1 files changed, 5 insertions, 9 deletions
diff --git a/dedup/hashing.py b/dedup/hashing.py
index c91fb64..21f14ea 100644
--- a/dedup/hashing.py
+++ b/dedup/hashing.py
@@ -1,10 +1,6 @@
 import itertools
-try:
-    from itertools import imap as map
-except ImportError:
-    pass # in python3 map is already imap
 
-class HashBlacklist(object):
+class HashBlacklist:
     """Turn a hashlib-like object into a hash that returns None for some
     blacklisted hashes instead of the real hash value.
 
@@ -35,7 +31,7 @@ class HashBlacklist(object):
     def copy(self):
         return HashBlacklist(self.hashobj.copy(), self.blacklist)
 
-class HashBlacklistContent(object):
+class HashBlacklistContent:
     """Turn a hashlib-like object into a hash that returns None for some
     blacklisted content instead of the real hash value. Unlike HashBlacklist,
     not the output of the hash is considered, but its input."""
@@ -85,7 +81,7 @@ class HashBlacklistContent(object):
         new.stored = self.stored
         return new
 
-class DecompressedHash(object):
+class DecompressedHash:
     """Apply a decompression function before the hash. This class provides the
     hashlib interface (update, hexdigest, copy) excluding digest and name."""
     def __init__(self, decompressor, hashobj):
@@ -119,7 +115,7 @@ class DecompressedHash(object):
     def copy(self):
         return DecompressedHash(self.decompressor.copy(), self.hashobj.copy())
 
-class SuppressingHash(object):
+class SuppressingHash:
     """A hash that silences exceptions from the update and hexdigest methods of
     a hashlib-like object. If an exception has occurred, hexdigest always
     returns None."""
@@ -167,7 +163,7 @@ def hash_file(hashobj, filelike, blocksize=65536):
         data = filelike.read(blocksize)
     return hashobj
 
-class HashedStream(object):
+class HashedStream:
     """A file-like object, that supports sequential reading and hashes the
     contents on the fly."""
     def __init__(self, filelike, hashobj):