Init pypy support

Dockerfile-dev

@@ -1,5 +1,5 @@
 ARG python_version=3.6
-FROM python:${python_version}
+FROM pypy:${python_version}
 LABEL maintainer "devs@bigchaindb.com"
 
 RUN apt-get update \

bigchaindb/common/crypto.py

@@ -5,7 +5,11 @@
 # Separate all crypto code so that we can easily test several implementations
 from collections import namedtuple
 
-import sha3
+try:
+    from hashlib import sha3_256
+except ImportError:
+    from sha3 import sha3_256
+
 from cryptoconditions import crypto
 
 
@@ -14,7 +18,7 @@ CryptoKeypair = namedtuple('CryptoKeypair', ('private_key', 'public_key'))
 
 def hash_data(data):
     """Hash the provided data using SHA3-256"""
-    return sha3.sha3_256(data.encode()).hexdigest()
+    return sha3_256(data.encode()).hexdigest()
 
 
 def generate_key_pair():

bigchaindb/common/transaction.py

@@ -19,6 +19,9 @@ import base58
 from cryptoconditions import Fulfillment, ThresholdSha256, Ed25519Sha256
 from cryptoconditions.exceptions import (
     ParsingError, ASN1DecodeError, ASN1EncodeError, UnsupportedTypeError)
+try:
+    from hashlib import sha3_256
+except ImportError:
     from sha3 import sha3_256
 
 from bigchaindb.common.crypto import PrivateKey, hash_data

setup.py

@@ -74,7 +74,7 @@ tests_require = [
 install_requires = [
     # TODO Consider not installing the db drivers, or putting them in extras.
     'pymongo~=3.6',
-    'pysha3~=1.0.2',
+    # 'pysha3~=1.0.2', # @PYPY: not compability with PyPy, replaced with native hashlib
     'cryptoconditions==0.8.0',
     'python-rapidjson~=0.6.0',
     'logstats~=0.2.1',

tests/common/test_transaction.py

@@ -11,6 +11,9 @@ from copy import deepcopy
 from base58 import b58encode, b58decode
 from cryptoconditions import Ed25519Sha256
 from pytest import mark, raises
+try:
+    from hashlib import sha3_256
+except ImportError:
     from sha3 import sha3_256
 
 pytestmark = mark.bdb

tests/validation/test_transaction_structure.py

@@ -9,6 +9,9 @@ structural / schematic issues are caught when reading a transaction
 import json
 
 import pytest
+try:
+    import hashlib as sha3
+except ImportError:
     import sha3
 from unittest.mock import MagicMock
 

tests/web/test_transactions.py

@@ -8,6 +8,9 @@ from unittest.mock import Mock, patch
 import base58
 import pytest
 from cryptoconditions import Ed25519Sha256
+try:
+    from hashlib import sha3_256
+except ImportError:
     from sha3 import sha3_256
 
 from bigchaindb.common import crypto