diff --git a/src/kiwi/_constants.py b/src/kiwi/_constants.py
index 8c33fed..be0ab6d 100644
--- a/src/kiwi/_constants.py
+++ b/src/kiwi/_constants.py
@@ -1,7 +1,6 @@
 # system
 import os
 
-
 #############
 # ENVIRONMENT
 
@@ -10,7 +9,6 @@ KIWI_ROOT = os.getenv('KIWI_ROOT', ".")
 # default name of kiwi-scp file
 KIWI_CONF_NAME = os.getenv('KIWI_CONF_NAME', "kiwi.yml")
 
-
 ############
 # FILE NAMES
 
@@ -27,7 +25,6 @@ CONF_DIRECTORY_NAME = 'conf'
 # location for auxiliary Dockerfiles
 IMAGES_DIRECTORY_NAME = f"{KIWI_ROOT}/images"
 
-
 ####################
 # DOCKER IMAGE NAMES
 
diff --git a/src/kiwi/misc.py b/src/kiwi/misc.py
index 221b9c3..ed91da9 100644
--- a/src/kiwi/misc.py
+++ b/src/kiwi/misc.py
@@ -1,6 +1,6 @@
 def _surround(string, bang):
     midlane = f"{bang * 3} {string} {bang * 3}"
-    sidelane = bang*len(midlane)
+    sidelane = bang * len(midlane)
 
     return f"{sidelane}\n{midlane}\n{sidelane}"
 
diff --git a/src/kiwi/project.py b/src/kiwi/project.py
index 7a11fc0..60a3fbd 100644
--- a/src/kiwi/project.py
+++ b/src/kiwi/project.py
@@ -1,10 +1,9 @@
 import logging
 import os
 
-from .executable import Executable
-
 from ._constants import CONF_DIRECTORY_NAME
 from .config import LoadedConfig
+from .executable import Executable
 
 
 class Project:
diff --git a/src/kiwi/subcommands/_hidden.py b/src/kiwi/subcommands/_hidden.py
index 28ce50d..d3e0901 100644
--- a/src/kiwi/subcommands/_hidden.py
+++ b/src/kiwi/subcommands/_hidden.py
@@ -4,11 +4,11 @@ import subprocess
 
 # local
 from .._constants import CONF_DIRECTORY_NAME
-from ..executable import Executable
-from ..subcommand import SubCommand
 from ..config import LoadedConfig
+from ..executable import Executable
 from ..projects import Projects
 from ..rootkit import Rootkit, prefix_path_mnt
+from ..subcommand import SubCommand
 
 
 class ConfCopyCommand(SubCommand):
diff --git a/src/kiwi/subcommands/down.py b/src/kiwi/subcommands/down.py
index 9c4032f..b0a1147 100644
--- a/src/kiwi/subcommands/down.py
+++ b/src/kiwi/subcommands/down.py
@@ -4,10 +4,10 @@ import subprocess
 
 # local
 from ._hidden import _find_net
-from ..subcommand import ServiceCommand
 from ..config import LoadedConfig
 from ..executable import Executable
 from ..misc import are_you_sure
+from ..subcommand import ServiceCommand
 
 
 class DownCommand(ServiceCommand):
diff --git a/src/kiwi/subcommands/init.py b/src/kiwi/subcommands/init.py
index d5174be..1ca9c6a 100644
--- a/src/kiwi/subcommands/init.py
+++ b/src/kiwi/subcommands/init.py
@@ -4,8 +4,8 @@ import os
 
 # local
 from .._constants import KIWI_CONF_NAME
-from ..subcommand import SubCommand
 from ..config import DefaultConfig, LoadedConfig
+from ..subcommand import SubCommand
 
 
 class InitCommand(SubCommand):
@@ -42,7 +42,6 @@ class InitCommand(SubCommand):
 
         # check force switch
         if args.force and os.path.isfile(KIWI_CONF_NAME):
-
             logging.warning(f"Overwriting existing '{KIWI_CONF_NAME}'!")
             config = DefaultConfig.get()
 
diff --git a/src/kiwi/subcommands/purge.py b/src/kiwi/subcommands/purge.py
index 2200302..86cd372 100644
--- a/src/kiwi/subcommands/purge.py
+++ b/src/kiwi/subcommands/purge.py
@@ -4,10 +4,10 @@ import subprocess
 
 # local
 from ._hidden import _find_net
-from ..subcommand import SubCommand
 from ..config import LoadedConfig
 from ..executable import Executable
 from ..misc import are_you_sure
+from ..subcommand import SubCommand
 
 
 class PurgeCommand(SubCommand):
diff --git a/src/kiwi/subcommands/restart.py b/src/kiwi/subcommands/restart.py
index d8856c9..86fce22 100644
--- a/src/kiwi/subcommands/restart.py
+++ b/src/kiwi/subcommands/restart.py
@@ -1,6 +1,6 @@
 # local
-from ..subcommand import ServiceCommand
 from ..misc import are_you_sure
+from ..subcommand import ServiceCommand
 
 
 class RestartCommand(ServiceCommand):
diff --git a/src/kiwi/subcommands/shell.py b/src/kiwi/subcommands/shell.py
index 6ae4a0f..7547ced 100644
--- a/src/kiwi/subcommands/shell.py
+++ b/src/kiwi/subcommands/shell.py
@@ -2,9 +2,9 @@
 import logging
 import subprocess
 
+from ..config import LoadedConfig
 # local
 from ..subcommand import ServiceCommand
-from ..config import LoadedConfig
 
 
 def _service_has_executable(project, service, exe_name):
@@ -52,7 +52,7 @@ def _find_shell(args, project, service):
 
         elif i + 1 < len(shells):
             # try next in list
-            logging.info(f"Shell '{shell}' not found in container, trying '{shells[i+1]}'")
+            logging.info(f"Shell '{shell}' not found in container, trying '{shells[i + 1]}'")
 
         elif args.shell:
             # not found, user suggestion provided
diff --git a/src/kiwi/subcommands/show.py b/src/kiwi/subcommands/show.py
index 23ee8ce..d8e7a34 100644
--- a/src/kiwi/subcommands/show.py
+++ b/src/kiwi/subcommands/show.py
@@ -3,10 +3,10 @@ import logging
 import os
 import yaml
 
-# local
-from ..subcommand import ServiceCommand
 from ..project import Project
 from ..projects import Projects
+# local
+from ..subcommand import ServiceCommand
 
 
 def _print_list(strings):
diff --git a/src/kiwi/subcommands/update.py b/src/kiwi/subcommands/update.py
index 0440cdc..35bc6dd 100644
--- a/src/kiwi/subcommands/update.py
+++ b/src/kiwi/subcommands/update.py
@@ -1,6 +1,6 @@
 # local
-from ..subcommand import ServiceCommand
 from ..misc import are_you_sure
+from ..subcommand import ServiceCommand
 
 
 class UpdateCommand(ServiceCommand):
@@ -8,7 +8,7 @@ class UpdateCommand(ServiceCommand):
 
     def __init__(self):
         super().__init__(
-            'update',  num_projects='?', num_services='*',
+            'update', num_projects='?', num_services='*',
             action="Updating",
             description="Update the whole instance, a project or service(s) inside a project"
         )