Upgrade dependencies, fix types

Signed-off-by: Evgeny Markov <[email protected]>

Author: evgenymarkov

prometheus_client/exposition.py

@@ -370,8 +370,8 @@ def basic_auth_handler(
         timeout: Optional[float],
         headers: List[Tuple[str, str]],
         data: bytes,
-        username: str = None,
-        password: str = None,
+        username: Optional[str] = None,
+        password: Optional[str] = None,
 ) -> Callable[[], None]:
     """Handler that implements HTTP/HTTPS connections with Basic Auth.
 

prometheus_client/metrics_core.py

@@ -113,7 +113,7 @@ def __init__(self,
                  name: str,
                  documentation: str,
                  value: Optional[float] = None,
-                 labels: Sequence[str] = None,
+                 labels: Optional[Sequence[str]] = None,
                  created: Optional[float] = None,
                  unit: str = '',
                  ):

tox.ini

@@ -1,7 +1,6 @@
 [tox]
 envlist = coverage-clean,py3.6,py3.7,py3.8,py3.9,py3.10,pypy3.7,py3.9-nooptionals,coverage-report,flake8,isort,mypy
 
-
 [base]
 deps =
     coverage
@@ -23,27 +22,25 @@ deps = coverage
 skip_install = true
 commands = coverage erase
 
-
 [testenv:coverage-report]
 deps = coverage
 skip_install = true
 commands =
     coverage combine
     coverage report
 
-
 [testenv:flake8]
 deps =
-    flake8==3.7.8
-    flake8-docstrings==1.5.0
-    flake8-import-order==0.18.1
+    flake8==6.0.0
+    flake8-docstrings==1.6.0
+    flake8-import-order==0.18.2
 skip_install = true
 commands =
     flake8 prometheus_client/ tests/ setup.py
 
 [testenv:isort]
 deps =
-    isort==5.5.4
+    isort==5.10.1
 skip_install = true
 commands =
     isort --check prometheus_client/ tests/ setup.py
@@ -52,7 +49,7 @@ commands =
 deps =
     pytest
     asgiref
-    mypy==0.910
+    mypy==0.991
 skip_install = true
 commands =
     mypy --install-types --non-interactive prometheus_client/ tests/
@@ -77,7 +74,6 @@ per-file-ignores = prometheus_client/__init__.py:F401
 import-order-style = google
 application-import-names = prometheus_client
 
-
 [isort]
 force_alphabetical_sort_within_sections = True
 force_sort_within_sections = True