Python 2.4 and 2.6 improvements

The sets module is no longer needed with Python 2.4, and causes a
DeprecationWarning with 2.6, so drop it

The md5 module causes a DeprecationWarning with 2.6, so try to import
hashlib (its replacement) instead, else fall back

Reviewed by Poppy.

indra/lib/python/indra/base/lluuid.py

@@ -26,8 +26,14 @@ THE SOFTWARE.
 $/LicenseInfo$
 """
 
-import md5, random, socket, string, time, re
+import random, socket, string, time, re
 import uuid
+try:
+    # Python 2.6
+    from hashlib import md5
+except ImportError:
+    # Python 2.5 and earlier
+    from md5 import new as md5
 
 def _int2binstr(i,l):
     s=''
@@ -196,7 +202,7 @@ class UUID(object):
         from c++ implementation for portability reasons.
         Returns self.
         """
-        m = md5.new()
+        m = md5()
         m.update(uuid.uuid1().bytes)
         self._bits = m.digest()
         return self

scripts/install.py

@@ -64,7 +64,6 @@ def add_indra_lib_path():
 base_dir = add_indra_lib_path()
 
 import copy
-import md5
 import optparse
 import os
 import platform
@@ -75,7 +74,12 @@ import tempfile
 import urllib2
 import urlparse
 
-from sets import Set as set, ImmutableSet as frozenset
+try:
+    # Python 2.6
+    from hashlib import md5
+except ImportError:
+    # Python 2.5 and earlier
+    from md5 import new as md5
 
 from indra.base import llsd
 from indra.util import helpformatter
@@ -106,7 +110,7 @@ class InstallFile(object):
         return "ifile{%s:%s}" % (self.pkgname, self.url)
 
     def _is_md5sum_match(self):
-        hasher = md5.new(file(self.filename, 'rb').read())
+        hasher = md5(file(self.filename, 'rb').read())
         if hasher.hexdigest() == self.md5sum:
             return  True
         return False