Write a function called from_list(data_list) that takes a list of items as a parameter. The function should return a Node that contains the first element from the list and is linked to a chain of Nodes containing all the other elements. If the data list is empty, return None.

Note: an implementation of the Node class is given – you do not need to provide your own. You will have the following methods available: Node(), get_next(), set_next(), get_data(), set_data(), and str()

For example:

data = ['A', 'chain', 'of', 'Nodes']
head = from_list(data)
print(head)
print(type(head))
print(type(head.get_next()))

A -> chain -> of -> Nodes -> None

data = []
head = from_list(data)
print(head)
print(type(head))

None

the class is

class Node:
def __init__(self, data, next_node=None):
self.__data = data
self.__next = next_node

def get_data(self):
return self.__data

def set_data(self, data):
self.__data = data

def get_next(self):
return self.__next

def set_next(self, new_next):
self.__next = new_next
def __str__(self):
current = self.__data
return current + ” -> ” + str(self.__next)

please explain carefully, thanks