Adding experimental wgit to the repo with wgit command (#991)

* [feat] Adding wgit within fairscale/experimental/wgit.

* [feat] adding experimental wgit

experimental/__init__.py

+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the BSD license found in the
+# LICENSE file in the root directory of this source tree.

experimental/wgit/__init__.py

+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the BSD license found in the
+# LICENSE file in the root directory of this source tree.
+
+from .cli import main
+
+__version__ = "0.0.1"

experimental/wgit/__main__.py

+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the BSD license found in the
+# LICENSE file in the root directory of this source tree.
+
+from .cli import main
+
+if __name__ == "__main__":
+    main()

experimental/wgit/cli.py

+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the BSD license found in the
+# LICENSE file in the root directory of this source tree.
+
+import argparse
+
+
+def main(argv=None):
+    desc = "WeiGit checkpoint tracking"
+    parser = argparse.ArgumentParser(description=desc)
+
+    # flags
+    parser.add_argument("-i", "--init", action="store_true", help="Initialize a weigit repository!")
+
+    args = parser.parse_args(argv)
+
+    if args.init:
+        print("Hello World, Wgit has been initialized!")
+
+
+if __name__ == "__main__":
+    main()

setup.py

@@ -69,6 +69,7 @@ if __name__ == "__main__":
         author_email="todo@fb.com",
         long_description="FairScale is a PyTorch extension library for high performance and large scale training on one or multiple machines/nodes. This library extends basic PyTorch capabilities while adding new experimental ones.",
         long_description_content_type="text/markdown",
+        entry_points={"console_scripts": ["wgit = experimental.wgit.__main__:main"]},
         classifiers=[
             "Programming Language :: Python :: 3.7",
             "Programming Language :: Python :: 3.8",

tests/ci_test_list_3.txt

@@ -23,3 +23,4 @@ tests/optim/test_oss_adascale.py
 tests/optim/test_ddp_adascale.py
 tests/experimental/nn/data_parallel/test_gossip.py
 tests/nn/data_parallel/test_fsdp_hf_transformer_eval.py
+tests/experimental/wgit/cli/test_cli.py

tests/experimental/wgit/__init__.py

+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the BSD license found in the
+# LICENSE file in the root directory of this source tree.

tests/experimental/wgit/cli/__init__.py

+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the BSD license found in the
+# LICENSE file in the root directory of this source tree.

tests/experimental/wgit/cli/test_cli.py

+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the BSD license found in the
+# LICENSE file in the root directory of this source tree.
+
+import experimental.wgit.cli as cli
+
+
+def test_cli_init(capsys):
+    cli.main(["--init"])
+    out, err = capsys.readouterr()
+    assert out == "Hello World, Wgit has been initialized!\n"
+    assert err == ""