diff --git a/dashmips/__main__.py b/dashmips/__main__.py
index 96d00a6..24240d3 100644
--- a/dashmips/__main__.py
+++ b/dashmips/__main__.py
@@ -23,7 +23,7 @@ def main_compile(args):
 
 def main_debug(args):
     """Start debug server for mips."""
-    debug_mips(host=args.host, port=args.port)
+    debug_mips(host=args.host, port=args.port, log=args.log)
 
 
 def main():
@@ -34,7 +34,9 @@ def main():
 
     parser.add_argument('-v', '--version', action='version', version='0.0.1')
 
-    sbp = parser.add_subparsers(title='commands', dest='command', required=True)
+    sbp = parser.add_subparsers(
+        title='commands', dest='command', required=True
+    )
     compileparse = sbp.add_parser('compile', aliases=['c'])
     debugparse = sbp.add_parser('debug', aliases=['d'])
 
@@ -60,6 +62,10 @@ def main():
     debugparse.add_argument(
         '-i', '--host', default='0.0.0.0', help='run debugger on host'
     )
+    debugparse.add_argument(
+        '-l', '--log', dest='log',
+        action='store_true', help='Log all network traffic'
+    )
     debugparse.set_defaults(func=main_debug)
 
     prog_args = parser.parse_args()
diff --git a/dashmips/debugserver.py b/dashmips/debugserver.py
index 2016fba..ecd73ea 100644
--- a/dashmips/debugserver.py
+++ b/dashmips/debugserver.py
@@ -21,10 +21,12 @@ class DebugMessage:
     error: bool = False
 
     def __post_init__(self):
+        """Ensure unique breakpoints."""
         # set to remove duplicates and sort
         self.breakpoints = sorted(set(self.breakpoints))
 
     def __iter__(self):
+        """Make DebugMessage castable to dict."""
         return iter(asdict(self).items())
 
     @staticmethod
@@ -54,7 +56,8 @@ def respond(self, msg: DebugMessage):
         msg_to_send = json.dumps(dict(msg)).encode('utf8')
         self.wfile.write(msg_to_send + b'\r\n\r\n')
         self.wfile.flush()
-        print(f"{self.client_address}: Respond {msg}")
+        if self.server.log:
+            print(f"{self.client_address}: Respond {msg}")
 
     def receive(self) -> Optional[DebugMessage]:
         """Receive Client Command."""
@@ -62,7 +65,8 @@ def receive(self) -> Optional[DebugMessage]:
             msg = DebugMessage.from_dict(
                 json.loads(self.rfile.readline().strip())
             )
-            print(f"{self.client_address}: Receive {msg}")
+            if self.server.log:
+                print(f"{self.client_address}: Receive {msg}")
             return msg
         except json.JSONDecodeError:
             return None
@@ -71,7 +75,8 @@ def handle(self):
         """Handle Client Req."""
         from dashmips.debugger import Commands
         try:
-            print(f"{self.client_address}: Connected")
+            if self.server.log:
+                print(f"{self.client_address}: Connected")
             msg = self.receive()
             if msg is None:
                 self.respond(DebugMessage(**{
@@ -111,16 +116,19 @@ class MipsDebugServer(TCPServer):
 
     def __init__(self,
                  server_address=('0.0.0.0', 9999),
+                 log=False,
                  RequestHandlerClass=MipsDebugRequestHandler,
                  bind_and_activate=True) -> None:
         """Create Mips Debug Server."""
         self.allow_reuse_address = True
+        self.log = log
         super().__init__(
             server_address,
             RequestHandlerClass,
             bind_and_activate
         )
-        print(f"Server is listening on {self.socket.getsockname()}")
+        if self.log:
+            print(f"Server is listening on {self.socket.getsockname()}")
 
     def server_bind(self):
         """Set reusable address opt."""
@@ -128,9 +136,9 @@ def server_bind(self):
         self.socket.bind(self.server_address)
 
 
-def debug_mips(host='localhost', port=9999):
+def debug_mips(host='localhost', port=9999, log=False):
     """Create a debugging instance of mips."""
-    with MipsDebugServer(server_address=(host, port)) as server:
+    with MipsDebugServer(server_address=(host, port), log=log) as server:
         try:
             server.allow_reuse_address = True
             server.serve_forever()
diff --git a/dashmips/instructions/special_instructions.py b/dashmips/instructions/special_instructions.py
index b8e9d91..c785cc9 100644
--- a/dashmips/instructions/special_instructions.py
+++ b/dashmips/instructions/special_instructions.py
@@ -4,14 +4,17 @@
 
 
 def parse(arg):
+    """Instructions that take no arguments."""
     return tuple()
 
 
 @mips_instruction('', parse)
 def nop(program):
+    """Do nothing."""
     return True
 
 
 @mips_instruction('', parse)
 def syscall(program):
+    """Call syscall specified in $v0."""
     return Syscalls[program.registers['$v0']](program)
diff --git a/dashmips/mips.py b/dashmips/mips.py
index d797617..8e4d724 100644
--- a/dashmips/mips.py
+++ b/dashmips/mips.py
@@ -7,9 +7,10 @@
 
 
 class MipsException(Exception):
-    """Mips related errors"""
+    """Mips related errors."""
 
     def __init__(self, message):
+        """Create MipsException."""
         super().__init__(message)
         self.message = message
 
diff --git a/dashmips/preprocessor.py b/dashmips/preprocessor.py
index e855449..6275592 100644
--- a/dashmips/preprocessor.py
+++ b/dashmips/preprocessor.py
@@ -88,7 +88,8 @@ def preprocess(file: TextIO) -> MipsProgram:
     processed_code = code_labels(labels, unprocessed_code)
 
     source = [
-        SourceLine(file.name, lineno=ol[0], line=ol[1]) for ol in processed_code
+        SourceLine(file.name, lineno=ol[0], line=ol[1])
+        for ol in processed_code
     ]
 
     assert 'main' in labels
diff --git a/dashmips/run.py b/dashmips/run.py
index 6f243fa..afdc710 100644
--- a/dashmips/run.py
+++ b/dashmips/run.py
@@ -13,6 +13,7 @@ def run(program: MipsProgram, runnable=lambda _: True):
 
 
 def next_instruction(program):
+    """Execute One Instruction."""
     current_pc = program.registers['pc']
     if len(program.source) < current_pc:
         # We jumped or executed beyond available text
diff --git a/dashmips/syscalls/print_syscalls.py b/dashmips/syscalls/print_syscalls.py
index 63a4889..0599e13 100644
--- a/dashmips/syscalls/print_syscalls.py
+++ b/dashmips/syscalls/print_syscalls.py
@@ -39,7 +39,6 @@ def _exit(program):
     sys.exit(program.registers['$a0'])
 
 
-
 @mips_syscall(45)
 def dump_program(program):
     """Print json format of program."""