Fix initial issues reported by mypy.

Author: fredrikt

src/saml2/__init__.py

@@ -17,6 +17,9 @@
 """
 
 import logging
+from typing import Any
+from typing import Optional
+from typing import Union
 from xml.etree import ElementTree
 
 import defusedxml.ElementTree
@@ -433,14 +436,14 @@ class SamlBase(ExtensionContainer):
     nodes into ExtensionElements.
     """
 
-    c_children = {}
-    c_attributes = {}
-    c_attribute_type = {}
-    c_child_order = []
-    c_cardinality = {}
-    c_any = None
-    c_any_attribute = None
-    c_value_type = None
+    c_children: Any = {}
+    c_attributes: Any = {}
+    c_attribute_type: Any = {}
+    c_child_order: list[str] = []
+    c_cardinality: dict[str, dict[str, int]] = {}
+    c_any: Optional[dict[str, str]] = None
+    c_any_attribute: Optional[dict[str, str]] = None
+    c_value_type: Any = None
     c_ns_prefix = None
 
     def _get_all_c_children_with_order(self):

src/saml2/authn.py

@@ -269,5 +269,5 @@ def _verify(self, pwd, user):
 
 except ImportError:
 
-    class LDAPAuthn(UserAuthnMethod):
+    class LDAPAuthn(UserAuthnMethod):  # type: ignore[no-redef]
         pass

src/saml2/entity.py

@@ -1583,7 +1583,7 @@ def artifact2destination(self, artifact, descriptor):
 
         typecode = _art[:2]
         if typecode != ARTIFACT_TYPECODE:
-            raise ValueError(f"Invalid artifact typecode '{typecode}' should be {ARTIFACT_TYPECODE}")
+            raise ValueError(f"Invalid artifact typecode {repr(typecode)} should be {repr(ARTIFACT_TYPECODE)}")
 
         try:
             endpoint_index = str(int(_art[2:4]))

src/saml2/httputil.py

@@ -4,6 +4,7 @@
 from http.cookies import SimpleCookie
 import logging
 import time
+from typing import Optional
 from urllib.parse import parse_qs
 from urllib.parse import quote
 
@@ -22,7 +23,7 @@
 
 
 class Response:
-    _template = None
+    _template: Optional[str] = None
     _status = "200 OK"
     _content_type = "text/html"
     _mako_template = None

src/saml2/pack.py

@@ -13,7 +13,7 @@
 try:
     import html
 except Exception:
-    import cgi as html
+    import cgi as html  # type: ignore[no-redef]
 
 import logging
 from urllib.parse import urlencode

src/saml2/version.py

@@ -1,7 +1,7 @@
 try:
     from importlib.metadata import version as _resolve_package_version
 except ImportError:
-    from importlib_metadata import version as _resolve_package_version
+    from importlib_metadata import version as _resolve_package_version  # type: ignore[no-redef]
 
 
 def _parse_version():