Merge pull request #10078 from danieleades/refactor/unused-loop-control-variables

address some unused loop control variables

doc/development/tutorials/examples/recipe.py

@@ -87,7 +87,7 @@ class RecipeIndex(Index):
         # first letter of the recipe as a key to group thing
         #
         # name, subtype, docname, anchor, extra, qualifier, description
-        for name, dispname, typ, docname, anchor, _ in recipes:
+        for _name, dispname, typ, docname, anchor, _priority in recipes:
             content[dispname[0].lower()].append(
                 (dispname, 0, docname, anchor, docname, '', typ))
 

sphinx/addnodes.py

@@ -92,7 +92,7 @@ class toctree(nodes.General, nodes.Element, translatable):
     def preserve_original_messages(self) -> None:
         # toctree entries
         rawentries = self.setdefault('rawentries', [])
-        for title, docname in self['entries']:
+        for title, _docname in self['entries']:
             if title:
                 rawentries.append(title)
 

sphinx/builders/__init__.py

@@ -562,7 +562,7 @@ class Builder:
         for chunk in status_iterator(chunks, __('writing output... '), "darkgreen",
                                      len(chunks), self.app.verbosity):
             arg = []
-            for i, docname in enumerate(chunk):
+            for docname in chunk:
                 doctree = self.env.get_and_resolve_doctree(docname, self)
                 self.write_doc_serialized(docname, doctree)
                 arg.append((docname, doctree))

sphinx/builders/_epub_base.py

@@ -377,14 +377,14 @@ class EpubBuilder(StandaloneHTMLBuilder):
         """Fix href attributes for genindex pages."""
         # XXX: modifies tree inline
         # Logic modeled from themes/basic/genindex.html
-        for key, columns in tree:
+        for _key, columns in tree:
-            for entryname, (links, subitems, key_) in columns:
+            for _entryname, (links, subitems, _key) in columns:
                 for (i, (ismain, link)) in enumerate(links):
                     m = self.refuri_re.match(link)
                     if m:
                         links[i] = (ismain,
                                     self.fix_fragment(m.group(1), m.group(2)))
-                for subentryname, subentrylinks in subitems:
+                for _subentryname, subentrylinks in subitems:
                     for (i, (ismain, link)) in enumerate(subentrylinks):
                         m = self.refuri_re.match(link)
                         if m:

sphinx/builders/gettext.py

@@ -157,7 +157,7 @@ class I18nBuilder(Builder):
         if 'index' in self.env.config.gettext_additional_targets:
             # Extract translatable messages from index entries.
             for node, entries in traverse_translatable_index(doctree):
-                for typ, msg, tid, main, key_ in entries:
+                for typ, msg, _tid, _main, _key in entries:
                     for m in split_index_msg(typ, msg):
                         if typ == 'pair' and m in pairindextypes.values():
                             # avoid built-in translated message was incorporated
@@ -227,7 +227,7 @@ class MessageCatalogBuilder(I18nBuilder):
         template_files = set()
         for template_path in self.config.templates_path:
             tmpl_abs_path = path.join(self.app.srcdir, template_path)
-            for dirpath, dirs, files in walk(tmpl_abs_path):
+            for dirpath, _dirs, files in walk(tmpl_abs_path):
                 for fn in files:
                     if fn.endswith('.html'):
                         filename = canon_path(path.join(dirpath, fn))
@@ -247,7 +247,7 @@ class MessageCatalogBuilder(I18nBuilder):
             try:
                 with open(template, encoding='utf-8') as f:
                     context = f.read()
-                for line, meth, msg in extract_translations(context):
+                for line, _meth, msg in extract_translations(context):
                     origin = MsgOrigin(template, line)
                     self.catalogs['sphinx'].add(msg, origin)
             except Exception as exc:

sphinx/builders/html/__init__.py

@@ -486,7 +486,7 @@ class StandaloneHTMLBuilder(Builder):
         rellinks: List[Tuple[str, str, str, str]] = []
         if self.use_index:
             rellinks.append(('genindex', _('General Index'), 'I', _('index')))
-        for indexname, indexcls, content, collapse in self.domain_indices:
+        for indexname, indexcls, _content, _collapse in self.domain_indices:
             # if it has a short name
             if indexcls.shortname:
                 rellinks.append((indexname, indexcls.localname,

sphinx/builders/linkcheck.py

@@ -339,7 +339,7 @@ class HyperlinkAvailabilityChecker:
             self.wqueue = PriorityQueue()
 
     def invoke_threads(self) -> None:
-        for i in range(self.config.linkcheck_workers):
+        for _i in range(self.config.linkcheck_workers):
             thread = HyperlinkAvailabilityCheckWorker(self.env, self.config,
                                                       self.rqueue, self.wqueue,
                                                       self.rate_limits, self.builder)
@@ -348,7 +348,7 @@ class HyperlinkAvailabilityChecker:
 
     def shutdown_threads(self) -> None:
         self.wqueue.join()
-        for worker in self.workers:
+        for _worker in self.workers:
             self.wqueue.put(CheckRequest(CHECK_IMMEDIATELY, None), False)
 
     def check(self, hyperlinks: Dict[str, Hyperlink]) -> Generator[CheckResult, None, None]:

sphinx/directives/__init__.py

@@ -176,7 +176,7 @@ class ObjectDescription(SphinxDirective, Generic[T]):
 
         self.names: List[T] = []
         signatures = self.get_signatures()
-        for i, sig in enumerate(signatures):
+        for sig in signatures:
             # add a signature node for each signature in the current unit
             # and add a reference target for it
             signode = addnodes.desc_signature(sig, '')

sphinx/directives/other.py

@@ -342,7 +342,7 @@ class Only(SphinxDirective):
             # be placed in the doctree.
             n_sects_to_raise = current_depth - nested_depth + 1
             parent = cast(nodes.Element, self.state.parent)
-            for i in range(n_sects_to_raise):
+            for _i in range(n_sects_to_raise):
                 if parent.parent:
                     parent = parent.parent
             parent.append(node)

sphinx/domains/c.py

@@ -3654,8 +3654,7 @@ class CAliasObject(ObjectDescription):
                            " When skipping the root declaration,"
                            " need 'maxdepth' 0 for infinite or at least 2.",
                            location=self.get_location())
-        signatures = self.get_signatures()
+        for sig in self.get_signatures():
-        for i, sig in enumerate(signatures):
             node.append(AliasNode(sig, aliasOptions, self.state.document, env=self.env))
         return [node]
 

sphinx/domains/changeset.py

@@ -130,7 +130,7 @@ class ChangeSetDomain(Domain):
         self.changesets.setdefault(version, []).append(changeset)
 
     def clear_doc(self, docname: str) -> None:
-        for version, changes in self.changesets.items():
+        for changes in self.changesets.values():
             for changeset in changes[:]:
                 if changeset.docname == docname:
                     changes.remove(changeset)

sphinx/domains/citation.py

@@ -48,7 +48,7 @@ class CitationDomain(Domain):
         return self.data.setdefault('citation_refs', {})
 
     def clear_doc(self, docname: str) -> None:
-        for key, (fn, _l, lineno) in list(self.citations.items()):
+        for key, (fn, _l, _lineno) in list(self.citations.items()):
             if fn == docname:
                 del self.citations[key]
         for key, docnames in list(self.citation_refs.items()):
@@ -81,7 +81,7 @@ class CitationDomain(Domain):
         docnames.add(self.env.docname)
 
     def check_consistency(self) -> None:
-        for name, (docname, labelid, lineno) in self.citations.items():
+        for name, (docname, _labelid, lineno) in self.citations.items():
             if name not in self.citation_refs:
                 logger.warning(__('Citation [%s] is not referenced.'), name,
                                type='ref', subtype='citation', location=(docname, lineno))

sphinx/domains/cpp.py

@@ -6873,7 +6873,7 @@ class DefinitionParser(BaseParser):
                 self.warn(msg)
 
             newTemplates: List[Union[ASTTemplateParams, ASTTemplateIntroduction]] = []
-            for i in range(numExtra):
+            for _i in range(numExtra):
                 newTemplates.append(ASTTemplateParams([]))
             if templatePrefix and not isMemberInstantiation:
                 newTemplates.extend(templatePrefix.templates)
@@ -7579,7 +7579,7 @@ class CPPAliasObject(ObjectDescription):
                            " need 'maxdepth' 0 for infinite or at least 2.",
                            location=self.get_location())
         signatures = self.get_signatures()
-        for i, sig in enumerate(signatures):
+        for sig in signatures:
             node.append(AliasNode(sig, aliasOptions, env=self.env))
 
         contentnode = addnodes.desc_content()

sphinx/domains/javascript.py

@@ -385,10 +385,10 @@ class JavaScriptDomain(Domain):
         self.modules[modname] = (self.env.docname, node_id)
 
     def clear_doc(self, docname: str) -> None:
-        for fullname, (pkg_docname, node_id, _l) in list(self.objects.items()):
+        for fullname, (pkg_docname, _node_id, _l) in list(self.objects.items()):
             if pkg_docname == docname:
                 del self.objects[fullname]
-        for modname, (pkg_docname, node_id) in list(self.modules.items()):
+        for modname, (pkg_docname, _node_id) in list(self.modules.items()):
             if pkg_docname == docname:
                 del self.modules[modname]
 

sphinx/domains/math.py

@@ -81,7 +81,7 @@ class MathDomain(Domain):
         self.data['has_equations'][docname] = any(document.findall(math_node))
 
     def clear_doc(self, docname: str) -> None:
-        for equation_id, (doc, eqno) in list(self.equations.items()):
+        for equation_id, (doc, _eqno) in list(self.equations.items()):
             if doc == docname:
                 del self.equations[equation_id]
 

sphinx/domains/rst.py

@@ -235,7 +235,7 @@ class ReSTDomain(Domain):
         self.objects[objtype, name] = (self.env.docname, node_id)
 
     def clear_doc(self, docname: str) -> None:
-        for (typ, name), (doc, node_id) in list(self.objects.items()):
+        for (typ, name), (doc, _node_id) in list(self.objects.items()):
             if doc == docname:
                 del self.objects[typ, name]
 

sphinx/environment/adapters/indexentries.py

@@ -55,7 +55,7 @@ class IndexEntries:
         domain = cast(IndexDomain, self.env.get_domain('index'))
         for fn, entries in domain.entries.items():
             # new entry types must be listed in directives/other.py!
-            for type, value, tid, main, index_key in entries:
+            for type, value, tid, main, index_key in entries:  # noqa: B007
                 try:
                     if type == 'single':
                         try:

sphinx/environment/collectors/toctree.py

@@ -177,7 +177,7 @@ class TocTreeCollector(EnvironmentCollector):
         def _walk_toctree(toctreenode: addnodes.toctree, depth: int) -> None:
             if depth == 0:
                 return
-            for (title, ref) in toctreenode['entries']:
+            for (_title, ref) in toctreenode['entries']:
                 if url_re.match(ref) or ref == 'self':
                     # don't mess with those
                     continue
@@ -261,7 +261,7 @@ class TocTreeCollector(EnvironmentCollector):
                     else:
                         _walk_doctree(docname, subnode, secnum)
                 elif isinstance(subnode, addnodes.toctree):
-                    for title, subdocname in subnode['entries']:
+                    for _title, subdocname in subnode['entries']:
                         if url_re.match(subdocname) or subdocname == 'self':
                             # don't mess with those
                             continue

sphinx/ext/apidoc.py

@@ -227,7 +227,7 @@ def walk(rootpath: str, excludes: List[str], opts: Any
 
 def has_child_module(rootpath: str, excludes: List[str], opts: Any) -> bool:
     """Check the given directory contains child module/s (at least one)."""
-    for root, subs, files in walk(rootpath, excludes, opts):
+    for _root, _subs, files in walk(rootpath, excludes, opts):
         if files:
             return True
 

sphinx/ext/autosummary/__init__.py

@@ -119,7 +119,7 @@ def process_autosummary_toc(app: Sphinx, doctree: nodes.document) -> None:
 
     def crawl_toc(node: Element, depth: int = 1) -> None:
         crawled[node] = True
-        for j, subnode in enumerate(node):
+        for subnode in node:
             try:
                 if (isinstance(subnode, autosummary_toc) and
                         isinstance(subnode[0], addnodes.toctree)):
@@ -271,7 +271,7 @@ class Autosummary(SphinxDirective):
             docnames = []
             excluded = Matcher(self.config.exclude_patterns)
             filename_map = self.config.autosummary_filename_map
-            for name, sig, summary, real_name in items:
+            for _name, _sig, _summary, real_name in items:
                 real_name = filename_map.get(real_name, real_name)
                 docname = posixpath.join(tree_prefix, real_name)
                 docname = posixpath.normpath(posixpath.join(dirname, docname))
@@ -610,7 +610,7 @@ def limited_join(sep: str, items: List[str], max_chars: int = 30,
 
     n_chars = 0
     n_items = 0
-    for j, item in enumerate(items):
+    for item in items:
         n_chars += len(item) + len(sep)
         if n_chars < max_chars - len(overflow_marker):
             n_items += 1

sphinx/ext/autosummary/generate.py

@@ -318,7 +318,7 @@ def generate_autosummary_content(name: str, obj: Any, parent: Any,
 
     def get_modules(obj: Any) -> Tuple[List[str], List[str]]:
         items: List[str] = []
-        for _, modname, ispkg in pkgutil.iter_modules(obj.__path__):
+        for _, modname, _ispkg in pkgutil.iter_modules(obj.__path__):
             fullname = name + '.' + modname
             try:
                 module = import_module(fullname)

sphinx/ext/extlinks.py

@@ -68,7 +68,7 @@ class ExternalLinksChecker(SphinxPostTransform):
 
         uri = refnode['refuri']
 
-        for alias, (base_uri, caption) in self.app.config.extlinks.items():
+        for alias, (base_uri, _caption) in self.app.config.extlinks.items():
             uri_pattern = re.compile(base_uri.replace('%s', '(?P<value>.+)'))
             match = uri_pattern.match(uri)
             if match and match.groupdict().get('value'):

sphinx/ext/imgmath.py

@@ -65,7 +65,7 @@ def read_svg_depth(filename: str) -> int:
     """Read the depth from comment at last line of SVG file
     """
     with open(filename) as f:
-        for line in f:
+        for line in f:  # noqa: B007
             pass
         # Only last line is checked
         matched = depthsvgcomment_re.match(line)

sphinx/ext/napoleon/__init__.py

@@ -288,7 +288,7 @@ class Config:
     }
 
     def __init__(self, **settings: Any) -> None:
-        for name, (default, rebuild) in self._config_values.items():
+        for name, (default, _rebuild) in self._config_values.items():
             setattr(self, name, default)
         for name, value in settings.items():
             setattr(self, name, value)

sphinx/setup_command.py

@@ -112,7 +112,7 @@ class BuildDoc(Command):
         for guess in ('doc', 'docs'):
             if not os.path.isdir(guess):
                 continue
-            for root, dirnames, filenames in os.walk(guess):
+            for root, _dirnames, filenames in os.walk(guess):
                 if 'conf.py' in filenames:
                     return root
         return os.curdir

sphinx/testing/path.py

@@ -115,7 +115,7 @@ class path(str):
             # as well.  To avoid failures when adding additional files/directories
             # to the destination tree, ensure destination directories are not marked
             # read-only.
-            for root, dirs, files in os.walk(destination):
+            for root, _dirs, files in os.walk(destination):
                 os.chmod(root, 0o755 & ~UMASK)
                 for name in files:
                     os.chmod(os.path.join(root, name), 0o644 & ~UMASK)

sphinx/testing/util.py

@@ -178,7 +178,7 @@ _unicode_literals_re = re.compile(r'u(".*?")|u(\'.*?\')')
 
 
 def find_files(root: str, suffix: bool = None) -> Generator[str, None, None]:
-    for dirpath, dirs, files in os.walk(root, followlinks=True):
+    for dirpath, _dirs, files in os.walk(root, followlinks=True):
         dirpath = path(dirpath)
         for f in [f for f in files if not suffix or f.endswith(suffix)]:  # type: ignore
             fpath = dirpath / f

sphinx/transforms/i18n.py

@@ -462,7 +462,7 @@ class Locale(SphinxTransform):
             # Extract and translate messages for index entries.
             for node, entries in traverse_translatable_index(self.document):
                 new_entries: List[Tuple[str, str, str, str, str]] = []
-                for type, msg, tid, main, key_ in entries:
+                for type, msg, tid, main, _key in entries:
                     msg_parts = split_index_msg(type, msg)
                     msgstr_parts = []
                     for part in msg_parts:

sphinx/util/__init__.py

@@ -88,7 +88,7 @@ def get_matching_files(dirname: str,
 
         dirs[:] = sorted(dirs[i] for (i, _) in qdirs)
 
-        for i, filename in sorted(qfiles):
+        for _i, filename in sorted(qfiles):
             yield filename
 
 
@@ -132,7 +132,7 @@ class FilenameUniqDict(dict):
                 self._existing.discard(unique)
 
     def merge_other(self, docnames: Set[str], other: Dict[str, Tuple[Set[str], Any]]) -> None:
-        for filename, (docs, unique) in other.items():
+        for filename, (docs, _unique) in other.items():
             for doc in docs & set(docnames):
                 self.add_file(doc, filename)
 
@@ -190,13 +190,13 @@ class DownloadFiles(dict):
         return self[filename][1]
 
     def purge_doc(self, docname: str) -> None:
-        for filename, (docs, dest) in list(self.items()):
+        for filename, (docs, _dest) in list(self.items()):
             docs.discard(docname)
             if not docs:
                 del self[filename]
 
     def merge_other(self, docnames: Set[str], other: Dict[str, Tuple[Set[str], Any]]) -> None:
-        for filename, (docs, dest) in other.items():
+        for filename, (docs, _dest) in other.items():
             for docname in docs & set(docnames):
                 self.add_file(docname, filename)
 
@@ -441,7 +441,7 @@ def split_full_qualified_name(name: str) -> Tuple[Optional[str], str]:
               calling this function.
     """
     parts = name.split('.')
-    for i, part in enumerate(parts, 1):
+    for i, _part in enumerate(parts, 1):
         try:
             modname = ".".join(parts[:i])
             import_module(modname)

sphinx/util/osutil.py

@@ -75,7 +75,7 @@ def ensuredir(path: str) -> None:
 
 def mtimes_of_files(dirnames: List[str], suffix: str) -> Iterator[float]:
     for dirname in dirnames:
-        for root, dirs, files in os.walk(dirname):
+        for root, _dirs, files in os.walk(dirname):
             for sfile in files:
                 if sfile.endswith(suffix):
                     try:

sphinx/writers/latex.py

@@ -1508,7 +1508,7 @@ class LaTeXTranslator(SphinxTranslator):
         if not node.get('inline', True):
             self.body.append(CR)
         entries = node['entries']
-        for type, string, tid, ismain, key_ in entries:
+        for type, string, _tid, ismain, _key in entries:
             m = ''
             if ismain:
                 m = '|spxpagem'
@@ -1976,7 +1976,7 @@ class LaTeXTranslator(SphinxTranslator):
 
     def depart_container(self, node: Element) -> None:
         classes = node.get('classes', [])
-        for c in classes:
+        for _c in classes:
             self.body.append('\n\\end{sphinxuseclass}')
 
     def visit_decoration(self, node: Element) -> None:

sphinx/writers/texinfo.py

@@ -312,7 +312,7 @@ class TexinfoTranslator(SphinxTranslator):
             del node_menus[top['node_name']]
             top['node_name'] = 'Top'
         # handle the indices
-        for name, content in self.indices:
+        for name, _content in self.indices:
             node_menus[name] = []
             node_menus['Top'].append(name)
 
@@ -320,7 +320,7 @@ class TexinfoTranslator(SphinxTranslator):
         """Collect the relative links (next, previous, up) for each "node"."""
         rellinks = self.rellinks
         node_menus = self.node_menus
-        for id, entries in node_menus.items():
+        for id in node_menus:
             rellinks[id] = ['', '', '']
         # up's
         for id, entries in node_menus.items():
@@ -466,7 +466,7 @@ class TexinfoTranslator(SphinxTranslator):
     def collect_indices(self) -> None:
         def generate(content: List[Tuple[str, List[IndexEntry]]], collapsed: bool) -> str:
             ret = ['\n@menu\n']
-            for letter, entries in content:
+            for _letter, entries in content:
                 for entry in entries:
                     if not entry[3]:
                         continue
@@ -1018,7 +1018,7 @@ class TexinfoTranslator(SphinxTranslator):
         if len(self.colwidths) != self.n_cols:
             return
         self.body.append('\n\n@multitable ')
-        for i, n in enumerate(self.colwidths):
+        for n in self.colwidths:
             self.body.append('{%s} ' % ('x' * (n + 2)))
 
     def depart_colspec(self, node: Element) -> None:
@@ -1054,7 +1054,7 @@ class TexinfoTranslator(SphinxTranslator):
         self.entry_sep = '@tab'
 
     def depart_entry(self, node: Element) -> None:
-        for i in range(node.get('morecols', 0)):
+        for _i in range(node.get('morecols', 0)):
             self.body.append('\n@tab\n')
 
     # -- Field Lists

sphinx/writers/text.py

@@ -167,8 +167,8 @@ class Table:
     @property
     def cells(self) -> Generator[Cell, None, None]:
         seen: Set[Cell] = set()
-        for lineno, line in enumerate(self.lines):
+        for line in self.lines:
-            for colno, cell in enumerate(line):
+            for cell in line:
                 if cell and cell not in seen:
                     yield cell
                     seen.add(cell)

tests/test_domain_c.py

@@ -716,7 +716,7 @@ def test_domain_c_build_field_role(app, status, warning):
 
 def _get_obj(app, queryName):
     domain = app.env.get_domain('c')
-    for name, dispname, objectType, docname, anchor, prio in domain.get_objects():
+    for name, _dispname, objectType, docname, anchor, _prio in domain.get_objects():
         if name == queryName:
             return (docname, anchor, objectType)
     return (queryName, "not", "found")

tests/test_ext_napoleon.py

@@ -101,9 +101,9 @@ class SetupTest(TestCase):
     def test_add_config_values(self):
         app = mock.Mock(Sphinx)
         setup(app)
-        for name, (default, rebuild) in Config._config_values.items():
+        for name in Config._config_values:
             has_config = False
-            for method_name, args, kwargs in app.method_calls:
+            for method_name, args, _kwargs in app.method_calls:
                 if(method_name == 'add_config_value' and
                    args[0] == name):
                     has_config = True
@@ -112,7 +112,7 @@ class SetupTest(TestCase):
 
         has_process_docstring = False
         has_skip_member = False
-        for method_name, args, kwargs in app.method_calls:
+        for method_name, args, _kwargs in app.method_calls:
             if method_name == 'connect':
                 if(args[0] == 'autodoc-process-docstring' and
                    args[1] == _process_docstring):

tests/test_intl.py

@@ -47,7 +47,7 @@ def write_mo(pathname, po):
 @pytest.fixture(autouse=True)
 def setup_intl(app_params):
     srcdir = path(app_params.kwargs['srcdir'])
-    for dirpath, dirs, files in os.walk(srcdir):
+    for dirpath, _dirs, files in os.walk(srcdir):
         dirpath = path(dirpath)
         for f in [f for f in files if f.endswith('.po')]:
             po = dirpath / f

utils/doclinter.py

@@ -69,7 +69,7 @@ def main(args: List[str]) -> int:
         if os.path.isfile(path):
             errors += lint(path)
         elif os.path.isdir(path):
-            for root, dirs, files in os.walk(path):
+            for root, _dirs, files in os.walk(path):
                 for filename in files:
                     if filename.endswith('.rst'):
                         path = os.path.join(root, filename)