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Questions and Answers
The statement '3 in [1, 2, 3]' evaluates to false.
The statement '3 in [1, 2, 3]' evaluates to false.
False
Elements in a list can be replaced in Python using the subscript operator.
Elements in a list can be replaced in Python using the subscript operator.
True
In Python, lists are immutable, meaning their contents cannot change after creation.
In Python, lists are immutable, meaning their contents cannot change after creation.
False
The method 'split' can be used to divide a sentence into a list of words.
The method 'split' can be used to divide a sentence into a list of words.
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Running the command 'example = 0' replaces the entire list with the value 0.
Running the command 'example = 0' replaces the entire list with the value 0.
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A list can maintain its identity while its content changes.
A list can maintain its identity while its content changes.
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The result of 'numbers = [2, 3, 4, 5]' followed by squaring each element gives '[4, 9, 16, 25]'.
The result of 'numbers = [2, 3, 4, 5]' followed by squaring each element gives '[4, 9, 16, 25]'.
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The operator 'in' is used solely for adding elements to a list.
The operator 'in' is used solely for adding elements to a list.
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The method L.append(element) adds the element at the beginning of the list.
The method L.append(element) adds the element at the beginning of the list.
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The insert method allows adding a new element at any index, but it inserts at the end if the index exceeds the current list length.
The insert method allows adding a new element at any index, but it inserts at the end if the index exceeds the current list length.
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The method L.extend(aList) inserts the elements of aList individually to the list L.
The method L.extend(aList) inserts the elements of aList individually to the list L.
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Lists in Python are mutable, which means their elements can be changed after the list is created.
Lists in Python are mutable, which means their elements can be changed after the list is created.
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L.pop(index) can remove and return the last element of the list without specifying an index.
L.pop(index) can remove and return the last element of the list without specifying an index.
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The example list after executing example.insert(1, 10) will display [1, 10, 2].
The example list after executing example.insert(1, 10) will display [1, 10, 2].
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Using L.insert(3, 25) on a list of length 2 will insert 25 at index 3 successfully.
Using L.insert(3, 25) on a list of length 2 will insert 25 at index 3 successfully.
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The method L.pop() can remove an element from any specified position in the list.
The method L.pop() can remove an element from any specified position in the list.
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The list created by the expression list(range(1, 5)) includes the value 5.
The list created by the expression list(range(1, 5)) includes the value 5.
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A list in Python can contain elements of different data types.
A list in Python can contain elements of different data types.
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Using the index notation first[2:4] will return the elements at index 2 and index 4 from the list 'first'.
Using the index notation first[2:4] will return the elements at index 2 and index 4 from the list 'first'.
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Lists in Python are immutable, meaning their content cannot be changed after creation.
Lists in Python are immutable, meaning their content cannot be changed after creation.
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The len() function returns the number of elements in a list.
The len() function returns the number of elements in a list.
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The concatenation of two lists in Python can be accomplished using the * operator.
The concatenation of two lists in Python can be accomplished using the * operator.
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The equality operator (==) can be used to check if two lists contain the same elements in the same order.
The equality operator (==) can be used to check if two lists contain the same elements in the same order.
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Using the expression ['apples', 'oranges', 'cherries'] creates a list with three elements.
Using the expression ['apples', 'oranges', 'cherries'] creates a list with three elements.
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Study Notes
Lists
- A list is a sequence of data values, also called items or elements.
- Each item in a list has a unique index that specifies its position, starting from 0.
- Lists are mutable, meaning their elements can be inserted, removed, or replaced.
List Literals
- Lists can include various data types like strings, integers, or even other lists, using square brackets
[ ]. - To create a list with values of an expression, include the expression within the list literal.
- The
range()function generates a sequence of integers suitable for creating lists. - The
list()function converts any iterable sequence, like a string, into a list.
List Methods
-
len()returns the number of elements in a list. -
[]is used to access elements by index. -
:is used to access a range of elements. -
+(concatenation) combines two lists into a new list. -
==(equality) compares two lists for identical content. -
inchecks if an element exists within the list. -
print()displays the contents of a list.
Replacing Elements
- The subscript operator
[]is used to replace an element at a specific index. - The
forloop can be used to iterate through a list, replacing each element with its square, or manipulating each word in a string by converting it to uppercase.
Inserting and Removing Elements
- The
append()method adds an element to the end of a list. - The
extend()method adds all elements of another list to the end of a list. - The
insert()method inserts an element at a specified index in a list. - The
pop()method removes and returns the element at the end or a specific index of the list.
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Description
This quiz covers the fundamentals of Python lists, including their properties, how to create them, and various built-in methods. You will learn about list literals, mutability, and functions like len(), list(), and range(). Test your understanding of these essential concepts in Python programming.
