Python question,I am trying to use a singleton design for this program. Please ignore the first 7 lines of code. I need to know how to implement a singleton design into the program after the first 7 lines. any help would be great, thanks!

Adef singleton (cls) instance[None] def wrapper (*args, **kwargs): if instance [0] is None: instance [0]cls (args, **kwargs) return instanceI0] return wrapper filename-input ('Enter the input file name:') #Open the input file inputFileopen (filename, "r+") #De fine the dictionary. list i) #Read and split the file using for loop for word in inputFile.read.split): #check the word to be or not in file. if word not in list: list [word] 1 Adef singleton (cls) instance[None] def wrapper (*args, **kwargs): if instance [0] is None: instance [0]cls (args, **kwargs) return instanceI0] return wrapper filename-input ('Enter the input file name:') #Open the input file inputFileopen (filename, "r+") #De fine the dictionary. list i) #Read and split the file using for loop for word in inputFile.read.split): #check the word to be or not in file. if word not in list: list [word] 1