8 Questions
What is the primary difference between a list and a tuple in Python?
A list is mutable and a tuple is immutable
What is the purpose of the def keyword in Python?
To define a function
What is the difference between a set and a list in Python?
A set is an unordered collection of unique items and a list is an ordered collection of items
What is the purpose of the lambda keyword in Python?
To create a small, anonymous function
What is the term for the ability of an object to take on multiple forms?
Polymorphism
What is the purpose of the self parameter in a class method?
To refer to the current object being manipulated
What is the term for the process of creating a new class based on an existing class?
Inheritance
What is the purpose of a __init__ method in a class?
To initialize an object with default values
Study Notes
Data Types
- Integers are whole numbers, such as 1, 2, and 3.
- Floats are decimal numbers, such as 3.14 and -0.5.
- Strings are sequences of characters, and can be enclosed in single quotes or double quotes, for example "hello" and 'hello'.
- Boolean data type has only two possible values: true or false.
- Lists are ordered collections of items, can be changed (mutable), and can contain different data types, such as [1, 2, 3] and ["a", "b", "c"].
- Tuples are ordered, immutable collections of items, for example (1, 2, 3) and ("a", "b", "c").
- Sets are unordered collections of unique items, such as {1, 2, 3} and {"a", "b", "c"}.
- Dictionaries are unordered collections of key-value pairs, for example {"name": "John", "age": 30}.
Functions
- Functions are defined using the
defkeyword, followed by the function name and parameters in parentheses. - Functions can take arguments, which are values passed to the function when it is called.
- Functions can return values, which can be used by the caller.
- Variables defined inside a function are local to that function and cannot be accessed outside of it.
- Lambda functions are small, anonymous functions that can be defined inline, for example
lambda x: x**2.
Object-oriented Programming
- Classes are blueprints for creating objects, and define their properties and behavior.
- Objects are instances of classes, and have their own set of attributes and methods.
- Attributes are data associated with an object, such as
person.name = "John". - Methods are functions associated with an object, such as
person.greet(). - Inheritance allows a class to inherit attributes and methods from a parent class.
- Polymorphism allows objects of different classes to be treated as if they were of the same class.
This quiz covers the basic data types used in programming, including integers, floats, strings, booleans, lists, and tuples. Test your understanding of these fundamental concepts.
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