Ci updates

.github/workflows/ci.yml

@@ -47,14 +47,6 @@ jobs:
             os: ubuntu-18.04
             python-version: 2.7
             tox-env: gmpy2py27
-          - name: py3.3
-            os: ubuntu-18.04
-            python-version: 3.3
-            tox-env: py33
-          - name: py3.4
-            os: ubuntu-18.04
-            python-version: 3.4
-            tox-env: py34
           - name: py3.5
             os: ubuntu-18.04
             python-version: 3.5

README.md

@@ -45,7 +45,7 @@ curves over prime fields.
 ## Dependencies
 
 This library uses only Python and the 'six' package. It is compatible with
-Python 2.6, 2.7, and 3.3+. It also supports execution on alternative
+Python 2.6, 2.7, and 3.5+. It also supports execution on alternative
 implementations like pypy and pypy3.
 
 If `gmpy2` or `gmpy` is installed, they will be used for faster arithmetic.

setup.py

@@ -27,15 +27,13 @@
     package_dir={"": "src"},
     license="MIT",
     cmdclass=commands,
-    python_requires=">=2.6, !=3.0.*, !=3.1.*, !=3.2.*",
+    python_requires=">=2.6, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*",
     classifiers=[
         "Programming Language :: Python",
         "Programming Language :: Python :: 2",
         "Programming Language :: Python :: 2.6",
         "Programming Language :: Python :: 2.7",
         "Programming Language :: Python :: 3",
-        "Programming Language :: Python :: 3.3",
-        "Programming Language :: Python :: 3.4",
         "Programming Language :: Python :: 3.5",
         "Programming Language :: Python :: 3.6",
         "Programming Language :: Python :: 3.7",

src/ecdsa/_compat.py

@@ -91,28 +91,13 @@ def int_to_bytes(val, length=None, byteorder="big"):
         raise ValueError("Only 'big' or 'little' endian supported")
 
 else:
-    if sys.version_info < (3, 4):  # pragma: no branch
-        # on python 3.3 hmac.hmac.update() accepts only bytes, on newer
-        # versions it does accept memoryview() also
-        def hmac_compat(data):
-            if not isinstance(data, bytes):  # pragma: no branch
-                return bytes(data)
-            return data
-
-        def normalise_bytes(buffer_object):
-            """Cast the input into array of bytes."""
-            if not buffer_object:
-                return b""
-            return memoryview(buffer_object).cast("B")
 
-    else:
-
-        def hmac_compat(data):
-            return data
+    def hmac_compat(data):
+        return data
 
-        def normalise_bytes(buffer_object):
-            """Cast the input into array of bytes."""
-            return memoryview(buffer_object).cast("B")
+    def normalise_bytes(buffer_object):
+        """Cast the input into array of bytes."""
+        return memoryview(buffer_object).cast("B")
 
     def compat26_str(val):
         return val

tox.ini

@@ -1,18 +1,13 @@
 
 [tox]
-envlist = py26, py27, py33, py34, py35, py36, py37, py38, py39, py310, py311, py, pypy, pypy3, gmpy2py27, gmpy2py39, gmpy2py310, gmpypy27, gmpypy39, gmpypy310, codechecks
+envlist = py26, py27, py35, py36, py37, py38, py39, py310, py311, py, pypy, pypy3, gmpy2py27, gmpy2py39, gmpy2py310, gmpypy27, gmpypy39, gmpypy310, codechecks
 
 [testenv]
 deps =
-     py{33}: py<1.5
-     py{33}: pytest<3.3
-     py{33}: enum34
-     py{33}: hypothesis<3.44
      py{26}: unittest2
      py{26}: hypothesis<3
-     py{34}: attrs<21
-     py{26,27,34,35,36,37,38,39,310,311,py,py3}: pytest
-     py{27,34,35,36,37,38,39,310,311,py,py3}: hypothesis
+     py{26,27,35,36,37,38,39,310,311,py,py3}: pytest
+     py{27,35,36,37,38,39,310,311,py,py3}: hypothesis
      gmpy2py{27,39,310,311}: gmpy2
      gmpypy{27,39,310,311}: gmpy
      gmpy{2py27,2py39,2py310,2py311,py27,py39,py310,py311}: pytest
@@ -31,7 +26,6 @@ deps =
      py27_old_gmpy2: hypothesis
      py: pytest
      py: hypothesis
-     py{33}: wheel<0.30
      coverage
 commands = coverage run --branch -m pytest {posargs:src/ecdsa}