Apply pyupgrade 3.9 and EOL 3.8

https://peps.python.org/pep-0569/

.github/workflows/main.yml

@@ -23,7 +23,7 @@ jobs:
       # You can use PyPy versions in python-version.
       # For example, pypy2 and pypy3
       matrix:
-        python-version: ["3.7", "3.8", "3.9", "3.10", "3.11", "3.12"]
+        python-version: ["3.9", "3.10", "3.11", "3.12"]
 
     # Steps represent a sequence of tasks that will be executed as part of the job
     steps:

m3u8/version_matching.py

@@ -4,7 +4,7 @@
 from m3u8.version_matching_rules import VersionMatchingError, available_rules
 
 
-def get_version(file_lines: List[str]):
+def get_version(file_lines: list[str]):
     for line in file_lines:
         if line.startswith(protocol.ext_x_version):
             version = line.split(":")[1]
@@ -15,7 +15,7 @@ def get_version(file_lines: List[str]):
 
 def valid_in_all_rules(
     line_number: int, line: str, version: float
-) -> List[VersionMatchingError]:
+) -> list[VersionMatchingError]:
     errors = []
     for rule in available_rules:
         validator = rule(version, line_number, line)
@@ -26,7 +26,7 @@ def valid_in_all_rules(
     return errors
 
 
-def validate(file_lines: List[str]) -> List[VersionMatchingError]:
+def validate(file_lines: list[str]) -> list[VersionMatchingError]:
     found_version = get_version(file_lines)
     if found_version is None:
         return []

m3u8/version_matching_rules.py

@@ -102,7 +102,7 @@ def validate(self):
         return self.version >= 4
 
 
-available_rules: List[Type[VersionMatchRuleBase]] = [
+available_rules: list[type[VersionMatchRuleBase]] = [
     ValidIVInEXTXKEY,
     ValidFloatingPointEXTINF,
     ValidEXTXBYTERANGEOrEXTXIFRAMESONLY,

setup.py

@@ -24,5 +24,5 @@
     description="Python m3u8 parser",
     long_description=long_description,
     long_description_content_type="text/markdown",
-    python_requires=">=3.7",
+    python_requires=">=3.9",
 )