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Questions and Answers
Which of the following correctly describes a list in Python?
Which of the following correctly describes a list in Python?
- A list is a dynamic sequence of values with elements of any type, stored within parentheses and separated by semicolons.
- A list is a fixed sequence of values with elements of any type, stored within curly braces and separated by colons.
- A list is a mutable sequence of values with elements of any type, stored within square brackets and separated by commas. (correct)
- A list is an immutable sequence of values with elements of the same data type, stored within square brackets and separated by commas.
How can a programmer create an empty list object in Python?
How can a programmer create an empty list object in Python?
- Using the tuple class constructor
- Using the dictionary class constructor
- Using the set class constructor
- Using the list class constructor (correct)
What is the correct way to access elements of a list in Python?
What is the correct way to access elements of a list in Python?
- Using the index[] operator (correct)
- Using the at symbol operator
- Using the dot operator
- Using the arrow operator
Which of the following statements about lists in Python is true?
Which of the following statements about lists in Python is true?
What is the characteristic of a list that makes it dynamic in nature?
What is the characteristic of a list that makes it dynamic in nature?
Which of the following is true about a list in Python?
Which of the following is true about a list in Python?
How can an empty list object be created in Python?
How can an empty list object be created in Python?
What is the nature of a list in Python?
What is the nature of a list in Python?
How are elements accessed in a list in Python?
How are elements accessed in a list in Python?
What is the syntax for creating a list in Python?
What is the syntax for creating a list in Python?
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Study Notes
Lists in Python
- A list in Python is a collection of items that can be of any data type, including strings, integers, floats, and other lists.
- To create an empty list object in Python, a programmer can use empty square brackets
[]or thelist()function.
Creating Lists
- A list can be created by enclosing a series of values in square brackets
[], separated by commas. - The syntax for creating a list is
my_list = [item1, item2, ..., itemN].
Accessing Elements
- Elements of a list can be accessed using their index, which starts at 0 for the first element.
- The syntax for accessing an element is
my_list[index].
Dynamic Nature
- A list in Python is dynamic in nature, meaning its size can be changed after creation.
- This is because lists are mutable, and elements can be added or removed using various methods.
Properties
- A list in Python is an ordered collection, meaning the order of elements matters.
- Lists are also indexable, meaning each element can be accessed using its index.
- Lists are mutable, meaning their contents can be modified after creation.
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