diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 51dea0f..3653bde 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -17,7 +17,6 @@ jobs:
         uses: py-actions/flake8@v2
         with:
           ignore: "BLK100"
-          exclude: "tests/*"
           max-line-length: "128"
           path: "."
           plugins: "flake8-bugbear==22.1.11 flake8-black"
diff --git a/tests/detect-usb.py b/tests/detect-usb.py
index fa05753..234e29d 100755
--- a/tests/detect-usb.py
+++ b/tests/detect-usb.py
@@ -1,5 +1,4 @@
 #!/usr/bin/python3
-
 import pyudev
 import psutil
 import time
@@ -51,9 +50,9 @@ for device in iter(monitor.poll, None):
                     for partition in psutil.disk_partitions():
                         if partition.device == device.device_node:
                             print("Mounted at {}".format(partition.mountpoint))
-                            statvfs=os.statvfs(partition.mountpoint)
-                            print("size %4.1fGB"% (statvfs.f_frsize * statvfs.f_blocks // 1024 // 1024 / 1024))
-                            print("used %4.1fGB"% (statvfs.f_frsize * (statvfs.f_blocks - statvfs.f_bfree)  // 1024 // 1024 / 1024))
+                            statvfs = os.statvfs(partition.mountpoint)
+                            print("size %4.1fGB" % (statvfs.f_frsize * statvfs.f_blocks // 1024 // 1024 / 1024))
+                            print("used %4.1fGB" % (statvfs.f_frsize * (statvfs.f_blocks - statvfs.f_bfree) // 1024 // 1024 / 1024))
                             found = True
                     loop += 1
             else:
diff --git a/tests/images.py b/tests/images.py
index 1b0ff60..a5683db 100755
--- a/tests/images.py
+++ b/tests/images.py
@@ -1,5 +1,4 @@
 #!/usr/bin/python3
-
 import os
 import time
 
@@ -11,4 +10,3 @@ os.system("convert -resize 1024x600 -background black -gravity center -extent 10
 time.sleep(1)
 os.system("convert -resize 1024x600 -background black -gravity center -extent 1024x600 image2.png bgra:/dev/fb0")
 time.sleep(1)
-
diff --git a/tests/loop.py b/tests/loop.py
index bd84186..91e1626 100755
--- a/tests/loop.py
+++ b/tests/loop.py
@@ -1,17 +1,19 @@
 #!/usr/bin/python3
-import os;
+import os
+
 
 def waitMouseClick():
-    mouse = open( "/dev/input/mice", "rb" )
-    down = False;
+    mouse = open("/dev/input/mice", "rb")
+    down = False
     while True:
         buf = mouse.read(3)
-        if ((buf[0] & 0x1)==1):
+        if ((buf[0] & 0x1) == 1):
             down = True
-        if (((buf[0] & 0x1)==0) and down):        
-            break;
+        if (((buf[0] & 0x1) == 0) and down):
+            break
     mouse.close()
 
+
 while True:
     os.system("killall fim")
     os.system("fim -qa image1.png 2>/dev/null &")
@@ -19,4 +21,3 @@ while True:
     os.system("killall fim")
     os.system("fim -qa image2.png 2>/dev/null &")
     waitMouseClick()
-
diff --git a/tests/mouse-click.py b/tests/mouse-click.py
index 216d421..153187e 100755
--- a/tests/mouse-click.py
+++ b/tests/mouse-click.py
@@ -1,15 +1,15 @@
 #!/usr/bin/python3
 
 def waitMouseClick():
-    mouse = open( "/dev/input/mice", "rb" )
-    down = False;
+    mouse = open("/dev/input/mice", "rb")
+    down = False
     while True:
         buf = mouse.read(3)
-        if ((buf[0] & 0x1)==1):
+        if ((buf[0] & 0x1) == 1):
             down = True
-        if (((buf[0] & 0x1)==0) and down):        
-            break;
+        if (((buf[0] & 0x1) == 0) and down):
+            break
     mouse.close()
 
-waitMouseClick()
 
+waitMouseClick()
diff --git a/tests/progress-bar.py b/tests/progress-bar.py
index a34561f..37159f9 100755
--- a/tests/progress-bar.py
+++ b/tests/progress-bar.py
@@ -14,8 +14,8 @@ def initBar():
 
 def updateBar(progress):
     global progress_win
-    pos = (60 * progress) // 100 
-    if pos != 0 :
+    pos = (60 * progress) // 100
+    if pos != 0:
         progress_win.addstr(1, 1, "#" * pos)
         progress_win.refresh()
 
@@ -26,8 +26,5 @@ while loading <= 100:
     time.sleep(0.03)
     updateBar(loading)
     loading += 3
-
 time.sleep(1)
-
-#curses.endwin()
 curses.flushinp()
diff --git a/tests/slideshow.py b/tests/slideshow.py
index 1f507a7..da468de 100755
--- a/tests/slideshow.py
+++ b/tests/slideshow.py
@@ -1,17 +1,19 @@
 #!/usr/bin/python3
-import os;
+import os
+
 
 def waitMouseClick():
-    mouse = open( "/dev/input/mice", "rb" )
-    down = False;
+    mouse = open("/dev/input/mice", "rb")
+    down = False
     while True:
         buf = mouse.read(3)
-        if ((buf[0] & 0x1)==1):
+        if ((buf[0] & 0x1) == 1):
             down = True
-        if (((buf[0] & 0x1)==0) and down):        
-            break;
+        if (((buf[0] & 0x1) == 0) and down):
+            break
     mouse.close()
 
+
 os.system("fim *.png -qa -c 'while(1){display;sleep 1;next;}' </dev/null 2>/dev/null &")
 waitMouseClick()
 os.system("killall -s 9 fim")
diff --git a/tests/states.py b/tests/states.py
index bee200c..0bdee90 100755
--- a/tests/states.py
+++ b/tests/states.py
@@ -1,20 +1,20 @@
 #!/usr/bin/python3
-# 
 
 def waitMouseClick():
     print("wait mouse click")
-    mouse = open( "/dev/input/mice", "rb" )
-    down = False;
+    mouse = open("/dev/input/mice", "rb")
+    down = False
     while True:
         buf = mouse.read(3)
-        if ((buf[0] & 0x1)==1):
+        if ((buf[0] & 0x1) == 1):
             down = True
-        if (((buf[0] & 0x1)==0) and down):        
-            break;
+        if (((buf[0] & 0x1) == 0) and down):
+            break
     mouse.close()
 
+
 def loop(state):
-    print('loop ' +state)
+    print('loop ' + state)
     match state:
         case "START":
             waitMouseClick()
@@ -26,16 +26,13 @@ def loop(state):
             waitMouseClick()
             return "STOP"
         case _:
-            print("Unknwn state "+state)
+            print("Unknwn state " + state)
             return "STOP"
     print("end loop")
 
 
 if __name__ == "__main__":
     # The client code.
-
-    state="START"
-    while (state!="STOP"):
+    state = "START"
+    while (state != "STOP"):
         state = loop(state)
-
-