Add typing to some basic methods in the exceptions module

DanielNoord · DanielNoord · commit b69b295840ad · 2022-11-26T13:19:19.000+01:00
diff --git a/jsonschema/exceptions.py b/jsonschema/exceptions.py
@@ -67,7 +67,7 @@ def __init__(
         for error in context:
             error.parent = self
 
-    def __repr__(self):
+    def __repr__(self) -> str:
         return f"<{self.__class__.__name__}: {self.message!r}>"
 
     def __str__(self) -> str:
@@ -104,11 +104,11 @@ def __str__(self) -> str:
         )
 
     @classmethod
-    def create_from(cls, other):
+    def create_from(cls, other: _Error):
         return cls(**other._contents())
 
     @property
-    def absolute_path(self):
+    def absolute_path(self) -> deque[str]:
         parent = self.parent
         if parent is None:
             return self.relative_path
@@ -118,7 +118,7 @@ def absolute_path(self):
         return path
 
     @property
-    def absolute_schema_path(self):
+    def absolute_schema_path(self) -> deque[str]:
         parent = self.parent
         if parent is None:
             return self.relative_schema_path
@@ -128,7 +128,7 @@ def absolute_schema_path(self):
         return path
 
     @property
-    def json_path(self):
+    def json_path(self) -> str:
         path = "$"
         for elem in self.absolute_path:
             if isinstance(elem, int):
@@ -137,7 +137,9 @@ def json_path(self):
                 path += "." + elem
         return path
 
-    def _set(self, type_checker=None, **kwargs):
+    def _set(
+        self, type_checker: _types.TypeChecker | None = None, **kwargs: Any
+    ) -> None:
         if type_checker is not None and self._type_checker is _unset:
             self._type_checker = type_checker
 
@@ -199,7 +201,7 @@ class RefResolutionError(Exception):
 
     _cause = attr.ib()
 
-    def __str__(self):
+    def __str__(self) -> str:
         return str(self._cause)
 
 
@@ -208,10 +210,10 @@ class UndefinedTypeCheck(Exception):
     A type checker was asked to check a type it did not have registered.
     """
 
-    def __init__(self, type):
+    def __init__(self, type: str) -> None:
         self.type = type
 
-    def __str__(self):
+    def __str__(self) -> str:
         return f"Type {self.type!r} is unknown to this type checker"
 
 
