Specify encoding in open

CHANGELOG.md

@@ -1,5 +1,12 @@
 # Change Log
 
+## Unreleased
+
+Bugfixes:
+* Specify encoding when opening files. Prevents `UnicodeDecodeError` on Windows
+  when the file contains non-CP1252 characters.
+  Contributed by [Avasam](https://github.com/Avasam).
+
 ## 22.10.0
 
 Bugfixes:
@@ -149,7 +156,7 @@ Features:
 
 * extend Y001 to cover `ParamSpec` and `TypeVarTuple` in addition to `TypeVar`
 * detect usage of non-integer indices in `sys.version_info` checks
-* extend Y010 to check async functions in addition to normal functions 
+* extend Y010 to check async functions in addition to normal functions
 * extend Y010 to cover what was previously included in Y090 (disallow
   assignments in `__init__` methods) and Y091 (disallow `raise`
   statements). The previous checks were disabled by default.

pyi.py

@@ -1774,7 +1774,7 @@ def run(self, tree: ast.AST) -> Iterator[Error]:
 
 
 def _check_for_type_comments(path: Path) -> Iterator[Error]:
-    stublines = path.read_text().splitlines()
+    stublines = path.read_text(encoding="UTF-8").splitlines()
     for lineno, line in enumerate(stublines, start=1):
         cleaned_line = line.strip()
 

setup.py

@@ -11,14 +11,14 @@
 
 
 current_dir = os.path.abspath(os.path.dirname(__file__))
-with open(os.path.join(current_dir, "README.md"), encoding="utf8") as ld_file:
+with open(os.path.join(current_dir, "README.md"), encoding="UTF-8") as ld_file:
     long_description = ld_file.read()
 
 
 _version_re = re.compile(r"__version__\s+=\s+(?P<version>.*)")
 
 
-with open(os.path.join(current_dir, "pyi.py"), "r") as f:
+with open(os.path.join(current_dir, "pyi.py"), "r", encoding="UTF-8") as f:
     version = _version_re.search(f.read()).group("version")
     version = str(ast.literal_eval(version))
 

tests/test_pyi_files.py

@@ -12,7 +12,7 @@ def test_pyi_file(path):
     flags = []
     expected_output = ""
 
-    with open(path) as file:
+    with open(path, encoding="UTF-8") as file:
         file_contents = file.read()
 
     for lineno, line in enumerate(file_contents.splitlines(), start=1):