Adding py_ecc module and mypy changes

* Adding common types module
* Adding mypy correction from tox

py_ecc/bn128/bn128_field_elements.py

@@ -2,6 +2,7 @@
 
 import sys
 from typing import NewType, Tuple
+from py_ecc.types import Point2D, Point3D
 
 sys.setrecursionlimit(10000)
 
@@ -12,9 +13,6 @@
 else:
     int_types = (int,)
 
-Point2D = Tuple[int, int]
-Point3D = Tuple[int, int, int]
-
 # The prime modulus of the field
 field_modulus = 21888242871839275222246405745257275088696311157297823662689037894645226208583
 # See, it's prime!

py_ecc/secp256k1/secp256k1.py

@@ -2,6 +2,7 @@
 import hmac
 import sys
 from typing import NewType, Tuple, Union
+from py_ecc.types import Point2D, Point3D
 
 if sys.version_info.major == 2:
     safe_ord = ord
@@ -12,9 +13,6 @@ def safe_ord(value):
         else:
             return ord(value)
 
-Point2D = Tuple[int, int]
-Point3D = Tuple[int, int, int]
-
 # Elliptic curve parameters (secp256k1)
 P = 2**256 - 2**32 - 977
 N = 115792089237316195423570985008687907852837564279074904382605163141518161494337

py_ecc/types.py

@@ -0,0 +1,5 @@
+# Represents common DRY module to avoid repetition
+from typing import Tuple
+
+Point2D = Tuple[int, int]
+Point3D = Tuple[int, int, int]

tox.ini

@@ -28,4 +28,4 @@ basepython=python
 extras=lint
 commands=
     flake8 {toxinidir}/py_ecc
-    mypy --follow-imports=silent --warn-unused-ignores --ignore-missing-imports --no-strict-optional --check-untyped-defs --disallow-incomplete-defs --disallow-untyped-defs --disallow-any-generics -p p2p -p py_ecc
+    mypy --follow-imports=silent --warn-unused-ignores --ignore-missing-imports --no-strict-optional --check-untyped-defs --disallow-incomplete-defs --disallow-untyped-defs --disallow-any-generics -p py_ecc