Podcast
Questions and Answers
What is the key characteristic of an object in object-oriented programming?
What is the key characteristic of an object in object-oriented programming?
- It can only store integers
- It is based on a class and can receive messages (correct)
- It is a procedure for data processing
- It is solely a storage container for variables
In Python, every entity such as a list or function can be treated as an object.
In Python, every entity such as a list or function can be treated as an object.
True (A)
What method in the BankAccount class decreases the balance of the account?
What method in the BankAccount class decreases the balance of the account?
withdraw
Each bank account should not allow the balance to go below £______.
Each bank account should not allow the balance to go below £______.
Match the following OOP terms with their definitions:
Match the following OOP terms with their definitions:
What happens when a simple data type, such as an integer, is assigned to a new variable?
What happens when a simple data type, such as an integer, is assigned to a new variable?
When a mutable object is assigned to a new variable, both variables refer to different objects in memory.
When a mutable object is assigned to a new variable, both variables refer to different objects in memory.
What is the term for two variable names referencing the same object in memory?
What is the term for two variable names referencing the same object in memory?
The slice operation allows us to create a __________ of a mutable object.
The slice operation allows us to create a __________ of a mutable object.
Match the following terms with their definitions:
Match the following terms with their definitions:
What happens when you modify a mutable object that has been assigned to another variable?
What happens when you modify a mutable object that has been assigned to another variable?
Slicing creates two completely independent objects of a list.
Slicing creates two completely independent objects of a list.
Explain the effect of modifying an item in a list created via slicing.
Explain the effect of modifying an item in a list created via slicing.
What is the primary purpose of encapsulation in OOP?
What is the primary purpose of encapsulation in OOP?
Inheritance allows for circular references between classes.
Inheritance allows for circular references between classes.
What is polymorphism in the context of OOP?
What is polymorphism in the context of OOP?
Information hiding is achieved using __________ variables and setter/getter methods.
Information hiding is achieved using __________ variables and setter/getter methods.
Match the following terms with their definitions:
Match the following terms with their definitions:
Which method would you use to add multiple elements to a list in Python?
Which method would you use to add multiple elements to a list in Python?
A nested list can contain other data structures like dictionaries or tuples.
A nested list can contain other data structures like dictionaries or tuples.
How do you print a specific item from a nested list?
How do you print a specific item from a nested list?
What is the key difference between a shallow copy and an assignment?
What is the key difference between a shallow copy and an assignment?
The csv module in Python can only read data, not write it.
The csv module in Python can only read data, not write it.
What function is used to create a reader object for a csv file?
What function is used to create a reader object for a csv file?
To read data from a csv file, you first need to open the file using the function ______.
To read data from a csv file, you first need to open the file using the function ______.
What does each row read from the csv.reader object return?
What does each row read from the csv.reader object return?
Match the following csv module functions with their purpose:
Match the following csv module functions with their purpose:
What happens to the header when reading data from a csv file?
What happens to the header when reading data from a csv file?
When modifying revenues in projects read from a csv file, by how much is each project's revenue increased?
When modifying revenues in projects read from a csv file, by how much is each project's revenue increased?
What mode is used to open a CSV file for writing?
What mode is used to open a CSV file for writing?
Default arguments in a function cannot be mutable objects.
Default arguments in a function cannot be mutable objects.
When reading a CSV file, what is the first action taken with the revenue data?
When reading a CSV file, what is the first action taken with the revenue data?
The function range(4, 11, 2)
results in the sequence ________.
The function range(4, 11, 2)
results in the sequence ________.
Match the following function calls to their descriptions:
Match the following function calls to their descriptions:
What does the csv.writer(file_object)
function return?
What does the csv.writer(file_object)
function return?
A variable number of arguments allows a function to accept multiple values for a single parameter.
A variable number of arguments allows a function to accept multiple values for a single parameter.
What is the purpose of the writerow(row)
function?
What is the purpose of the writerow(row)
function?
Study Notes
Object-Oriented Programming (OOP)
- OOP is a programming paradigm where programs are built around classes and objects
- Objects are abstractions of data, which can receive messages, process data and send messages
- Classes define the structure of objects
- Methods are functions associated with a class
- Instances are objects of a specific class
- Attributes are variables or properties of a class or instance
Nested Lists
- Nested lists are lists containing other lists
- To iterate over nested lists, use nested loops
- To access specific items in a nested list, use indexing
append()
adds an item to the end of a listextend()
appends elements from an iterable to the end of a list
Deep vs Shallow Copy
- Shallow copy constructs a new object, but only copies references to existing mutable objects
- Deep copy creates a new object and copies all nested objects recursively
- Shallow copy can lead to unintended changes in original objects
CSV File Manipulation
- The
csv
module helps read and write data from/to CSV files csv.reader()
reads CSV files, returning each row as a list of stringscsv.writer()
writes data to a CSV file, taking a list as a row
Variable Number of Arguments in Functions
- Default arguments allow optional arguments with default values
- Functions can accept a variable number of arguments using
*args
and**kwargs
*args
collects positional arguments into a tuple**kwargs
collects keyword arguments into a dictionary
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Description
Test your knowledge on Object-Oriented Programming concepts, nested lists, and methods for manipulating data structures. This quiz covers key principles such as classes, objects, shallow and deep copying, as well as CSV file manipulation. Challenge yourself and see how well you understand these foundational programming topics.