lib: cleanup around use of the random and hash libraries

kallithea/lib/auth.py

@@ -33,7 +33,6 b' import hashlib'
 import itertools
 import collections
 
-from tempfile import _RandomNameSequence
 from decorator import decorator
 
 from pylons import url, request

kallithea/lib/helpers.py

@@ -17,7 +17,6 b' Helper functions'
 Consists of functions to typically be used within templates, but also
 available to Controllers. This module is available to both as 'h'.
 """
-import random
 import hashlib
 import StringIO
 import math
@@ -30,7 +29,7 b' from pygments.formatters.html import Htm'
 from pygments import highlight as code_highlight
 from pylons import url
 from pylons.i18n.translation import _, ungettext
-from hashlib import md5
+from hashlib import md5 # used as h.md5
 
 from webhelpers.html import literal, HTML, escape
 from webhelpers.html.tools import *
@@ -130,7 +129,7 b' def FID(raw_id, path):'
     :param path:
     """
 
-    return 'C-%s-%s' % (short_id(raw_id), md5(safe_str(path)).hexdigest()[:12])
+    return 'C-%s-%s' % (short_id(raw_id), hashlib.md5(safe_str(path)).hexdigest()[:12])
 
 
 class _GetError(object):