add version string

python/jittor/__init__.py

@@ -7,6 +7,7 @@
 # This file is subject to the terms and conditions defined in
 # file 'LICENSE.txt', which is part of this source code package.
 # ***************************************************************
+__version__ = '1.1.5.6'
 from . import lock
 with lock.lock_scope():
     from . import compiler

setup.py

@@ -19,9 +19,17 @@ path = os.path.dirname(__file__)
 with open(os.path.join(path, "README.md"), "r", encoding='utf8') as fh:
     long_description = fh.read()
 
+with open(os.path.join(path, "python/jittor/__init__.py"), "r", encoding='utf8') as fh:
+    for line in fh:
+        if line.startswith('__version__'):
+            version = line.split("'")[1]
+            break
+    else:
+        raise RuntimeError("Unable to find version string.")
+
 setuptools.setup(
     name='jittor',  
-    version='1.1.5.6',
+    version=version,
     # scripts=[],
     author="Jittor Group",
     author_email="ran.donglang@gmail.com",