fixing mypy error from #15693

Author: bandophahita

py/selenium/webdriver/remote/webelement.py

@@ -77,7 +77,11 @@ def __init__(self, parent, id_) -> None:
         self._id = id_
 
     def __repr__(self):
-        return f'<{type(self).__module__}.{type(self).__name__} (session="{self._parent.session_id}", element="{self._id}")>'
+        return f'<{type(self).__module__}.{type(self).__name__} (session="{self.session_id}", element="{self._id}")>'
+
+    @property
+    def session_id(self) -> str:
+        return self._parent.session_id
 
     @property
     def tag_name(self) -> str:

py/selenium/webdriver/support/wait.py

@@ -81,15 +81,15 @@ def __init__(
         # avoid the divide by zero
         if self._poll == 0:
             self._poll = POLL_FREQUENCY
-        exceptions = list(IGNORED_EXCEPTIONS)
+        exceptions: list = list(IGNORED_EXCEPTIONS)
         if ignored_exceptions:
             try:
                 exceptions.extend(iter(ignored_exceptions))
             except TypeError:  # ignored_exceptions is not iterable
                 exceptions.append(ignored_exceptions)
         self._ignored_exceptions = tuple(exceptions)
 
-    def __repr__(self):
+    def __repr__(self) -> str:
         return f'<{type(self).__module__}.{type(self).__name__} (session="{self._driver.session_id}")>'
 
     def until(self, method: Callable[[D], Union[Literal[False], T]], message: str = "") -> T: