Adds support for pyproject.toml

Author: scuml

docs/intro.rst

@@ -200,7 +200,8 @@ Example::
   max-line-length = 160
   statistics = True
 
-At the project level, a ``setup.cfg`` file or a ``tox.ini`` file is read if
+At the project level, a ``setup.cfg`` file or a ``tox.ini``
+(or a ``pyproject.toml`` if running python 3.11+) file is read if
 present. If none of these files have a ``[pycodestyle]`` section, no project
 specific configuration is loaded.
 

pycodestyle.py

@@ -60,6 +60,8 @@
 from fnmatch import fnmatch
 from functools import lru_cache
 from optparse import OptionParser
+if sys.version_info >= (3, 11):
+    import tomllib
 
 # this is a performance hack.  see https://bugs.python.org/issue43014
 if (
@@ -83,7 +85,11 @@
 except ImportError:
     USER_CONFIG = None
 
-PROJECT_CONFIG = ('setup.cfg', 'tox.ini')
+if sys.version_info >= (3, 11):
+    PROJECT_CONFIG = ('setup.cfg', 'tox.ini', 'pyproject.toml')
+else:
+    PROJECT_CONFIG = ('setup.cfg', 'tox.ini')
+
 MAX_LINE_LENGTH = 79
 # Number of blank lines between various code parts.
 BLANK_LINES_CONFIG = {