diff --git a/modules/sfp_abuseipdb.py b/modules/sfp_abuseipdb.py
index 8b07db3129..869fed7de6 100644
--- a/modules/sfp_abuseipdb.py
+++ b/modules/sfp_abuseipdb.py
@@ -142,6 +142,7 @@ def queryBlacklist(self):
 
     def parseBlacklist(self, blacklist):
         """Parse plaintext blacklist
+
         Args:
             blacklist (str): plaintext blacklist from AbuseIPDB
 
diff --git a/modules/sfp_hybrid_analysis.py b/modules/sfp_hybrid_analysis.py
index 23bc4ce136..507f2dbd05 100644
--- a/modules/sfp_hybrid_analysis.py
+++ b/modules/sfp_hybrid_analysis.py
@@ -63,9 +63,6 @@ class sfp_hybrid_analysis(SpiderFootPlugin):
     errorState = False
 
     def setup(self, sfc, userOpts=dict()):
-        """
-        Initialize module and module options
-        """
         self.sf = sfc
         self.results = self.tempStorage()
         self.errorState = False
@@ -74,21 +71,19 @@ def setup(self, sfc, userOpts=dict()):
             self.opts[opt] = userOpts[opt]
 
     def watchedEvents(self):
-        """
-        What events is this module interested in for input
-        """
         return ["IP_ADDRESS", "DOMAIN_NAME"]
 
     def producedEvents(self):
-        """
-        What events this module produces
-        """
         return ["RAW_RIR_DATA", "INTERNET_NAME", "DOMAIN_NAME", "LINKED_URL_INTERNAL"]
 
     def queryDomain(self, qry):
-        """
-        Query domain
-        https://www.hybrid-analysis.com/docs/api/v2
+        """Query a domain
+
+        Args:
+            qry (str): domain
+
+        Returns:
+            str: API response as JSON
         """
 
         params = {
@@ -111,9 +106,13 @@ def queryDomain(self, qry):
         return self.parseAPIResponse(res)
 
     def queryHost(self, qry):
-        """
-        Query host
-        https://www.hybrid-analysis.com/docs/api/v2
+        """Query a host
+
+        Args:
+            qry (str): host
+
+        Returns:
+            str: API response as JSON
         """
 
         params = {
@@ -136,9 +135,13 @@ def queryHost(self, qry):
         return self.parseAPIResponse(res)
 
     def queryHash(self, qry):
-        """
-        Query hash
-        https://www.hybrid-analysis.com/docs/api/v2
+        """Query a hash
+
+        Args:
+            qry (str): hash
+
+        Returns:
+            str: API response as JSON
         """
 
         params = {
@@ -161,8 +164,13 @@ def queryHash(self, qry):
         return self.parseAPIResponse(res)
 
     def parseAPIResponse(self, res):
-        """
-        Parse API response
+        """Parse HTTP response from API
+
+        Args:
+            res (dict): HTTP response from SpiderFoot.fetchUrl()
+
+        Returns:
+            str: API response as JSON
         """
 
         if res['code'] == '400':
@@ -194,10 +202,6 @@ def parseAPIResponse(self, res):
         return data
 
     def handleEvent(self, event):
-        """
-        Handle events sent to this module
-        """
-
         eventName = event.eventType
         srcModuleName = event.module
         eventData = event.data
diff --git a/modules/sfp_recondev.py b/modules/sfp_recondev.py
index fa97c66dd2..c5b4e242aa 100644
--- a/modules/sfp_recondev.py
+++ b/modules/sfp_recondev.py
@@ -66,7 +66,14 @@ def producedEvents(self):
         return ["RAW_RIR_DATA", "INTERNET_NAME"]
 
     def queryDomain(self, qry):
-        """https://recon.dev/api/docs"""
+        """Query a domain
+
+        Args:
+            qry (str): domain
+
+        Returns:
+            str: API response as JSON
+        """
 
         headers = {
             "Accept": "application/json"
diff --git a/setup.cfg b/setup.cfg
index 6d83bcee82..62a328abe3 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,10 +1,14 @@
 [flake8]
 flake8-max-line-length = 120
 max-complexity = 100
-select = C,E,F,W,B,DUO
-ignore = E501 W503 B006 DUO130 D
+select = C,E,F,W,B,DUO,D
+ignore = E501 W503 B006 DUO130
 per-file-ignores =
     spiderfoot/__init__.py:F401
+    sfcli.py:D
+    sflib.py:D
+    sfscan.py:D
+    sfwebui.py:D
 
 [darglint]
 docstring_style=google
diff --git a/sf.py b/sf.py
index 3d2fc40de9..c6308480a3 100755
--- a/sf.py
+++ b/sf.py
@@ -422,7 +422,12 @@ def start_scan(sfConfig, sfModules, args):
 
 
 def start_web_server(sfWebUiConfig, sfConfig):
-    """Start the web server so you can start looking at results"""
+    """Start the web server so you can start looking at results
+
+    Args:
+        sfWebUiConfig (dict): web server options
+        sfConfig (dict): SpiderFoot config options
+    """
 
     web_host = sfWebUiConfig.get('host', '127.0.0.1')
     web_port = sfWebUiConfig.get('port', 5001)
@@ -531,7 +536,12 @@ def start_web_server(sfWebUiConfig, sfConfig):
 
 
 def handle_abort(signal, frame):
-    """Handle interrupt and abort scan."""
+    """Handle interrupt and abort scan.
+
+    Args:
+        signal: TBD
+        frame: TBD
+    """
     global dbh
     global scanId
 
diff --git a/sfscan.py b/sfscan.py
index edb746162c..651db6ca32 100644
--- a/sfscan.py
+++ b/sfscan.py
@@ -188,12 +188,10 @@ def __init__(self, scanName, scanId, targetValue, targetType, moduleList, global
 
     @property
     def scanId(self):
-        """Unique identifier for this scan"""
         return self.__scanId
 
     @property
     def status(self):
-        """Status of this scan"""
         return self.__status
 
     def __setStatus(self, status, started=None, ended=None):
@@ -204,9 +202,6 @@ def __setStatus(self, status, started=None, ended=None):
             started (float): timestamp at start of scan
             ended (float): timestamp at end of scan
 
-        Returns:
-            None
-
         Raises:
             TypeError: arg type was invalid
             ValueError: arg value was invalid
diff --git a/spiderfoot/db.py b/spiderfoot/db.py
index 92cbd4e9b3..ac0df557cf 100644
--- a/spiderfoot/db.py
+++ b/spiderfoot/db.py
@@ -252,9 +252,6 @@ def __init__(self, opts, init=False):
             init (bool): initialise the database schema.
                          if the database file does not exist this option will be ignored.
 
-        Returns:
-            None: success
-
         Raises:
             TypeError: arg type was invalid
             ValueError: arg value was invalid
@@ -329,9 +326,6 @@ def __dbregex__(qry, data):
     def create(self):
         """Create the database schema.
 
-        Returns:
-            None: success
-
         Raises:
             IOError: database I/O failed
         """
@@ -348,11 +342,7 @@ def create(self):
                 raise IOError(f"SQL error encountered when setting up database: {e.args[0]}")
 
     def close(self):
-        """Close the database handle
-
-        Returns:
-            None: success
-        """
+        """Close the database handle."""
 
         with self.dbhLock:
             self.dbh.close()
@@ -467,10 +457,8 @@ def scanLogEvent(self, instanceId, classification, message, component=None):
             message (str): TBD
             component (str): TBD
 
-        Returns:
-            None: success
-
         Raises:
+            TypeError: arg type was invalid
             IOError: database I/O failed
 
         Todo:
@@ -515,9 +503,6 @@ def scanInstanceCreate(self, instanceId, scanName, scanTarget):
             scanName(str): scan name
             scanTarget (str): scan target
 
-        Returns:
-            None: success
-
         Raises:
             TypeError: arg type was invalid
             IOError: database I/O failed
@@ -554,9 +539,6 @@ def scanInstanceSet(self, instanceId, started=None, ended=None, status=None):
             ended (str): scan end time
             status (str): scan status
 
-        Returns:
-            None: success
-
         Raises:
             TypeError: arg type was invalid
             IOError: database I/O failed
@@ -854,9 +836,6 @@ def scanInstanceDelete(self, instanceId):
         Args:
             instanceId (str): scan instance ID
 
-        Returns:
-            None: success
-
         Raises:
             TypeError: arg type was invalid
             IOError: database I/O failed
@@ -926,9 +905,6 @@ def configSet(self, optMap=dict()):
         Args:
             optMap (dict): config options
 
-        Returns:
-            None: success
-
         Raises:
             TypeError: arg type was invalid
             ValueError: arg value was invalid
@@ -993,9 +969,6 @@ def configClear(self):
         """Reset the config to default.
         Clears the config from the database and lets the hard-coded settings in the code take effect.
 
-        Returns:
-            None: success
-
         Raises:
             IOError: database I/O failed
         """
@@ -1015,9 +988,6 @@ def scanConfigSet(self, id, optMap=dict()):
             id (int): scan instance ID
             optMap (dict): config options
 
-        Returns:
-            None: success
-
         Raises:
             TypeError: arg type was invalid
             ValueError: arg value was invalid
@@ -1095,9 +1065,6 @@ def scanEventStore(self, instanceId, sfEvent, truncateSize=0):
             sfEvent (SpiderFootEvent): event to be stored in the database
             truncateSize (int): truncate size for event data
 
-        Returns:
-            None: success
-
         Raises:
             TypeError: arg type was invalid
             ValueError: arg value was invalid
@@ -1225,6 +1192,9 @@ def scanInstanceList(self):
     def scanResultHistory(self, instanceId):
         """History of data from the scan.
 
+        Args:
+            instanceId (str): scan instance ID
+
         Returns:
             list: scan data history
 
@@ -1361,7 +1331,7 @@ def scanElementSourcesAll(self, instanceId, childData):
 
         Raises:
             TypeError: arg type was invalid
-            IOError: database I/O failed
+            ValueError: arg value was invalid
         """
 
         if not isinstance(instanceId, str):
@@ -1432,7 +1402,6 @@ def scanElementChildrenAll(self, instanceId, parentIds):
 
         Raises:
             TypeError: arg type was invalid
-            IOError: database I/O failed
 
         Note: This function is not the same as the scanElementParent* functions.
               This function returns only ids.
diff --git a/spiderfoot/event.py b/spiderfoot/event.py
index b6335c5707..ba6c00b914 100644
--- a/spiderfoot/event.py
+++ b/spiderfoot/event.py
@@ -46,10 +46,6 @@ def __init__(self, eventType, data, module, sourceEvent, confidence=100, visibil
             confidence (int): how sure are we of this data's validity, 0-100
             visibility (int): how 'visible' was this data, 0-100
             risk (int): how much risk does this data represent, 0-100
-
-        Raises:
-            TypeError: arg type was invalid
-            ValueError: arg value was invalid
         """
 
         self._generated = time.time()
@@ -116,12 +112,10 @@ def sourceEventHash(self):
 
     @property
     def actualSource(self):
-        """actual source"""
         return self._actualSource
 
     @property
     def moduleDataSource(self):
-        """module data source"""
         return self._moduleDataSource
 
     @property
@@ -216,6 +210,9 @@ def risk(self, risk):
     @module.setter
     def module(self, module):
         """
+        Args:
+            module (str): module
+
         Raises:
             TypeError: module type was invalid
             ValueError: module value was invalid
@@ -232,7 +229,11 @@ def module(self, module):
 
     @data.setter
     def data(self, data):
-        """
+        """Event data
+
+        Args:
+            data (str): data
+
         Raises:
             TypeError: data type was invalid
             ValueError: data value was invalid
@@ -248,7 +249,11 @@ def data(self, data):
 
     @sourceEvent.setter
     def sourceEvent(self, sourceEvent):
-        """
+        """source event
+
+        Args:
+            sourceEvent (SpiderFootEvent): source event
+
         Raises:
             TypeError: sourceEvent type was invalid
         """
@@ -295,7 +300,13 @@ def asDict(self):
         return evtDict
 
     def getHash(self):
-        """Required for SpiderFoot HX compatibility of modules"""
+        """Event hash
+
+        Note: required for SpiderFoot HX compatibility of modules.
+
+        Returns:
+            str: event hash
+        """
         return self.hash
 
 # end of SpiderFootEvent class
diff --git a/spiderfoot/plugin.py b/spiderfoot/plugin.py
index 1303375569..43acdc5a88 100644
--- a/spiderfoot/plugin.py
+++ b/spiderfoot/plugin.py
@@ -54,7 +54,11 @@ def __init__(self):
 
     def _updateSocket(self, socksProxy):
         """Hack to override module's use of socket, replacing it with
-        one that uses the supplied SOCKS server."""
+        one that uses the supplied SOCKS server.
+
+        Args:
+            socksProxy (str): SOCKS proxy
+        """
         self.socksProxy = socksProxy
 
     def clearListeners(self):
@@ -65,12 +69,22 @@ def clearListeners(self):
         self._stopScanning = False
 
     def setup(self, sf, userOpts={}):
-        """Will always be overriden by the implementer."""
+        """Will always be overriden by the implementer.
+
+        Args:
+            sf (SpiderFoot): SpiderFoot object
+            userOpts (dict): TBD
+        """
         pass
 
     def enrichTarget(self, target):
-        """Rarely used, only in special cases where a module can find
-        aliases for a target."""
+        """Find aliases for a target.
+
+        Note: rarely used in special cases
+
+        Args:
+            target (str): TBD
+        """
         pass
 
     def setTarget(self, target):
@@ -78,6 +92,9 @@ def setTarget(self, target):
 
         Args:
             target (SpiderFootTarget): target
+
+        Raises:
+            TypeError: target argument was invalid type
         """
         from spiderfoot import SpiderFootTarget
 
@@ -99,7 +116,10 @@ def setScanId(self, scanId):
         """Set the scan ID.
 
         Args:
-            id (str): scan ID
+            scanId (str): scan instance ID
+
+        Raises:
+            TypeError: scanId argument was invalid type
         """
         if not isinstance(scanId, str):
             raise TypeError(f"scanId is {type(scanId)}; expected str")
@@ -111,6 +131,9 @@ def getScanId(self):
 
         Returns:
             str: scan ID
+
+        Raises:
+            TypeError: Module called getScanId() but no scanId is set.
         """
         if not self.__scanId__:
             raise TypeError("Module called getScanId() but no scanId is set.")
@@ -118,7 +141,14 @@ def getScanId(self):
         return self.__scanId__
 
     def getTarget(self):
-        """Gets the current target this module is acting against."""
+        """Gets the current target this module is acting against.
+
+        Returns:
+            str: current target
+
+        Raises:
+            TypeError: Module called getTarget() but no target is set.
+        """
         if not self._currentTarget:
             raise TypeError("Module called getTarget() but no target is set.")
 
@@ -160,6 +190,12 @@ def notifyListeners(self, sfEvent):
 
         Args:
             sfEvent (SpiderFootEvent): event
+
+        Returns:
+            None
+
+        Raises:
+            TypeError: sfEvent argument was invalid type
         """
         from spiderfoot import SpiderFootEvent
 
diff --git a/spiderfoot/target.py b/spiderfoot/target.py
index 73a5b84dea..5af9d48dcb 100644
--- a/spiderfoot/target.py
+++ b/spiderfoot/target.py
@@ -24,11 +24,6 @@ def __init__(self, targetValue, typeName):
         Args:
             targetValue (str): target value
             typeName (str): target type
-
-        Raises:
-            TypeError: targetValue type was invalid
-            ValueError: targetValue value was empty
-            ValueError: typeName value was an invalid target type
         """
 
         self.targetType = typeName
@@ -106,6 +101,9 @@ def setAlias(self, value, typeName):
     def _getEquivalents(self, typeName):
         """TBD
 
+        Args:
+            typeName (str): event type
+
         Returns:
             list: target aliases
         """
diff --git a/test/unit/test_spiderfoot_module_loading.py b/test/unit/test_spiderfoot_module_loading.py
index b2605ef425..577683ba53 100644
--- a/test/unit/test_spiderfoot_module_loading.py
+++ b/test/unit/test_spiderfoot_module_loading.py
@@ -33,9 +33,6 @@ class TestSpiderFootModuleLoading(unittest.TestCase):
     }
 
     def test_module_loading(self):
-        """
-        Test module loading
-        """
         sf = SpiderFoot(self.default_options)
 
         # Go through each module in the modules directory with a .py extension