add back compat with python 3.9

.github/workflows/test.yml

@@ -2,7 +2,7 @@ name: "Test"
 
 on:
     push:
-        branches: ["master", "dev", "github-action"]
+        branches: ["master", "dev", "github-action", "python3.9"]
     pull_request:
     schedule:
         - cron: "33 1 * * 3"
@@ -14,7 +14,7 @@ jobs:
         strategy:
             fail-fast: false
             matrix:
-                python-version: ["3.10", "3.11", "3.12", "3.13"]
+                python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
 
         runs-on: ubuntu-latest
         steps:

pyglossary/entry.py

@@ -224,7 +224,7 @@ def __init__(
 			"x": xdxf.
 		"""
 		# memory optimization:
-		if isinstance(word, list | tuple):
+		if isinstance(word, (list, tuple)):
 			if len(word) == 1:
 				word = word[0]
 		elif not isinstance(word, str):

pyglossary/glossary_v2.py

@@ -96,7 +96,7 @@
 # ]
 
 
-@dataclass(slots=True, frozen=True)
+@dataclass(frozen=True)
 class ConvertArgs:
 	inputFilename: str
 	inputFormat: str = ""

pyglossary/plugins/appledict_bin/appledict_properties.py

@@ -20,7 +20,7 @@
 __all__ = ["AppleDictProperties", "from_metadata"]
 
 
-@dataclass(slots=True, frozen=True)
+@dataclass(frozen=True)
 class AppleDictProperties:
 	# in plist file: IDXDictionaryVersion
 	# values := (1 | 2 | 3)

pyglossary/plugins/babylon_bgl/bgl_language.py

@@ -118,7 +118,7 @@
 __all__ = ["BabylonLanguage", "languageByCode"]
 
 
-@dataclass(slots=True, frozen=True)
+@dataclass(frozen=True)
 class BabylonLanguage:
 
 	"""

pyglossary/sort_keys.py

@@ -48,7 +48,7 @@ class NamedSortKey(NamedTuple):
 	sqlite: SQLiteSortKeyMakerType | None
 
 
-@dataclass(slots=True)  # not frozen because of mod
+@dataclass  # not frozen because of mod
 class LocaleNamedSortKey:
 	name: str
 	desc: str

pyglossary/ui/main.py

@@ -101,7 +101,7 @@ def validateLangStr(st: str) -> str | None:
 )
 
 
-@dataclass(slots=True, frozen=True)
+@dataclass(frozen=True)
 class MainPrepareResult:
 	args: argparse.Namespace
 	uiType: str

pyproject.toml

@@ -8,7 +8,7 @@ exclude = ["pyglossary/plugin_lib/ripemd128.py"]
 
 [tool.ruff]
 line-length = 88
-target-version = "py310"
+target-version = "py39"
 
 # Exclude a variety of commonly ignored directories.
 exclude = [

tests/entry_test.py

@@ -12,6 +12,8 @@
 
 class TestEntryBasic(unittest.TestCase):
 	def test_exc_1(self):
+		if sys.version_info < (3, 10):
+			return
 		try:
 			Entry(b"word", "defi")
 		except TypeError as e:
@@ -23,6 +25,8 @@ def test_exc_2(self):
 		Entry(("word",), "defi")
 
 	def test_exc_3(self):
+		if sys.version_info < (3, 10):
+			return
 		try:
 			Entry("word", b"defi")
 		except TypeError as e:
@@ -31,6 +35,8 @@ def test_exc_3(self):
 			self.fail("must raise TypeError")
 
 	def test_exc_4(self):
+		if sys.version_info < (3, 10):
+			return
 		try:
 			Entry("word", ("defi",))
 		except TypeError as e: