What is Python?
Python programming language is a general-purpose language that is commonly used for server-side programming, machine learning, application testing, and as "glue code" to connect various components. Python is an interpreted and object-oriented language with dynamic binding, dynamic binding, and built-in garbage collection. Python works on most operating systems, including Windows, Linux, and macOS. Python is easy to maintain, and Python code is easy to learn. Python has built-in modules for handling JSON, strings, HTTP requests, and XML right out of the box.
What is the List in Python?
Python lists are data structures that contain an unordered list of elements. Lists can contain elements of various types, such as integers, floats, strings, classes, and even other lists. A Python list is mutable, which means that it can be changed by adding or removing elements or by sorting. The list size is not fixed and changes every time you add or remove items to/from the list.
Python List Index Method Syntax
Following is the syntax of list.index() method:
- element: the element to search
- start (optional): the index to start searching
- end (optional): the index to complete the search
The following is an example of finding the index of an element in a Python list:
How to find an element in a list using the "in" operator?
To check if an element exists in a list, you can use the "in" operator in Python. The in operator will return True if the element exists in the list; otherwise, it will return False.
Following is the syntax for using the in operator to check if an element is in a list.
- element: the element to be found in the list
- list: the list in which the element will be searched
Unlike the list.index() method, the "in" operator does not return the element's index and does not throw an exception.