diff --git a/misoclib/tools/litescope/host/driver/uart.py b/misoclib/tools/litescope/host/driver/uart.py
index 4e36ca56b..9a0b65bbd 100644
--- a/misoclib/tools/litescope/host/driver/uart.py
+++ b/misoclib/tools/litescope/host/driver/uart.py
@@ -4,7 +4,7 @@ from misoclib.tools.litescope.host.driver.reg import *
 
 
 def write_b(uart, data):
-    uart.write(pack('B',data))
+    uart.write(pack('B', data))
 
 
 class LiteScopeUARTDriver:
diff --git a/misoclib/tools/litescope/host/dump/__init__.py b/misoclib/tools/litescope/host/dump/__init__.py
index db00ac7f1..2b562ae02 100644
--- a/misoclib/tools/litescope/host/dump/__init__.py
+++ b/misoclib/tools/litescope/host/dump/__init__.py
@@ -109,5 +109,5 @@ class Dump:
     def __len__(self):
         l = 0
         for var in self.vars:
-            l = max(len(var),l)
+            l = max(len(var), l)
         return l
diff --git a/misoclib/tools/litescope/host/dump/csv.py b/misoclib/tools/litescope/host/dump/csv.py
index 97209088b..601e3503b 100644
--- a/misoclib/tools/litescope/host/dump/csv.py
+++ b/misoclib/tools/litescope/host/dump/csv.py
@@ -46,8 +46,8 @@ class CSVDump(Dump):
 
 if __name__ == '__main__':
     dump = CSVDump()
-    dump.add(Var("foo1", 1, [0,1,0,1,0,1]))
-    dump.add(Var("foo2", 2, [1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0]))
+    dump.add(Var("foo1", 1, [0, 1, 0, 1, 0, 1]))
+    dump.add(Var("foo2", 2, [1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0]))
     ramp = [i%128 for i in range(1024)]
     dump.add(Var("ramp", 16, ramp))
     dump.write("dump.csv")
diff --git a/misoclib/tools/litescope/host/dump/python.py b/misoclib/tools/litescope/host/dump/python.py
index b548f1627..c0294c4a3 100644
--- a/misoclib/tools/litescope/host/dump/python.py
+++ b/misoclib/tools/litescope/host/dump/python.py
@@ -27,8 +27,8 @@ class PythonDump(Dump):
 
 if __name__ == '__main__':
     dump = PythonDump()
-    dump.add(Var("foo1", 1, [0,1,0,1,0,1]))
-    dump.add(Var("foo2", 2, [1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0]))
+    dump.add(Var("foo1", 1, [0, 1, 0, 1, 0, 1]))
+    dump.add(Var("foo2", 2, [1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0]))
     ramp = [i%128 for i in range(1024)]
     dump.add(Var("ramp", 16, ramp))
     dump.write("dump.py")
diff --git a/misoclib/tools/litescope/host/dump/sigrok.py b/misoclib/tools/litescope/host/dump/sigrok.py
index 776c1c8d3..d84d90d7d 100644
--- a/misoclib/tools/litescope/host/dump/sigrok.py
+++ b/misoclib/tools/litescope/host/dump/sigrok.py
@@ -141,8 +141,8 @@ samplerate = {} KHz
 
 if __name__ == '__main__':
     dump = SigrokDump()
-    dump.add(Var("foo1", 1, [0,1,0,1,0,1]))
-    dump.add(Var("foo2", 2, [1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0]))
+    dump.add(Var("foo1", 1, [0, 1, 0, 1, 0, 1]))
+    dump.add(Var("foo2", 2, [1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0]))
     ramp = [i%128 for i in range(1024)]
     dump.add(Var("ramp", 16, ramp))
     dump.write("dump.sr")
diff --git a/misoclib/tools/litescope/host/dump/vcd.py b/misoclib/tools/litescope/host/dump/vcd.py
index 3b43a7784..5db234f51 100644
--- a/misoclib/tools/litescope/host/dump/vcd.py
+++ b/misoclib/tools/litescope/host/dump/vcd.py
@@ -121,8 +121,8 @@ class VCDDump(Dump):
 
 if __name__ == '__main__':
     dump = VCDDump()
-    dump.add(Var("foo1", 1, [0,1,0,1,0,1]))
-    dump.add(Var("foo2", 2, [1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0]))
+    dump.add(Var("foo1", 1, [0, 1, 0, 1, 0, 1]))
+    dump.add(Var("foo2", 2, [1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0]))
     ramp = [i%128 for i in range(1024)]
     dump.add(Var("ramp", 16, ramp))
     dump.write("dump.vcd")