diff --git a/slic/core/acquisition/diaacquisition.py b/slic/core/acquisition/diaacquisition.py
index a96c04895..033735ea5 100644
--- a/slic/core/acquisition/diaacquisition.py
+++ b/slic/core/acquisition/diaacquisition.py
@@ -38,7 +38,7 @@ class DIAAcquisition(BaseAcquisition):
         self.client = DetectorIntegrationClient(api_address)
 
 
-    def acquire(self, filename=None, channels=None, n_pulses=100, use_default_dir=True, is_HG0=False, **kwargs):
+    def acquire(self, filename=None, channels=None, n_pulses=100, use_default_dir=True, is_HG0=False):
         if filename:
             if use_default_dir:
                 filename = os.path.join(self.default_dir, filename)
diff --git a/slic/core/acquisition/pedestals.py b/slic/core/acquisition/pedestals.py
index 26f869bb1..d421315a8 100644
--- a/slic/core/acquisition/pedestals.py
+++ b/slic/core/acquisition/pedestals.py
@@ -96,7 +96,7 @@ def analyze_pedestal_on_cluster(instrument, raw_file_base, res_dir, user=None):
         cmd = f"sbatch jungfrau_create_pedestals --filename {ped} --directory {res_dir} --verbosity 4"
         commands.append(cmd)
 
-    cmd = "\;".join(commands)
+    cmd = "; ".join(commands)
     os.system(cmd)
 
 
diff --git a/slic/core/acquisition/pvacquisition.py b/slic/core/acquisition/pvacquisition.py
index e5bc7405b..ca529ada8 100644
--- a/slic/core/acquisition/pvacquisition.py
+++ b/slic/core/acquisition/pvacquisition.py
@@ -70,7 +70,7 @@ def make_arrays(pvs, n_pulses):
         shape = get_shape(val)
         shape = (n_pulses,) + shape
 
-        arr =  np.empty(shape, dtype)
+        arr = np.empty(shape, dtype)
         arrays.append(arr)
 
     return arrays
diff --git a/slic/core/acquisition/sfpaths.py b/slic/core/acquisition/sfpaths.py
index c919c76a1..08a258e59 100644
--- a/slic/core/acquisition/sfpaths.py
+++ b/slic/core/acquisition/sfpaths.py
@@ -15,7 +15,7 @@ class SwissFELPaths:
         # converted:     "/sf/alvra/data/p18442/res/JF_pedestals/pedestal_20200202_2046.JF02T09V02.res.h5"
         # send to DIA:   "/sf/alvra/data/p18442/res/JF_pedestals/pedestal_20200202_2046" where ".DETECTOR.res.h5" will be appended
 
-        pede_files = pede + "pedestal_*.res.h5" 
+        pede_files = pede + "pedestal_*.res.h5"
 
         default_channel_list = instrument + "config/com/channel_lists/default_channel_list"
 
diff --git a/slic/core/scanner/scanbackend.py b/slic/core/scanner/scanbackend.py
index 1a43b5a48..0e8046376 100644
--- a/slic/core/scanner/scanbackend.py
+++ b/slic/core/scanner/scanbackend.py
@@ -1,5 +1,4 @@
 import os
-import colorama
 
 from slic.utils import make_missing_dir
 from slic.utils.printing import printable_dict
diff --git a/slic/core/scanner/scanner.py b/slic/core/scanner/scanner.py
index 3216d99fa..9e311cc36 100644
--- a/slic/core/scanner/scanner.py
+++ b/slic/core/scanner/scanner.py
@@ -13,7 +13,7 @@ def make_positions(start, end, n):
 
 class Scanner:
 
-    def __init__(self, data_base_dir="", scan_info_dir="", default_acquisitions=[], condition=None, make_scan_sub_dir=True):
+    def __init__(self, data_base_dir="", scan_info_dir="", default_acquisitions=(), condition=None, make_scan_sub_dir=True):
         self.data_base_dir = data_base_dir
         self.scan_info_dir = scan_info_dir
         self.default_acquisitions = default_acquisitions
@@ -23,7 +23,7 @@ class Scanner:
         self.filename_generator = RunFilenameGenerator(scan_info_dir)
 
 
-    def make_scan(self, adjustables, positions, n_pulses, filename, acquisitions=[], start_immediately=True, step_info=None):
+    def make_scan(self, adjustables, positions, n_pulses, filename, acquisitions=(), start_immediately=True, step_info=None):
         filename = self.filename_generator.get_next_run_filename(filename)
 
         if not acquisitions:
diff --git a/slic/core/task/loop.py b/slic/core/task/loop.py
index 1e4722036..3e1cfa3bd 100644
--- a/slic/core/task/loop.py
+++ b/slic/core/task/loop.py
@@ -34,9 +34,9 @@ class Loop(Task):
 
 class TimedLoop(Loop):
 
-    def __init__(self, func, max_time, wait_time=0, hold=True):
+    def __init__(self, func, max_time, **kwargs):
         self.timer = Timer(max_time)
-        super().__init__(func, wait_time, hold)
+        super().__init__(func, **kwargs)
 
     def loop(self):
         while self.running and self.timer:
diff --git a/slic/core/task/task.py b/slic/core/task/task.py
index 2d10063a5..730164010 100644
--- a/slic/core/task/task.py
+++ b/slic/core/task/task.py
@@ -29,11 +29,9 @@ class Task(BaseTask):
     def status(self):
         if self.thread.ident is None:
             return "ready"
-        else:
-            if self.thread.isAlive():
-                return "running"
-            else:
-                return "done"
+        if self.thread.isAlive():
+            return "running"
+        return "done"
 
     def __repr__(self):
         name = typename(self)