Cosmetic changes

2 files changed, 8 insertions, 7 deletions

diff --git a/qutebrowser/browser/history.py b/qutebrowser/browser/history.py
index 4163f1957..559992327 100644
--- a/qutebrowser/browser/history.py
+++ b/qutebrowser/browser/history.py
@@ -23,7 +23,7 @@ import os
 import time
 import contextlib
 import pathlib
-from typing import cast, Mapping, MutableSequence
+from typing import cast, Mapping, MutableSequence, Optional
 
 from PyQt5.QtCore import pyqtSlot, QUrl, QObject, pyqtSignal
 from PyQt5.QtWidgets import QProgressDialog, QApplication
@@ -92,7 +92,8 @@ class CompletionMetaInfo(sql.SqlTable):
         'force_rebuild': False,
     }
 
-    def __init__(self, database: sql.Database, parent: QObject = None):
+    def __init__(self, database: sql.Database,
+                 parent: Optional[QObject] = None) -> None:
         self._fields = ['key', 'value']
         self._constraints = {'key': 'PRIMARY KEY'}
         super().__init__(database, "CompletionMetaInfo", self._fields,
@@ -139,7 +140,8 @@ class CompletionHistory(sql.SqlTable):
 
     """History which only has the newest entry for each URL."""
 
-    def __init__(self, database: sql.Database, parent: QObject = None):
+    def __init__(self, database: sql.Database,
+                 parent: Optional[QObject] = None) -> None:
         super().__init__(database, "CompletionHistory", ['url', 'title', 'last_atime'],
                          constraints={'url': 'PRIMARY KEY',
                                       'title': 'NOT NULL',
@@ -155,7 +157,6 @@ class WebHistory(sql.SqlTable):
     Attributes:
         completion: A CompletionHistory instance.
         metainfo: A CompletionMetaInfo instance.
-        database: The Database instance where history is persisted.
         _progress: A HistoryProgress instance.
     """
 
@@ -165,7 +166,7 @@ class WebHistory(sql.SqlTable):
     url_cleared = pyqtSignal(QUrl)
 
     def __init__(self, database: sql.Database, progress: HistoryProgress,
-                 parent: QObject = None):
+                 parent: Optional[QObject] = None) -> None:
         super().__init__(database, "History", ['url', 'title', 'atime', 'redirect'],
                          constraints={'url': 'NOT NULL',
                                       'title': 'NOT NULL',
@@ -477,7 +478,7 @@ def debug_dump_history(dest):
         raise cmdutils.CommandError(f'Could not write history: {e}')
 
 
-def init(db_path: pathlib.Path, parent: QObject = None) -> None:
+def init(db_path: pathlib.Path, parent: Optional[QObject] = None) -> None:
     """Initialize the web history.
 
     Args:
diff --git a/qutebrowser/misc/sql.py b/qutebrowser/misc/sql.py
index 460d88ce9..814eb2bb0 100644
--- a/qutebrowser/misc/sql.py
+++ b/qutebrowser/misc/sql.py
@@ -402,7 +402,7 @@ class SqlTable(QObject):
         """Wrapper over a table in the SQL database.
 
         Args:
-            database: The Database object on which to operate.
+            database: The Database to which this table belongs.
             name: Name of the table.
             fields: A list of field names.
             constraints: A dict mapping field names to constraint strings.