adding check_version.py

check_version.py

@@ -0,0 +1,29 @@
+#!/usr/bin/env python
+
+import sys
+import subprocess
+import grg_psse2grg
+
+git_describe = subprocess.check_output(['git', 'describe', '--tags']).rstrip().decode('ascii')
+
+py_version = grg_psse2grg.__version__
+
+print('git describe: {}'.format(git_describe))
+
+git_version = git_describe.split('-')[0].strip('v')
+print('git version: {}'.format(git_version))
+
+print('grg_psse2grg version: {}'.format(py_version))
+
+py_version_parts = [int(x) for x in py_version.split('.')]
+git_version_parts = [int(x) for x in git_version.split('.')]
+
+assert(len(py_version_parts) == len(git_version_parts))
+
+for i in range(len(py_version_parts)):
+    if git_version_parts[i] > py_version_parts[i]:
+        print('git version is ahead of python version')
+        sys.exit(1)
+
+    if git_version_parts[i] < py_version_parts[i]:
+        break