Note: When people say arrays in Python, more often than not, they are talking about Python lists. If that's the case, visit the Python list tutorial. Show
In this tutorial, we will focus on a module named Creating Python ArraysTo create an
array of numeric values, we need to import the
Output array('d', [1.1, 3.5, 4.5]) Here, we created an array of Commonly used type codes are listed as follows:
We will not discuss different C types in this article. We will use two type codes in this entire article: Note: The Accessing Python Array ElementsWe use indices to access elements of an array:
Output First element: 2 Second element: 4 Last element: 8 Note: The index starts from 0 (not 1) similar to lists. Slicing Python ArraysWe can access a range of items in an array by using the slicing operator
Output array('i', [62, 5, 42]) array('i', [2, 5, 62]) array('i', [52, 48, 5]) array('i', [2, 5, 62, 5, 42, 52, 48, 5]) Changing and Adding ElementsArrays are mutable; their elements can be changed in a similar way as lists.
Output array('i', [0, 2, 3, 5, 7, 10]) array('i', [0, 2, 4, 6, 8, 10]) We can add one item to the array using the
Output array('i', [1, 2, 3, 4]) array('i', [1, 2, 3, 4, 5, 6, 7]) We can also concatenate two arrays using
Output array('i', [1, 3, 5, 2, 4, 6]) Removing Python Array ElementsWe can delete one or more items from an array using Python's del statement.
Output array('i', [1, 2, 3, 4]) Traceback (most recent call last): File "<string>", line 9, in <module> print(number) # Error: array is not defined NameError: name 'number' is not defined We can use the
Output array('i', [10, 11, 12, 13]) 12 array('i', [10, 11, 13]) Check this page to learn more about Python array and array methods. Python Lists Vs ArraysIn Python, we can treat lists as arrays. However, we cannot constrain the type of elements stored in a list. For example:
If you create arrays using the
Output Traceback (most recent call last): File "<string>", line 3, in <module> a = arr.array('d', [1, 3.5, "Hello"]) TypeError: must be real number, not str When to use arrays?Lists are much more flexible than arrays. They can store elements of different data types including strings. And, if you need to do mathematical computation on arrays and matrices, you are much better off using something like NumPy. So, what are the uses of arrays created from the Python array module? The Unless you don't really need arrays (array module may be needed to interface with C code), the use of the array module is not recommended. How do you print an array element?public class PrintArray {. public static void main(String[] args) {. //Initialize array.. int [] arr = new int [] {1, 2, 3, 4, 5};. System.out.println("Elements of given array: ");. //Loop through the array by incrementing value of i.. for (int i = 0; i < arr.length; i++) {. System.out.print(arr[i] + " ");. How do you print an array element from a line in Python?When you wish to print the list elements in a single line with the spaces in between, you can make use of the "*" operator for the same. Using this operator, you can print all the elements of the list in a new separate line with spaces in between every element using sep attribute such as sep=”/n” or sep=”,”.
How do you print a specific element in a list Python?Without using loops: * symbol is use to print the list elements in a single line with space. To print all elements in new lines or separated by space use sep=”\n” or sep=”, ” respectively.
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