Python List length: How to Find a Length of List
A list in Python is used to store the sequence of various types of data. A list is defined as a collection of values or elements of different types. The elements in the list are separated with a comma[,] and surrounded with the square brackets [ ].
Python List length
To find the length of the list in Python, use the len[] method. The len[] is a built-in Python method that takes a total number of elements in the list and returns the length of a list.
The len[] method can be used with a list, tuple, arrays, dictionary, etc. The len[] method is one of the most used and convenient ways to find the length of a list in Python.
Syntax
len[list]Argument
The len[] function takes a list parameter in which the number of elements is counted. It returns the number of elements in the list.
Example
listA = ["Jeff", "Bezos", "Is", "Retiring", "from", "Amazon"] print["The length of the list is:", len[listA]]Output
The length of the list is: 6The len[] method works in O[1] time as a list is an object and has a member to store its size.
Is the len[] method specific to the list?
No, the len[] method is not specific to the list. In the len[] method, you may provide the object that can be a sequence [list, tuple, string, bytes, or range] or collections such as a dictionary.
Using the len[] function, you can get the length of the total number of elements in a set or frozenset.
How to Get Length of an Array in Python
To find a length of an array in Python, use the len[] method. To work with an array in Python, import the array module and then create an array using the array[] method with some elements, and then we will find the length of that array.
Output
Number of elements in an Array: 5That is it for this tutorial.
A list in Python is used to store the sequence of various types of data. A list is defined as a collection of values or elements of different types. The elements in the list are separated with a comma[,] and surrounded with the square brackets [ ].
Python List length
To find the length of the list in Python, use the len[] method. The len[] is a built-in Python method that takes a total number of elements in the list and returns the length of a list.
The len[] method can be used with a list, tuple, arrays, dictionary, etc. The len[] method is one of the most used and convenient ways to find the length of a list in Python.
Syntax
len[list]Argument
The len[] function takes a list parameter in which the number of elements is counted. It returns the number of elements in the list.
Example
listA = ["Jeff", "Bezos", "Is", "Retiring", "from", "Amazon"] print["The length of the list is:", len[listA]]Output
The length of the list is: 6The len[] method works in O[1] time as a list is an object and has a member to store its size.
Is the len[] method specific to the list?
No, the len[] method is not specific to the list. In the len[] method, you may provide the object that can be a sequence [list, tuple, string, bytes, or range] or collections such as a dictionary.
Using the len[] function, you can get the length of the total number of elements in a set or frozenset.
How to Get Length of an Array in Python
To find a length of an array in Python, use the len[] method. To work with an array in Python, import the array module and then create an array using the array[] method with some elements, and then we will find the length of that array.
from array import array arr_len = array['b',[11, 19, 21, 18, 46]] print["Number of elements in an Array:", len[arr_len]]Output
Number of elements in an Array: 5That is it for this tutorial.