diff --git a/lib/core/common.py b/lib/core/common.py
index 346712894..ecafa0087 100644
--- a/lib/core/common.py
+++ b/lib/core/common.py
@@ -2265,8 +2265,8 @@ def average(values):
     """
     Computes the arithmetic mean of a list of numbers.
 
-    >>> round(average([0.9, 0.9, 0.9, 1.0, 0.8, 0.9]), 1)
-    0.9
+    >>> "%.1f" % average([0.9, 0.9, 0.9, 1.0, 0.8, 0.9])
+    '0.9'
     """
 
     return (1.0 * sum(values) / len(values)) if values else None
@@ -2278,8 +2278,8 @@ def stdev(values):
 
     # Reference: http://www.goldb.org/corestats.html
 
-    >>> round(stdev([0.9, 0.9, 0.9, 1.0, 0.8, 0.9]), 3)
-    0.063
+    >>> "%.3f" % stdev([0.9, 0.9, 0.9, 1.0, 0.8, 0.9])
+    '0.063'
     """
 
     if not values or len(values) < 2:
@@ -4701,10 +4701,7 @@ def prioritySortColumns(columns):
     def _(column):
         return column and "id" in column.lower()
 
-    if six.PY2:
-        return sorted(sorted(columns, key=len), lambda x, y: -1 if _(x) and not _(y) else 1 if not _(x) and _(y) else 0)
-    else:
-        return sorted(sorted(columns, key=len), key=functools.cmp_to_key(lambda x, y: -1 if _(x) and not _(y) else 1 if not _(x) and _(y) else 0))
+    return sorted(sorted(columns, key=len), key=functools.cmp_to_key(lambda x, y: -1 if _(x) and not _(y) else 1 if not _(x) and _(y) else 0))
 
 def getRequestHeader(request, name):
     """
diff --git a/lib/core/compat.py b/lib/core/compat.py
index d1403b302..f3fee9662 100644
--- a/lib/core/compat.py
+++ b/lib/core/compat.py
@@ -6,6 +6,7 @@ See the file 'LICENSE' for copying permission
 """
 
 import binascii
+import functools
 import math
 import os
 import random
@@ -201,6 +202,31 @@ def round(x, d=0):
     else:
         return float(math.ceil((x * p) - 0.5))/p
 
+def cmp_to_key(mycmp):
+    """Convert a cmp= function into a key= function"""
+    class K(object):
+        __slots__ = ['obj']
+        def __init__(self, obj, *args):
+            self.obj = obj
+        def __lt__(self, other):
+            return mycmp(self.obj, other.obj) < 0
+        def __gt__(self, other):
+            return mycmp(self.obj, other.obj) > 0
+        def __eq__(self, other):
+            return mycmp(self.obj, other.obj) == 0
+        def __le__(self, other):
+            return mycmp(self.obj, other.obj) <= 0
+        def __ge__(self, other):
+            return mycmp(self.obj, other.obj) >= 0
+        def __ne__(self, other):
+            return mycmp(self.obj, other.obj) != 0
+        def __hash__(self):
+            raise TypeError('hash not implemented')
+    return K
+
+# Note: patch for Python 2.6
+if not hasattr(functools, "cmp_to_key"):
+    functools.cmp_to_key = cmp_to_key
 
 if sys.version_info >= (3, 0):
     xrange = range
diff --git a/lib/core/settings.py b/lib/core/settings.py
index 15738386e..48f4ac011 100644
--- a/lib/core/settings.py
+++ b/lib/core/settings.py
@@ -18,7 +18,7 @@ from lib.core.enums import OS
 from thirdparty import six
 
 # sqlmap version (<major>.<minor>.<month>.<monthly commit>)
-VERSION = "1.3.5.68"
+VERSION = "1.3.5.69"
 TYPE = "dev" if VERSION.count('.') > 2 and VERSION.split('.')[-1] != '0' else "stable"
 TYPE_COLORS = {"dev": 33, "stable": 90, "pip": 34}
 VERSION_STRING = "sqlmap/%s#%s" % ('.'.join(VERSION.split('.')[:-1]) if VERSION.count('.') > 2 and VERSION.split('.')[-1] == '0' else VERSION, TYPE)
diff --git a/lib/utils/purge.py b/lib/utils/purge.py
index 2e1e521bd..15146fcff 100644
--- a/lib/utils/purge.py
+++ b/lib/utils/purge.py
@@ -68,10 +68,7 @@ def purge(directory):
         except:
             pass
 
-    if six.PY2:
-        dirpaths.sort(cmp=lambda x, y: y.count(os.path.sep) - x.count(os.path.sep))
-    else:
-        dirpaths.sort(key=functools.cmp_to_key(lambda x, y: y.count(os.path.sep) - x.count(os.path.sep)))
+    dirpaths.sort(key=functools.cmp_to_key(lambda x, y: y.count(os.path.sep) - x.count(os.path.sep)))
 
     logger.debug("renaming directory names to random values")
     for dirpath in dirpaths: