removed support for python 3.5 and added 3.8

.travis.yml

@@ -3,9 +3,9 @@
 language: python
 
 python:
-  - "3.5"
   - "3.6"
   - "3.7"
+  - "3.8"
 
 env:
   - DJANGO_VERSION=django-22

django_cryptolock/utils.py

@@ -11,9 +11,7 @@ def verify_signature(address: str, challenge: str, signature: str) -> bool:
     host = settings.MONERO_WALLET_RPC_HOST
     user = settings.MONERO_WALLET_RPC_USER
     pwd = settings.MONERO_WALLET_RPC_PASS
-    wallet_rpc = AuthServiceProxy(
-        "{}://{}:{}@{}/json_rpc".format(protocol, user, pwd, host)
-    )
+    wallet_rpc = AuthServiceProxy("{protocol}://{user}:{pwd}@{host}/json_rpc")
 
     result = wallet_rpc.verify(
         {"data": challenge, "address": address, "signature": signature}

setup.py

@@ -68,8 +68,8 @@ setup(
         "License :: OSI Approved :: MIT License",
         "Natural Language :: English",
         "Programming Language :: Python :: 3",
-        "Programming Language :: Python :: 3.5",
         "Programming Language :: Python :: 3.6",
         "Programming Language :: Python :: 3.7",
+        "Programming Language :: Python :: 3.8",
     ],
 )

tests/test_validators.py

@@ -50,4 +50,4 @@ def test_invalid_address(network, address, settings):
     with pytest.raises(ValidationError) as error:
         validate_monero_address(address)
 
-    assert "Invalid address for {}".format(network) in str(error.value)
+    assert f"Invalid address for {network}" in str(error.value)

tox.ini

@@ -1,6 +1,6 @@
 [tox]
 envlist =
-    {py35,py36,py37}-django-22
+    {py36,py37,py38}-django-22
 
 [testenv]
 setenv =
@@ -9,6 +9,6 @@ commands = pytest --cov=django_cryptolock tests/
 deps =
     -r {toxinidir}/requirements_test.txt
 basepython =
+    py38: python3.8
     py37: python3.7
     py36: python3.6
-    py35: python3.5