Remove more py2 code

src/nacl/bindings/crypto_core_ristretto255.py

@@ -12,8 +12,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from __future__ import absolute_import, division, print_function
-
 from nacl import exceptions as exc
 from nacl._sodium import ffi, lib
 from nacl.exceptions import ensure

src/nacl/bindings/crypto_scalarmult_ristretto255.py

@@ -12,8 +12,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from __future__ import absolute_import, division, print_function
-
 from nacl import exceptions as exc
 from nacl._sodium import ffi, lib
 from nacl.exceptions import ensure

src/nacl/ristretto.py

@@ -12,16 +12,14 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from __future__ import absolute_import, division, print_function
-
 from fractions import Fraction
 
 import nacl.bindings
 from nacl import exceptions as exc
 from nacl.utils import random
 
 
-class Ristretto255Scalar(object):
+class Ristretto255Scalar:
     SIZE = nacl.bindings.crypto_core_ristretto255_SCALAR_BYTES
     NONREDUCED_SIZE = (
         nacl.bindings.crypto_core_ristretto255_NONREDUCED_SCALAR_BYTES
@@ -191,7 +189,7 @@ def __str__(self):
     )
 
 
-class Ristretto255Point(object):
+class Ristretto255Point:
     SIZE = nacl.bindings.crypto_core_ristretto255_BYTES
     HASH_SIZE = nacl.bindings.crypto_core_ristretto255_HASH_BYTES
     ORDER = nacl.bindings.crypto_core_ristretto255_GROUP_ORDER

tests/test_ristretto.py

@@ -12,8 +12,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from __future__ import absolute_import, division, print_function
-
 import json
 import os
 from fractions import Fraction
@@ -57,7 +55,7 @@ def _ristretto255_vectors():
     }
 
 
-class TestRistretto255Scalar(object):
+class TestRistretto255Scalar:
     order = 7237005577332262213973186563042994240857116359379907606001950938285454250989
     order_bytes = bytes.fromhex(
         "edd3f55c1a631258d69cf7a2def9de1400000000000000000000000000000010"
@@ -367,7 +365,7 @@ def test_str(self):
         assert text == "Ristretto255Scalar(123)"
 
 
-class TestRistretto255Point(object):
+class TestRistretto255Point:
     _vectors = _ristretto255_vectors()
     _base = bytes.fromhex(
         "e2f2ae0a6abc4e71a884a961c500515f58e30b6aa582dd8db6a65945e08d2d76"
@@ -385,7 +383,7 @@ def test_small_multiples(self, idx, encoding):
         base = Ristretto255Point(self._base)
         point = Ristretto255Point.ZERO
 
-        for i in range(idx):
+        for __ in range(idx):
             point += base
 
         assert bytes(point) == encoding
@@ -612,7 +610,7 @@ def test_library_error(self):
             p * 2
 
 
-class TestElGamal(object):
+class TestElGamal:
     """
     ElGamal encryption.
     """
@@ -661,7 +659,7 @@ def test_el_gamal(self):
         assert orig_msg == decr_msg
 
 
-class TestShamir(object):
+class TestShamir:
     """
     Shamir's Secret Sharing
     """