diff --git a/Practical 2/q12_find_factors.py b/Practical 2/q12_find_factors.py
index 5a42489..b36ad6e 100644
--- a/Practical 2/q12_find_factors.py	
+++ b/Practical 2/q12_find_factors.py	
@@ -1,13 +1,13 @@
 # Finding the factors of an integer
 # by Yiyang 29/01/18
-
+# gisc: avoid single letter variables and underscore prefix _ in identifier names
 N = int(input())
 i = 2 # i is the factor & the iterator
 _first = True # for the printing format
 
 while (N >= i):
     if (N % i == 0):
-        N /= i
+        N /= i # use integer divisor // in Python 3
         if _first == True:
             print(i, end='')
             _first = False
@@ -16,4 +16,4 @@
     else:
         i += 1
 
-print('.')
\ No newline at end of file
+print('.')