diff --git a/core/exclude.py b/core/exclude.py
index 7d0e2658..2482bd7d 100644
--- a/core/exclude.py
+++ b/core/exclude.py
@@ -507,7 +507,6 @@ if ISWINDOWS:
     def has_sep(regexp):
         return "\\" + sep in regexp
 
-
 else:
 
     def has_sep(regexp):
diff --git a/hscommon/desktop.py b/hscommon/desktop.py
index 96e33839..945a5fed 100644
--- a/hscommon/desktop.py
+++ b/hscommon/desktop.py
@@ -63,7 +63,6 @@ try:
             appname = proxy.bundleInfo_("CFBundleName")
         return op.join(base, appname)
 
-
 except ImportError:
     try:
         from PyQt5.QtCore import QUrl, QStandardPaths
diff --git a/hscommon/util.py b/hscommon/util.py
index 8a68119e..059470b7 100644
--- a/hscommon/util.py
+++ b/hscommon/util.py
@@ -226,7 +226,7 @@ def format_time_decimal(seconds):
 
 
 SIZE_DESC = ("B", "KB", "MB", "GB", "TB", "PB", "EB", "ZB", "YB")
-SIZE_VALS = tuple(1024 ** i for i in range(1, 9))
+SIZE_VALS = tuple(1024**i for i in range(1, 9))
 
 
 def format_size(size, decimal=0, forcepower=-1, showdesc=True):
@@ -258,7 +258,7 @@ def format_size(size, decimal=0, forcepower=-1, showdesc=True):
     if decimal == 0:
         divided_size = ceil(divided_size)
     else:
-        divided_size = ceil(divided_size * (10 ** decimal)) / (10 ** decimal)
+        divided_size = ceil(divided_size * (10**decimal)) / (10**decimal)
     if negative:
         divided_size *= -1
     result = size_format % divided_size