An array is a data structure that allows you to store multiple values of the same data type in a single variable. Each value in an array is called an , and each element is accessed by its - a numeric value that represents its position in the array. A one-dimensional array is the simplest form of an array, also known as a vector. It consists of a single row or a single column of elements, which can be accessed and manipulated using their indices.
To loop through a Python list, you can use various types of loops, such as the for loop. For example, using a for loop allows you to iterate through each element in the list by generating a sequence of indices or directly iterating through the elements. The first method uses the range function combined with the length of the list, while the second method directly iterates over the list items. Both methods achieve the same result: printing each of the list.
You can also search for the index of an item in a list using the index() method. If the item is found, the method returns the index of the first occurrence of the item, otherwise, you can handle the case of not finding the item. Additionally, you can add items to a list using methods like append, insert, and extend. The append method adds an item to the end of the list, the insert method adds an item at a specific , and extend allows you to append elements from another iterable to the end of the list.
Removing items from a list can be done with the remove and pop methods. The remove method removes the first occurrence of a specific , while the pop method removes and returns the item at a specific index. Understanding these operations is vital for effectively manipulating one-dimensional arrays in programming.
