Enable pylint rules and fix exposed bugs. (#47219)

* Resolve invalid-unary-operand-type.

* Resolve raising-format-tuple.

* Resolve stop-iteration-return.

* Use disable comment instead of fixing logic.

The affected line in _find_address_range will only fail on Python 3.7
and later if the function is called with an empty address list. As an
internal method it is never called in this way, making it a non-issue
for use via public methods.

Using a comment to disable the rule in favor of an ignore.txt entry
since there are no plans to change the logic in the code itself. This
will also prevent any potential future issues being added in other
parts of the code when updating it based on upstream changes.

lib/ansible/module_utils/compat/ipaddress.py

@@ -346,7 +346,7 @@ def _find_address_range(addresses):
 
     """
     it = iter(addresses)
-    first = last = next(it)
+    first = last = next(it)  # pylint: disable=stop-iteration-return
     for ip in it:
         if ip._ip != last._ip + 1:
             yield first, last

lib/ansible/module_utils/pycompat24.py

@@ -81,7 +81,7 @@ except ImportError:
                 if node.name in _safe_names:
                     return _safe_names[node.name]
             elif isinstance(node, ast.UnarySub):
-                return -_convert(node.expr)
+                return -_convert(node.expr)  # pylint: disable=invalid-unary-operand-type
             raise ValueError('malformed string')
         return _convert(node_or_string)
 

lib/ansible/modules/clustering/consul_kv.py

@@ -233,7 +233,7 @@ def set_value(module):
     value = module.params.get('value')
 
     if value is NOT_SET:
-        raise AssertionError('Cannot set value of "%s" to `NOT_SET`', (key, ))
+        raise AssertionError('Cannot set value of "%s" to `NOT_SET`' % key)
 
     index, changed = _has_value_changed(consul_api, key, value)
 

lib/ansible/modules/network/cnos/cnos_backup.py

@@ -213,7 +213,7 @@ def doConfigBackUp(module, prompt, answer):
     elif(protocol == "tftp"):
         command = "copy " + configType + " " + protocol + " " + protocol
         command = command + "://" + server + "/" + confPath
-        command = command + + " vrf management\n"
+        command = command + " vrf management\n"
         # cnos.debugOutput(command)
         tftp_cmd = [{'command': command, 'prompt': None, 'answer': None}]
         cmd.extend(tftp_cmd)

lib/ansible/modules/network/cnos/cnos_image.py

@@ -175,7 +175,7 @@ def doImageDownload(module, prompt, answer):
     elif(protocol == "tftp"):
         command = "copy " + protocol + " " + protocol + "://" + server
         command = command + "/" + imgPath + " system-image " + imgType
-        command = command + + " vrf management"
+        command = command + " vrf management"
         prompt = ['Confirm download operation',
                   'Do you want to change that to the standby image']
         answer = ['y', 'y']

lib/ansible/modules/packaging/os/apt_repository.py

@@ -184,7 +184,6 @@ class SourcesList(object):
             for n, valid, enabled, source, comment in sources:
                 if valid:
                     yield file, n, enabled, source, comment
-        raise StopIteration
 
     def _expand_path(self, filename):
         if '/' in filename:

lib/ansible/modules/storage/netapp/netapp_e_storagepool.py

@@ -145,7 +145,10 @@ class GroupBy(object):
     def _grouper(self, tgtkey):
         while self.currkey == tgtkey:
             yield self.currvalue
+            try:
                 self.currvalue = next(self.it)  # Exit on StopIteration
+            except StopIteration:
+                return
             self.currkey = self.keyfunc(self.currvalue)
 
 

test/sanity/pylint/config/default

@@ -42,7 +42,6 @@ disable=
     invalid-envvar-default,
     invalid-name,
     invalid-sequence-index,
-    invalid-unary-operand-type,
     keyword-arg-before-vararg,
     len-as-condition,
     line-too-long,
@@ -66,7 +65,6 @@ disable=
     pointless-string-statement,
     possibly-unused-variable,
     protected-access,
-    raising-format-tuple,
     redefined-argument-from-local,
     redefined-builtin,
     redefined-outer-name,
@@ -75,7 +73,6 @@ disable=
     relative-import,
     signature-differs,
     simplifiable-if-statement,
-    stop-iteration-return,
     subprocess-popen-preexec-fn,
     super-init-not-called,
     superfluous-parens,