update 3.0.1

setup.py

 import setuptools
+import os
+import re
 
 with open("README.md", "r") as fh:
     long_description = fh.read()
@@ -10,17 +12,32 @@ with open("requirements.txt", "r") as f:
         if not req.startswith("#") and req.__contains__("==")
     ]
 
+def get_version():
+    # 找到 __init__.py 的路径
+    init_path = os.path.join(
+        os.path.dirname(__file__), 
+        "csst_ifs_gehong", 
+        "__init__.py"
+    )
+    # 读取文件内容，使用正则找出版本号
+    with open(init_path, "r", encoding="utf-8") as f:
+        content = f.read()
+        version_match = re.search(r'^__version__ = ["\']([^"\']*)["\']', content, re.M)
+        if version_match:
+            return version_match.group(1)
+        raise RuntimeError("无法在 __init__.py 中找到 __version__ 定义")
+
 setuptools.setup(
-    name='csst_ifs_gehong',
-    version='3.0.0',
-    license='MIT',
-    author="Shuai Feng",
-    author_email='sfeng@hebtu.edu.cn',
-    description='The packages for the scientific data simulation of CSST-IFS',  # short description
+    name = 'csst_ifs_gehong',
+    version = get_version(),
+    license = 'MIT',
+    author = "Shuai Feng",
+    author_email = 'sfeng@hebtu.edu.cn',
+    description = 'The packages for the scientific data simulation of CSST-IFS',  # short description
     long_description=long_description,
-    long_description_content_type="text/markdown",
-    url='https://csst-tb.bao.ac.cn/code/csst-sims/csst_ifs_gehong',
-    project_urls={
+    long_description_content_type = "text/markdown",
+    url = 'https://csst-tb.bao.ac.cn/code/csst-sims/csst_ifs_gehong',
+    project_urls = {
         'Source': 'https://csst-tb.bao.ac.cn/code/csst-sims/csst_ifs_gehong',
     },
     packages=setuptools.find_packages(),