Bump pylint from 2.5.3 to 2.6.0

.gitignore

@@ -1,4 +1,5 @@
 *.py[cod]
+venv/*
 
 # C extensions
 *.so

requirements-lint.txt

@@ -1,7 +1,7 @@
 # linters
 pycodestyle==2.6.0
 pydocstyle==5.1.0
-pylint==2.5.3
+pylint==2.6.0
 pygments
 pyroma==2.6
 -r requirements-test.txt

src/pytest_elasticsearch/executor.py

@@ -97,10 +97,10 @@ def version(self):
                         version['major'], version['minor'], version['patch']
                     ])
                 )
-            except OSError:
+            except OSError as exc:
                 raise RuntimeError(
                     "'%s' does not point to elasticsearch." % self.executable
-                )
+                ) from exc
         return self._version
 
     def _exec_command(self):

src/pytest_elasticsearch/port.py

@@ -26,7 +26,7 @@ class InvalidPortsDefinition(ValueError):
 
     def __init__(self, ports):
         """Construct InvalidPortsDefinition exception."""
-        super(InvalidPortsDefinition, self).__init__(
+        super().__init__(
             'Unknown format of ports: {0}.\n'.format(ports) + (
                 'You should provide a ports range "[(4000,5000)]"'
                 'or "(4000,5000)" or a comma-separated ports set'
@@ -74,8 +74,8 @@ def get_port(ports):
         nums = set(filter_by_type(ports, int))
         sets = set(chain(*filter_by_type(ports, (set, frozenset))))
         ports_set = ports_set.union(ranges, sets, nums)
-    except ValueError:
-        raise InvalidPortsDefinition
+    except ValueError as exc:
+        raise InvalidPortsDefinition from exc
 
     return port_for.select_random(ports_set)