Merge pull request #116 from langchain-ai/eugene/add_version

Add __version__ to langgraph

langgraph/__init__.py

@@ -0,0 +1,3 @@
+from langgraph.version import __version__
+
+__all__ = ["__version__"]

langgraph/version.py

@@ -0,0 +1,9 @@
+"""Main entrypoint into package."""
+from importlib import metadata
+
+try:
+    __version__ = metadata.version(__package__)
+except metadata.PackageNotFoundError:
+    # Case where package metadata is not available.
+    __version__ = ""
+del metadata  # optional, avoids polluting the results of dir(__package__)