Fix flake8 warnings

tests/benchmark.py

@@ -36,7 +36,7 @@ def bitcoind():
 
     try:
         bitcoind.rpc.stop()
-    except:
+    except Exception:
         bitcoind.proc.kill()
     bitcoind.proc.wait()
 

tests/test_lightningd.py

@@ -46,7 +46,7 @@ def setupBitcoind(directory):
 
     try:
         bitcoind.start()
-    except:
+    except Exception:
         teardown_bitcoind()
         raise
 
@@ -86,7 +86,7 @@ def teardown_bitcoind():
     global bitcoind
     try:
         bitcoind.rpc.stop()
-    except:
+    except Exception:
         bitcoind.proc.kill()
     bitcoind.proc.wait()
 
@@ -154,7 +154,7 @@ class NodeFactory(object):
 
         try:
             node.daemon.start()
-        except:
+        except Exception:
             node.daemon.stop()
             raise
 
@@ -173,12 +173,12 @@ class NodeFactory(object):
                 try:
                     # This also puts leaks in log.
                     leaks = self.nodes[i].rpc.dev_memleak()['leaks']
-                except:
+                except Exception:
                     pass
 
             try:
                 self.nodes[i].stop()
-            except:
+            except Exception:
                 if expected_successes[i]:
                     unexpected_fail = True
 
@@ -223,7 +223,7 @@ class BaseLightningDTests(unittest.TestCase):
             crashlog = os.path.join(node.daemon.lightning_dir, 'crash.log')
             with open(crashlog, 'r') as f:
                 return f.readlines(), crashlog
-        except:
+        except Exception:
             return None, None
 
     def printCrashLog(self, node):
@@ -3691,7 +3691,7 @@ class LightningDTests(BaseLightningDTests):
                                            .format(l1.daemon.lightning_dir),
                                            '-J', '-o',
                                            'sendpay']).decode('utf-8')
-        except:
+        except Exception:
             pass
 
     @unittest.skipIf(not DEVELOPER, "needs DEVELOPER=1")

tests/utils.py

@@ -301,7 +301,7 @@ class LightningNode(object):
         def call_connect():
             try:
                 self.rpc.connect('127.0.0.1', remote_node.daemon.port, tx['hex'], async=False)
-            except:
+            except Exception:
                 pass
         t = threading.Thread(target=call_connect)
         t.daemon = True
@@ -384,7 +384,7 @@ class LightningNode(object):
         try:
             # May fail if the process already died
             self.rpc.stop()
-        except:
+        except Exception:
             pass
 
         rc = self.daemon.wait(timeout)