Update gen_releasenotes

bin/gen_releasenotes

@@ -3,11 +3,11 @@
 import argparse
 import logging
 import os
+import re
 import subprocess
 from datetime import datetime
 from typing import List, Optional, Tuple
 
-from awesomeversion.match import is_pep440
 from github import Github, GithubException, Repository, Tag
 from packaging.version import Version
 
@@ -19,7 +19,7 @@ logging.basicConfig(level=logging.CRITICAL)
 
 _LOGGER = logging.getLogger(__name__)
 
-VERSION = "1.2.0"
+VERSION = "1.2.1"
 
 ROOT = os.path.dirname(os.path.abspath(f"{__file__}/.."))
 
@@ -40,6 +40,16 @@ BODY = """
 CHANGE = "- [{line}]({link}) @{author}\n"
 NOCHANGE = "_No changes in this release._"
 
+RE_PEP440 = re.compile(
+    r"([1-9][0-9]*!)?(0|[1-9][0-9]*)(\.(0|[1-9][0-9]*))*((a|b|rc)"
+    r"(0|[1-9][0-9]*))?(\.post(0|[1-9][0-9]*))?(\.dev(0|[1-9][0-9]*))?(\.rc(0|[1-9][0-9]*))?"
+)
+
+
+def is_pep440(version: str) -> bool:
+    """Return True if the version is PEP 440 compliant."""
+    return bool(RE_PEP440.match(version))
+
 
 def get_commits(repo: Repository, since: datetime, until: datetime):
     """Get commits in repo."""
@@ -222,12 +232,7 @@ def main():
             _LOGGER.debug(version)
             new_version = bump_version(version)
             _LOGGER.debug(new_version)
-            print(
-                "Generated release notes for v{version}:\n{message}".format(
-                    version=new_version,
-                    message=changes,
-                )
-            )
+            print(f"Generated release notes for v{new_version}:\n{changes}")
         else:
             print("Not enough changes for a release.")
     else: