Update recursive.py

Description of code.

recursive.py

@@ -1,8 +1,8 @@
 def reverse_word(x):
-    if len(x) == 1:
+    if len(x) == 1: # If the input word reversed is the same, then input will be printed out as the result.
         return x 
     else:
-        return reverse_word(x[1: ]) + x[0]
+        return reverse_word(x[1: ]) + x[0] # Puts the 0 index of the string at the last index, minus the 0th index the remaining letters will be reveresed.
 
 x = input("Enter a word to reverse: ")
 answer = reverse_word(x)