Add version utils

Author: MDUYN

investing_bot_framework/__init__.py

@@ -0,0 +1,4 @@
+from investing_bot_framework.utils.version import get_version
+
+VERSION = (1, 0, 0, 'alpha', 0)
+

investing_bot_framework/utils/__init__.py

@@ -0,0 +1,25 @@
+def get_version(version=None):
+    version = get_complete_version(version)
+    main = get_main_version(version)
+    return main
+
+
+def get_main_version(version=None):
+    """Return main version (X.Y[.Z]) from VERSION."""
+    version = get_complete_version(version)
+    parts = 2 if version[2] == 0 else 3
+    return '.'.join(str(x) for x in version[:parts])
+
+
+def get_complete_version(version=None):
+    """
+    Return a tuple of the investing algorithm framework  version. If version argument is non-empty,
+    check for correctness of the tuple provided.
+    """
+    if version is None:
+        from investing_bot_framework import VERSION as version
+    else:
+        assert len(version) == 5
+        assert version[3] in ('alpha', 'beta', 'rc', 'final')
+
+    return version