A group of related variables with the same data type is referred to as an array . Variables in an array are stored in consecutive locations in the computer’s internal memory. Each variable in an array has the same name and data type.
You distinguish one variable in a one-dimensional array from another variable in the same array by using a unique integer, called a subscript. A subscript indicates a variable’s position in the array and is assigned by the computer when the array is created. The first variable in a one-dimensional array is assigned a subscript of 0, the second a subscript of 1, and so on.
You can use the for in loop to loop through all the elements of an array.
Python has a set of built-in methods that you can use on lists/arrays.
| Method | Description |
|---|---|
| append() | Adds an element at the end of the list |
| clear() | Removes all the elements from the list |
| copy() | Returns a copy of the list |
| count() | Returns the number of elements with the specified value/td> |
| extend() | Add the elements of a list (or any iterable), to the end of the current list |
| index() | Returns the index of the first element with the specified value |
| insert() | Adds an element at the specified position |
| len() | returns the length of an array (the number of elements in an array). |
| pop() | Removes the element at the specified position |
| remove() | Removes the first item with the specified value |
| reverse() | Reverses the order of the list |
| sort() | Sorts the list |