Remove python2 compatibility code

requests_http_message_signatures/__init__.py

-from __future__ import absolute_import, division, print_function, unicode_literals
-
 import base64, hashlib, hmac, time
 import email.utils
 
 import requests
-from requests.compat import urlparse
+from urllib.parse import urlparse
 from requests.exceptions import RequestException
 
 
-class RequestsHttpSignatureException(RequestException):
+class RequestsHttpMessageSignaturesException(RequestException):
     """An error occurred while constructing the HTTP Signature for your request."""
 
 
@@ -103,7 +101,7 @@ class HTTPSignatureAuth(requests.auth.AuthBase):
 
     def add_digest(self, request):
         if request.body is None and "digest" in self.headers:
-            raise RequestsHttpSignatureException(
+            raise RequestsHttpMessageSignaturesException(
                 "Could not compute digest header for request without a body"
             )
         if request.body is not None and "Digest" not in request.headers:
@@ -202,7 +200,7 @@ class HTTPSignatureAuth(requests.auth.AuthBase):
         elif scheme == "Signature":
             assert "Signature" in request.headers, "No Signature header found"
         else:
-            raise RequestsHttpSignatureException(
+            raise RequestsHttpMessageSignaturesException(
                 'Unknown signature scheme "{}"'.format(scheme)
             )
 

test/test.py

@@ -13,10 +13,10 @@ sys.path.insert(
     0, os.path.abspath(os.path.join(os.path.dirname(__file__), ".."))
 )  # noqa
 
-from requests_http_signature import (
+from requests_http_message_signatures import (
     HTTPSignatureAuth,
     HTTPSignatureHeaderAuth,
-    RequestsHttpSignatureException,
+    RequestsHttpMessageSignaturesException,
 )
 
 hmac_secret = b"monorail_cat"
@@ -77,7 +77,7 @@ class TestRequestsHTTPSignature(unittest.TestCase):
                 url, auth=HTTPSignatureAuth(key=hmac_secret[::-1], key_id="sekret")
             )
         with self.assertRaisesRegex(
-            RequestsHttpSignatureException,
+            RequestsHttpMessageSignaturesException,
             "Could not compute digest header for request without a body",
         ):
             self.session.get(