From 55d3eb8fab40957ac1667dfd9846d08a361d5c2e Mon Sep 17 00:00:00 2001
From: Jakob Scheid <jakob.scheid@icloud.com>
Date: Thu, 2 Apr 2026 14:28:26 +0200
Subject: [PATCH] Make library backward compatible: use typing.Union instead of
 the | operator

---
 README.md                  | 3 +++
 pyproject.toml             | 2 +-
 src/jeb_utils/jeb_utils.py | 7 ++++---
 src/jeb_utils/utils.py     | 8 ++++----
 4 files changed, 12 insertions(+), 8 deletions(-)

diff --git a/README.md b/README.md
index 90a4563..95949b2 100644
--- a/README.md
+++ b/README.md
@@ -77,6 +77,9 @@ pip install jeb-utils --index-url https://repo.jcloud-services.ddns.net/simple/
 - `create_file_if_not_exists`: Creates a file if it does not exist.
 
 ## Changelog
+### Version 0.3.0
+- Make library backward compatible: use `typing.Union` instead of the `|` operator
+
 ### Version 0.2.5
 - Update type hint `Sequence` in `jeb_utils.utils.find_nearest_lower_number`  to `Sequence[int | float]`
 
diff --git a/pyproject.toml b/pyproject.toml
index 52eb6d3..6c88000 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "jeb-utils"
-version = "0.2.5"
+version = "0.3.0"
 description = "Common utils for JEB client and server."
 dependencies = ["cryptography"]
 license = "Apache-2.0"
\ No newline at end of file
diff --git a/src/jeb_utils/jeb_utils.py b/src/jeb_utils/jeb_utils.py
index d48b6f4..296d2d8 100644
--- a/src/jeb_utils/jeb_utils.py
+++ b/src/jeb_utils/jeb_utils.py
@@ -15,6 +15,7 @@
 import io
 import re
 from . import utils
+from typing import Union
 
 __all__ = [
     'TOPIC_PARTITION_SEPARATOR'
@@ -63,12 +64,12 @@ def format_topic_partitions(topic_name: str, partitions: set) -> list:
 def get_next_lower_index_entry(offset: int):
     return utils.get_next_lower_integer_multiple(offset, 1024)
 
-def validate_topic_partition(partition_number: str | int) -> bool:
+def validate_topic_partition(partition_number: Union[str, int]) -> bool:
     '''
     Validates a topic partition number format.
 
     :param partition_number: The partition number
-    :type partition_number: str | int
+    :type partition_number: Union[str, int]
 
     :return: ``True``, if the partition number is valid, otherwise ``False``
     :rtype: bool
@@ -190,7 +191,7 @@ class AttributesByte:
         )
 
     @classmethod
-    def from_byte(cls, b: bytes | int):
+    def from_byte(cls, b: Union[bytes, int]):
         if isinstance(b, int):
             b = bytes([b])
 
diff --git a/src/jeb_utils/utils.py b/src/jeb_utils/utils.py
index 29c7b40..c5a519d 100644
--- a/src/jeb_utils/utils.py
+++ b/src/jeb_utils/utils.py
@@ -129,17 +129,17 @@ def get_next_lower_integer_multiple(value: int, multiple: int) -> int:
     '''
     return value - (value % multiple)
 
-def find_nearest_lower_number(number_list: Sequence[int | float], target: int | float) -> int | float:
+def find_nearest_lower_number(number_list: Sequence[Union[int, float]], target: Union[int, float]) -> Union[int, float]:
     '''
     Finds the nearest lower number to the target from the list.
 
     :param number_list: The list
-    :type number_list: Sequence
+    :type number_list: Sequence[Union[int, float]]
     :param target: The target
-    :type target: int | float
+    :type target: Union[int, float]
 
     :return: The nearest lower number to the target from the list.
-    :rtype: int | float
+    :rtype: Union[int, float]
     '''
     nearest = None
     for number in number_list: