3A in Python language please: (3) find_median () #you have to determine the signatureDescription: Design and write a function called find_median() which determines the medianof an ordered list of values. If the list is empty, the median is None. Note that if necessary, themedian is half-way between two values. Round to the nearest hundredth, as needed. An emptylist has None for a median.Parameters: (read the description carefully)Return value: (read the description carefully)Assumptions: The values in the list are in increasing (ascending) order.Examples:find_median ([1, 3, 5, 16, 103]) → 5find_median ([22, 33, 44, 55, 66,771)→ 49.5find_median ([11.3, 44.44, 47.66, 47.66, 101, 908.21])→ 47.66find_median ([-53]) →-53 User Defined Functions and RecursionBackgroundThe purpose of this Programming is to practice writing function definitions, using functions inside ofother functions, and using recursion to solve complex problems.RestrictionsAny function that violates the following:• You are not allowed to import anything•You are not allowed to use the global keyword, nor should you have any global variables. (Inother words, do not create any variables outside of a function definition.You are not allowed to use slicing (except for the 5th function add_chars)•No built-in function except round(), range(), and len() is allowed• From list methods, you are allowed to use .append(), .insert(),.remove(), or del•From dictionary methods, you are allowed to use .keys(), .values(),.items()TestingIn addition to the examples in the tester file, you should also devise your own test cases for your code.Develop additional test cases, on your own, to make sure that you haven't missed anything (empty lists,different sized lists, etc) and your code is correct. The goal is to keep your focus on writing correct code.FunctionsIn this Programming, you will be writing and calling a handful of functions (five). From the description,you will generate the signature, and function body for each function. (The examples can give you hintsabout the signatures!)

The Python code is given below with code and output screenshot

(3) find_median () #you have to determine the signature Description: Design and write a function called find_median () which determines the median of an ordered list of values. If the list is empty, the median is None. Note that if necessary, the median is half-way between two values. Round to the nearest hundredth, as needed. An empty list has None for a median. Parameters: (read the description carefully) Return value: (read the description carefully) Assumptions: The values in the list are in increasing (ascending) order. Examples: find_median ([1, 3, 5, 16, 1031) 5 find_median ([22, 33, 44, 55, 66, 771) find median ([11.3, 44.44, 47.66, 47.66, find_median ([-53]) -53 49.5 101, 908.21]) → 47.66