I need some help figuring out how to write the code, and maybe some explanation of the coding language thank you.

# Complete the function below. # # w1 and w2 are strings. You can assume that w1 and w2 have the same length # # SPECIFICATION # The function returns True if w2 is obtained from w1 by replacing one character # in w1 by another character; otherwise the function returns False. # # Note: The replacement character may be identical to the character being replaced. # # EXAMPLES # isSubstituted("Hello", "cello") returns True # isSubstituted("Hello", "cells") returns False # isSubstituted("Hello", "hello") returns True # isSubstituted("Hello", "belto") returns False # isSubstituted("Hello", "Hello") returns True # ###################################################################### def isSubstituted(w1, w2): # ADD CODE HERE to implement the following algorithm # Algorithm: Walk down both strings w1 and w2 and count the number of indices # at which w1 and w2 have distinct characters. If this count <= 1, then the function # should return True; otherwise False

###################################################################### # Complete the function below. # # w1 and w2 are strings. You can assume that either len(w2) == len(w1) or # len(w2) == len(w1) + 1 or len(w2) == len(w1) - 1. # # SPECIFICATION # The function returns True if w2 is obtained from w1 by (i) replacing one character # in w1 by another character or (ii) inserting a charecter into w1 or (iii) deleting # a charecter from w1; otherwise the function returns False. # # Note: The replacement character may be identical to the character being replaced. # # EXAMPLES # # isClose("hello", "hell") returns True # isClose("hello", "cello") returns True # isClose("hello", "Hello") returns True # isClose("hello", "Helloo") returns False # isClose("hello", "helloo") returns True # isClose("test", "rest") returns True # isClose("", "x") returns True # isClose("x", "") returns True # isClose("bell", "belt") returns True # isClose("boll", "ball") returns True # isClose("boll", "bales") returns False # ###################################################################### def isClose(w1, w2): # ADD CODE HERE. You will need to check the lengths of w1 and w2 and # call isInserted and isSubstituted