diff --git a/Orange/widgets/data/owfile.py b/Orange/widgets/data/owfile.py
index 67b46a3a32b..4a33416efe5 100644
--- a/Orange/widgets/data/owfile.py
+++ b/Orange/widgets/data/owfile.py
@@ -10,7 +10,6 @@
 from AnyQt.QtCore import Qt, QTimer, QSize
 
 from Orange.canvas.gui.utils import OSX_NSURL_toLocalFile
-from Orange.data import StringVariable
 from Orange.data.table import Table, get_sample_datasets_dir
 from Orange.data.io import FileFormat, UrlReader, class_from_qualified_name
 from Orange.widgets import widget, gui
@@ -18,7 +17,7 @@
     PerfectDomainContextHandler, SettingProvider
 from Orange.widgets.utils.domaineditor import DomainEditor
 from Orange.widgets.utils.itemmodels import PyListModel
-from Orange.widgets.utils.filedialogs import RecentPathsWComboMixin, dialog_formats, \
+from Orange.widgets.utils.filedialogs import RecentPathsWComboMixin, \
     open_filename_dialog
 from Orange.widgets.widget import Output
 
@@ -41,7 +40,7 @@ def add_origin(examples, filename):
         return
     vars = examples.domain.variables + examples.domain.metas
     strings = [var for var in vars if var.is_string]
-    dir_name, basename = os.path.split(filename)
+    dir_name, _ = os.path.split(filename)
     for var in strings:
         if "type" in var.attributes and "origin" not in var.attributes:
             var.attributes["origin"] = dir_name
diff --git a/Orange/widgets/utils/filedialogs.py b/Orange/widgets/utils/filedialogs.py
index 44b2303132f..63279693616 100644
--- a/Orange/widgets/utils/filedialogs.py
+++ b/Orange/widgets/utils/filedialogs.py
@@ -235,8 +235,6 @@ def search(self, searchpaths):
                 path = os.path.join(base, self.relpath)
                 if os.path.exists(path):
                     return os.path.normpath(path)
-        else:
-            return None
 
     def resolve(self, searchpaths):
         if self.prefix is None and os.path.exists(self.abspath):
@@ -371,7 +369,7 @@ def select_file(self, n):
 
     def last_path(self):
         """Return the most recent absolute path or `None` if there is none"""
-        return self.recent_paths and self.recent_paths[0].abspath or None
+        return self.recent_paths[0].abspath if self.recent_paths else None
 
 
 class RecentPathsWComboMixin(RecentPathsWidgetMixin):