diff --git a/.arclint b/.arclint
--- a/.arclint
+++ b/.arclint
@@ -26,7 +26,7 @@
             "include": "(\\.py$)",
             "flags": [
                 "--select=E,W,F",
-                "--ignore=E501,E704,E722,W503,W504"
+                "--ignore=E501,E704,W503,W504"
             ]
         },
         "lint-format-strings": {
diff --git a/contrib/devtools/optimize-pngs.py b/contrib/devtools/optimize-pngs.py
--- a/contrib/devtools/optimize-pngs.py
+++ b/contrib/devtools/optimize-pngs.py
@@ -51,7 +51,7 @@
             try:
                 subprocess.call([pngcrush, "-brute", "-ow", "-rem", "gAMA", "-rem", "cHRM", "-rem", "iCCP", "-rem", "sRGB",
                                  "-rem", "alla", "-rem", "text", file_path], stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
-            except:
+            except OSError:
                 print("pngcrush is not installed, aborting...")
                 sys.exit(0)
 
diff --git a/contrib/seeds/makeseeds.py b/contrib/seeds/makeseeds.py
--- a/contrib/seeds/makeseeds.py
+++ b/contrib/seeds/makeseeds.py
@@ -166,7 +166,7 @@
                 continue
             asn_count[asn] += 1
             result.append(ip)
-        except:
+        except Exception:
             sys.stderr.write(
                 'ERR: Could not resolve ASN for "' + ip['ip'] + '"\n')
 
diff --git a/test/functional/feature_dbcrash.py b/test/functional/feature_dbcrash.py
--- a/test/functional/feature_dbcrash.py
+++ b/test/functional/feature_dbcrash.py
@@ -96,7 +96,7 @@
                 utxo_hash = self.nodes[node_index].gettxoutsetinfo()[
                     'hash_serialized']
                 return utxo_hash
-            except:
+            except Exception:
                 # An exception here should mean the node is about to crash.
                 # If bitcoind exits, then try again.  wait_for_node_exit()
                 # should raise an exception if bitcoind doesn't exit.
diff --git a/test/functional/p2p_node_network_limited.py b/test/functional/p2p_node_network_limited.py
--- a/test/functional/p2p_node_network_limited.py
+++ b/test/functional/p2p_node_network_limited.py
@@ -117,7 +117,7 @@
         connect_nodes_bi(self.nodes[0], self.nodes[2])
         try:
             sync_blocks([self.nodes[0], self.nodes[2]], timeout=5)
-        except:
+        except Exception:
             pass
         # node2 must remain at heigh 0
         assert_equal(self.nodes[2].getblockheader(
diff --git a/test/functional/rpc_preciousblock.py b/test/functional/rpc_preciousblock.py
--- a/test/functional/rpc_preciousblock.py
+++ b/test/functional/rpc_preciousblock.py
@@ -19,7 +19,7 @@
         try:
             assert len(node_dest.getblock(blockhash, False)) > 0
             break
-        except:
+        except Exception:
             blocks_to_copy.append(blockhash)
             blockhash = node_src.getblockheader(
                 blockhash, True)['previousblockhash']
diff --git a/test/functional/test_framework/messages.py b/test/functional/test_framework/messages.py
--- a/test/functional/test_framework/messages.py
+++ b/test/functional/test_framework/messages.py
@@ -852,7 +852,7 @@
             # Relay field is optional for version 70001 onwards
             try:
                 self.nRelay = struct.unpack("<b", f.read(1))[0]
-            except:
+            except Exception:
                 self.nRelay = 0
         else:
             self.nRelay = 0
diff --git a/test/functional/test_framework/mininode.py b/test/functional/test_framework/mininode.py
--- a/test/functional/test_framework/mininode.py
+++ b/test/functional/test_framework/mininode.py
@@ -331,7 +331,7 @@
                 self.message_count[command] += 1
                 self.last_message[command] = message
                 getattr(self, 'on_' + command)(message)
-            except:
+            except Exception:
                 print("ERROR delivering {} ({})".format(
                     repr(message), sys.exc_info()[0]))
                 raise
diff --git a/test/functional/test_framework/test_framework.py b/test/functional/test_framework/test_framework.py
--- a/test/functional/test_framework/test_framework.py
+++ b/test/functional/test_framework/test_framework.py
@@ -332,7 +332,7 @@
                 node.start(extra_args[i], *args, **kwargs)
             for node in self.nodes:
                 node.wait_for_rpc_connection()
-        except:
+        except BaseException:
             # If one node failed to start, stop the others
             self.stop_nodes()
             raise
diff --git a/test/util/bitcoin-util-test.py b/test/util/bitcoin-util-test.py
--- a/test/util/bitcoin-util-test.py
+++ b/test/util/bitcoin-util-test.py
@@ -54,10 +54,11 @@
     for testObj in input_data:
         try:
             bctest(testDir, testObj, buildenv)
-            logging.info("PASSED: " + testObj["description"])
-        except:
+        except Exception:
             logging.info("FAILED: " + testObj["description"])
             failed_testcases.append(testObj["description"])
+        else:
+            logging.info("PASSED: " + testObj["description"])
 
     if failed_testcases:
         error_message = "FAILED_TESTCASES:\n"
@@ -99,7 +100,7 @@
         try:
             outputData = open(os.path.join(testDir, outputFn),
                               encoding="utf8").read()
-        except:
+        except OSError:
             logging.error("Output file " + outputFn + " can not be opened")
             raise
         if not outputData: