diff --git a/tools/update_selenoid_browsers.py b/tools/update_selenoid_browsers.py
index bf0c39850..02cfd99fd 100644
--- a/tools/update_selenoid_browsers.py
+++ b/tools/update_selenoid_browsers.py
@@ -150,8 +150,7 @@ def check_and_download_vnc_browser_image(browser_name, browser_version):
         elif idx == len(version_tag):
             print("{0} Image is not available.".format(image_name))
             vnc_image_available = False
-        else:
-            pass
+
     return vnc_image_available
 
 
diff --git a/web/pgadmin/browser/server_groups/servers/databases/schemas/tables/utils.py b/web/pgadmin/browser/server_groups/servers/databases/schemas/tables/utils.py
index 445cafb2d..8f6158de0 100644
--- a/web/pgadmin/browser/server_groups/servers/databases/schemas/tables/utils.py
+++ b/web/pgadmin/browser/server_groups/servers/databases/schemas/tables/utils.py
@@ -776,9 +776,6 @@ class BaseTableView(PGChildNodeView, BasePartitionTable):
                     return False
             return True
 
-        elif key == 'exclude_constraint':
-            pass
-
         return True
 
     @staticmethod
diff --git a/web/pgadmin/misc/themes/__init__.py b/web/pgadmin/misc/themes/__init__.py
index 37559da16..d874ab1e6 100644
--- a/web/pgadmin/misc/themes/__init__.py
+++ b/web/pgadmin/misc/themes/__init__.py
@@ -36,9 +36,7 @@ def Themes(app):
             try:
                 misc_preference = Preferences.module('misc')
                 theme = misc_preference.preference('theme').get()
-                if theme not in all_themes:
-                    pass
-                else:
+                if theme in all_themes:
                     theme_css = all_themes[theme]['cssfile'] + '.css'
             except Exception:
                 # Let the default theme go if exception occurs
diff --git a/web/pgadmin/tools/backup/__init__.py b/web/pgadmin/tools/backup/__init__.py
index ad438573a..39b546844 100644
--- a/web/pgadmin/tools/backup/__init__.py
+++ b/web/pgadmin/tools/backup/__init__.py
@@ -240,34 +240,33 @@ def filename_with_file_manager_path(_file, create_file=True):
     Args:
         file: File name returned from client file manager
         create_file: Set flag to False when file creation doesn't required
-
     Returns:
         Filename to use for backup with full path taken from preference
     """
     # Set file manager directory from preference
     storage_dir = get_storage_directory()
-
     if storage_dir:
         _file = os.path.join(storage_dir, _file.lstrip(u'/').lstrip(u'\\'))
     elif not os.path.isabs(_file):
         _file = os.path.join(document_dir(), _file)
 
+    def short_filepath():
+        short_path = fs_short_path(_file)
+        # fs_short_path() function may return empty path on Windows
+        # if directory doesn't exists. In that case we strip the last path
+        # component and get the short path.
+        if os.name == 'nt' and short_path == '':
+            base_name = os.path.basename(_file)
+            dir_name = os.path.dirname(_file)
+            short_path = fs_short_path(dir_name) + '\\' + base_name
+        return short_path
+
     if create_file:
         # Touch the file to get the short path of the file on windows.
         with open(_file, 'a'):
-            pass
-
-    short_path = fs_short_path(_file)
-
-    # fs_short_path() function may return empty path on Windows
-    # if directory doesn't exists. In that case we strip the last path
-    # component and get the short path.
-    if os.name == 'nt' and short_path == '':
-        base_name = os.path.basename(_file)
-        dir_name = os.path.dirname(_file)
-        short_path = fs_short_path(dir_name) + '\\' + base_name
+            return short_filepath()
 
-    return short_path
+    return short_filepath()
 
 
 @blueprint.route(
diff --git a/web/pgadmin/tools/import_export/__init__.py b/web/pgadmin/tools/import_export/__init__.py
index 13b70fa87..a50bf3868 100644
--- a/web/pgadmin/tools/import_export/__init__.py
+++ b/web/pgadmin/tools/import_export/__init__.py
@@ -192,7 +192,7 @@ def filename_with_file_manager_path(_file, _present=False):
     if not _present:
         # Touch the file to get the short path of the file on windows.
         with open(_file, 'a'):
-            pass
+            return fs_short_path(_file)
     else:
         if not os.path.isfile(_file):
             return None
diff --git a/web/pgadmin/tools/schema_diff/directory_compare.py b/web/pgadmin/tools/schema_diff/directory_compare.py
index 0a3738e83..853b51a47 100644
--- a/web/pgadmin/tools/schema_diff/directory_compare.py
+++ b/web/pgadmin/tools/schema_diff/directory_compare.py
@@ -345,7 +345,7 @@ def directory_diff(source_dict, target_dict, ignore_keys=[], difference={}):
 
         # ignore the keys if available.
         if key in ignore_keys:
-            pass
+            continue
         elif key in tar_only:
             if type(target_dict[key]) is list:
                 difference[key] = {}
diff --git a/web/pgadmin/utils/csv.py b/web/pgadmin/utils/csv.py
index 89615d449..749f14609 100644
--- a/web/pgadmin/utils/csv.py
+++ b/web/pgadmin/utils/csv.py
@@ -383,17 +383,15 @@ class reader(object):
             self.parse_add_char(c)
 
     def _parse_in_quoted_field(self, c):
-        if c == '\0':
-            pass
-        elif c == self.dialect.escapechar:
+        if c != '\0' and c == self.dialect.escapechar:
             self.state = ESCAPE_IN_QUOTED_FIELD
-        elif (c == self.dialect.quotechar and
-              self.dialect.quoting != QUOTE_NONE):
+        elif c != '\0' and (c == self.dialect.quotechar and
+                            self.dialect.quoting != QUOTE_NONE):
             if self.dialect.doublequote:
                 self.state = QUOTE_IN_QUOTED_FIELD
             else:
                 self.state = IN_FIELD
-        else:
+        elif c != '\0':
             self.parse_add_char(c)
 
     def _parse_escape_in_quoted_field(self, c):
@@ -427,11 +425,9 @@ class reader(object):
             ))
 
     def _parse_eat_crnl(self, c):
-        if c == '\n' or c == '\r':
-            pass
-        elif c == '\0':
+        if c != '\n' and c != '\r' and c == '\0':
             self.state = START_RECORD
-        else:
+        elif c != '\n' and c != '\r':
             raise Error('new-line character seen in unquoted field - do you '
                         'need to open the file in universal-newline mode?')
 
diff --git a/web/pgadmin/utils/session.py b/web/pgadmin/utils/session.py
index 600553040..a8b94142f 100644
--- a/web/pgadmin/utils/session.py
+++ b/web/pgadmin/utils/session.py
@@ -219,7 +219,7 @@ class FileBackedSessionManager(SessionManager):
 
         # touch the file
         with open(fname, 'wb'):
-            pass
+            return ManagedSession(sid=sid)
 
         return ManagedSession(sid=sid)
 
diff --git a/web/regression/feature_utils/base_feature_test.py b/web/regression/feature_utils/base_feature_test.py
index 34a1de949..4c41474c1 100644
--- a/web/regression/feature_utils/base_feature_test.py
+++ b/web/regression/feature_utils/base_feature_test.py
@@ -107,7 +107,5 @@ class BaseFeatureTest(BaseTestGenerator):
         try:
             os.mkdir(path)
         except OSError as e:
-            if e.errno == errno.EEXIST:
-                pass
-            else:
+            if e.errno != errno.EEXIST:
                 raise