, which operation is NOT typically associated with sets?

    <p>Slicing</p> Signup and view all the answers

    Which situation does NOT correctly utilize a list comprehension in Python?

    <p>Removing duplicate elements from a list.</p> Signup and view all the answers

    Study Notes

    Lists

    • Lists are ordered collections in Python that can hold items of different data types.
    • Key operations include creating lists, accessing elements, slicing, and using negative indices for indexing.
    • Essential methods include append(), extend(), insert(), remove(), pop(), and list comprehensions for creating new lists from existing lists.

    Tuples

    • Tuples are similar to lists but are immutable, meaning they cannot be changed after creation.
    • They can be created using parentheses (), and elements can be accessed through indexing and slicing.
    • Operations on tuples generally include concatenation, repetition, and membership testing.

    Dictionary

    • Dictionaries are collections of key-value pairs, providing fast lookups and retrieval via keys.
    • Methods include creating dictionaries, adding new entries, modifying existing ones, and removing items.
    • Operations typically involve checking for keys, iterating through keys and values, and utilizing get() for safe retrieval.

    Sets

    • Sets are unordered collections that hold unique elements, created using curly braces {} or the set() function.
    • Key operations include adding elements, removing elements, and performing mathematical set operations like union, intersection, and difference.
    • Sets are useful for eliminating duplicates and membership testing.

    Lists

    • Lists are ordered collections in Python that can hold items of different data types.
    • Key operations include creating lists, accessing elements, slicing, and using negative indices for indexing.
    • Essential methods include append(), extend(), insert(), remove(), pop(), and list comprehensions for creating new lists from existing lists.

    Tuples

    • Tuples are similar to lists but are immutable, meaning they cannot be changed after creation.
    • They can be created using parentheses (), and elements can be accessed through indexing and slicing.
    • Operations on tuples generally include concatenation, repetition, and membership testing.

    Dictionary

    • Dictionaries are collections of key-value pairs, providing fast lookups and retrieval via keys.
    • Methods include creating dictionaries, adding new entries, modifying existing ones, and removing items.
    • Operations typically involve checking for keys, iterating through keys and values, and utilizing get() for safe retrieval.

    Sets

    • Sets are unordered collections that hold unique elements, created using curly braces {} or the set() function.
    • Key operations include adding elements, removing elements, and performing mathematical set operations like union, intersection, and difference.
    • Sets are useful for eliminating duplicates and membership testing.

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    Related Documents

    Module 4_Collections_Dr. Ayub.pdf

    Description

    This quiz covers Module 4 of the Computer Programming course, focusing on collections in Python. Topics include lists, tuples, dictionaries, and sets, along with their creation, indexing, and various operations. Test your knowledge and understanding of these essential data structures in Python programming.

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