bump ver, read version from init

autouri/__init__.py

@@ -5,4 +5,4 @@
 from .s3uri import S3URI
 
 __all__ = ["AbsPath", "AutoURI", "URIBase", "GCSURI", "HTTPURL", "S3URI"]
-__version__ = "0.2.4"
+__version__ = "0.2.5"

setup.py

@@ -1,11 +1,43 @@
+import os
+import re
+from pathlib import Path
+
 import setuptools
 
+META_PATH = Path("autouri", "__init__.py")
+HERE = os.path.abspath(os.path.dirname(__file__))
+
+
+def read(*parts):
+    """
+    Build an absolute path from *parts* and and return the contents of the
+    resulting file.  Assume UTF-8 encoding.
+    """
+    with Path(HERE, *parts).open(encoding="utf-8") as f:
+        return f.read()
+
+
+META_FILE = read(META_PATH)
+
+
+def find_meta(meta):
+    """
+    Extract __*meta*__ from META_FILE.
+    """
+    meta_match = re.search(
+        r"^__{meta}__ = ['\"]([^'\"]*)['\"]".format(meta=meta), META_FILE, re.M
+    )
+    if meta_match:
+        return meta_match.group(1)
+    raise
+
+
 with open("README.md", "r") as fh:
     long_description = fh.read()
 
 setuptools.setup(
     name="autouri",
-    version="0.2.5",
+    version=find_meta("version"),
     python_requires=">=3.6",
     scripts=["bin/autouri"],
     author="Jin wook Lee",