Fix outdated references to 3.6 and run pyupgrade (#3286)

I also missed the accidental removal of the 3.11 classifier in the PR.

README.md

@@ -38,9 +38,8 @@ Try it out now using the [Black Playground](https://black.vercel.app). Watch the
 
 ### Installation
 
-_Black_ can be installed by running `pip install black`. It requires Python 3.6.2+ to
+_Black_ can be installed by running `pip install black`. It requires Python 3.7+ to run.
-run. If you want to format Jupyter Notebooks, install with
+If you want to format Jupyter Notebooks, install with `pip install 'black[jupyter]'`.
-`pip install 'black[jupyter]'`.
 
 If you can't wait for the latest _hotness_ and want to install from GitHub, use:
 

docs/getting_started.md

@@ -16,9 +16,8 @@ Also, you can try out _Black_ online for minimal fuss on the
 
 ## Installation
 
-_Black_ can be installed by running `pip install black`. It requires Python 3.6.2+ to
+_Black_ can be installed by running `pip install black`. It requires Python 3.7+ to run.
-run. If you want to format Jupyter Notebooks, install with
+If you want to format Jupyter Notebooks, install with `pip install 'black[jupyter]'`.
-`pip install 'black[jupyter]'`.
 
 If you can't wait for the latest _hotness_ and want to install from GitHub, use:
 

docs/integrations/editors.md

@@ -148,7 +148,7 @@ curl https://raw.githubusercontent.com/psf/black/stable/autoload/black.vim -o ~/
 Let me know if this requires any changes to work with Vim 8's builtin `packadd`, or
 Pathogen, and so on.
 
-This plugin **requires Vim 7.0+ built with Python 3.6+ support**. It needs Python 3.6 to
+This plugin **requires Vim 7.0+ built with Python 3.7+ support**. It needs Python 3.7 to
 be able to run _Black_ inside the Vim process which is much faster than calling an
 external command.
 

pyproject.toml

@@ -58,6 +58,7 @@ classifiers = [
   "Programming Language :: Python :: 3.8",
   "Programming Language :: Python :: 3.9",
   "Programming Language :: Python :: 3.10",
+  "Programming Language :: Python :: 3.11",
   "Topic :: Software Development :: Libraries :: Python Modules",
   "Topic :: Software Development :: Quality Assurance",
 ]

src/black/comments.py

@@ -270,8 +270,7 @@ def _generate_ignored_nodes_from_fmt_skip(
         while "\n" not in prev_sibling.prefix and prev_sibling.prev_sibling is not None:
             prev_sibling = prev_sibling.prev_sibling
             siblings.insert(0, prev_sibling)
-        for sibling in siblings:
+        yield from siblings
-            yield sibling
     elif (
         parent is not None and parent.type == syms.suite and leaf.type == token.NEWLINE
     ):

src/black/concurrency.py

@@ -58,12 +58,7 @@ def shutdown(loop: asyncio.AbstractEventLoop) -> None:
 
         for task in to_cancel:
             task.cancel()
-        if sys.version_info >= (3, 7):
         loop.run_until_complete(asyncio.gather(*to_cancel, return_exceptions=True))
-        else:
-            loop.run_until_complete(
-                asyncio.gather(*to_cancel, loop=loop, return_exceptions=True)
-            )
     finally:
         # `concurrent.futures.Future` objects cannot be cancelled once they
         # are already running. There might be some when the `shutdown()` happened.
@@ -191,9 +186,6 @@ async def schedule_formatting(
                     sources_to_cache.append(src)
                 report.done(src, changed)
     if cancelled:
-        if sys.version_info >= (3, 7):
         await asyncio.gather(*cancelled, return_exceptions=True)
-        else:
-            await asyncio.gather(*cancelled, loop=loop, return_exceptions=True)
     if sources_to_cache:
         write_cache(cache, sources_to_cache, mode)

src/black/trans.py

@@ -1256,7 +1256,7 @@ def do_transform(self, line: Line, string_idx: int) -> Iterator[TResult[Line]]:
 
         string_op_leaves = self._get_string_operator_leaves(LL)
         string_op_leaves_length = (
-            sum([len(str(prefix_leaf)) for prefix_leaf in string_op_leaves]) + 1
+            sum(len(str(prefix_leaf)) for prefix_leaf in string_op_leaves) + 1
             if string_op_leaves
             else 0
         )