diff --git a/linkcheck/checker/ftpurl.py b/linkcheck/checker/ftpurl.py
index 29f7cd13..2d6844a3 100644
--- a/linkcheck/checker/ftpurl.py
+++ b/linkcheck/checker/ftpurl.py
@@ -88,7 +88,6 @@ class FtpUrl(internpaturl.InternPatternUrl, proxysupport.ProxySupport):
                 # note that the info may change every time a user logs in,
                 # so don't add it to the url_data info.
                 log.debug(LOG_CHECK, "FTP info %s", info)
-                pass
             else:
                 raise LinkCheckerError(_("Got no answer from FTP server"))
         except EOFError as msg:
@@ -103,7 +102,6 @@ class FtpUrl(internpaturl.InternPatternUrl, proxysupport.ProxySupport):
             features = self.url_connection.sendcmd("FEAT")
         except ftplib.error_perm as msg:
             log.debug(LOG_CHECK, "Ignoring error when getting FTP features: %s" % msg)
-            pass
         else:
             log.debug(LOG_CHECK, "FTP features %s", features)
             if " UTF-8" in features.splitlines():
diff --git a/linkcheck/checker/itmsservicesurl.py b/linkcheck/checker/itmsservicesurl.py
index 982c8acb..deafd349 100644
--- a/linkcheck/checker/itmsservicesurl.py
+++ b/linkcheck/checker/itmsservicesurl.py
@@ -33,7 +33,6 @@ class ItmsServicesUrl(urlbase.UrlBase):
     def local_check(self):
         """Disable content checks."""
         log.debug(LOG_CHECK, "Checking %s", self)
-        pass
 
     def check_content(self):
         """Allow recursion to check the url CGI param."""
diff --git a/linkcheck/checker/mailtourl.py b/linkcheck/checker/mailtourl.py
index 512935b9..e29150e9 100644
--- a/linkcheck/checker/mailtourl.py
+++ b/linkcheck/checker/mailtourl.py
@@ -363,7 +363,6 @@ class MailtoUrl(urlbase.UrlBase):
         log.debug(LOG_CHECK, "found %d MX mailhosts:", len(answers))
         for preference, host in mxdata:
             log.debug(LOG_CHECK, "MX host %r, preference %d", host, preference)
-            pass
         self.set_result(_("Valid mail address syntax"))
 
     def set_cache_url(self):
diff --git a/linkcheck/configuration/__init__.py b/linkcheck/configuration/__init__.py
index a4093b7b..a08f9d9a 100644
--- a/linkcheck/configuration/__init__.py
+++ b/linkcheck/configuration/__init__.py
@@ -470,7 +470,6 @@ def get_gnome_proxy(protocol="HTTP"):
             return "%s:%d" % (host, port)
     except Exception as msg:
         log.debug(LOG_CHECK, "error getting %s proxy from GNOME: %s", (protocol, msg))
-        pass
     return None
 
 
@@ -481,7 +480,6 @@ def get_kde_http_proxy():
         return data.get("http_proxy")
     except Exception as msg:
         log.debug(LOG_CHECK, "error getting HTTP proxy from KDE: %s", msg)
-        pass
 
 
 def get_kde_ftp_proxy():
@@ -491,7 +489,6 @@ def get_kde_ftp_proxy():
         return data.get("ftp_proxy")
     except Exception as msg:
         log.debug(LOG_CHECK, "error getting FTP proxy from KDE: %s", msg)
-        pass
 
 
 # The following KDE functions are largely ported and ajusted from
diff --git a/linkcheck/robotparser2.py b/linkcheck/robotparser2.py
index 1a5af387..1d827d76 100644
--- a/linkcheck/robotparser2.py
+++ b/linkcheck/robotparser2.py
@@ -197,7 +197,6 @@ class RobotFileParser:
                             self.url,
                             linenumber,
                         )
-                        pass
                     else:
                         entry.rulelines.append(RuleLine(line[1], False))
                         state = 2
@@ -209,7 +208,6 @@ class RobotFileParser:
                             self.url,
                             linenumber,
                         )
-                        pass
                     else:
                         entry.rulelines.append(RuleLine(line[1], True))
                         state = 2
@@ -221,7 +219,6 @@ class RobotFileParser:
                             self.url,
                             linenumber,
                         )
-                        pass
                     else:
                         try:
                             entry.crawldelay = max(0, int(line[1]))
@@ -234,7 +231,6 @@ class RobotFileParser:
                                 linenumber,
                                 line[1],
                             )
-                            pass
                 elif line[0] == "sitemap":
                     # Note that sitemap URLs must be absolute according to
                     # http://www.sitemaps.org/protocol.html#submit_robots
@@ -248,7 +244,6 @@ class RobotFileParser:
                         linenumber,
                         line[0],
                     )
-                    pass
             else:
                 log.debug(
                     LOG_CHECK,
@@ -257,7 +252,6 @@ class RobotFileParser:
                     linenumber,
                     line,
                 )
-                pass
         if state in (1, 2):
             self.entries.append(entry)
         self.modified()