We are currently solving the following issue within our repository. Here is the issue text:
--- BEGIN ISSUE ---
No module named 'elasticdl.python.elasticdl.layers' on master
```
Traceback (most recent call last):
  File "/usr/local/lib/python3.7/runpy.py", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "/usr/local/lib/python3.7/runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "/elasticdl/python/master/main.py", line 28, in <module>
    from elasticdl.python.elasticdl.layers.embedding import Embedding
ModuleNotFoundError: No module named 'elasticdl.python.elasticdl.layers'
```

Seems `layers` directory is not installed to `/usr/local/lib/python3.7/site-packages/elasticdl-develop-py3.7.egg/elasticdl/python/elasticdl` after running `python setup.py install`

Steps to reproduce:

1. In a Python Docker container, clone ElasticDL and run `python setup.py install`
1. remove the cloned source
1. execute a demo job by: `elasticdl train ...`

--- END ISSUE ---

Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
--- BEGIN FILES ---
Path: `elasticdl/python/elasticdl/__init__.py`
Content:
```
```
--- END FILES ---

Please first localize the bug based on the issue statement, and then generate a patch according to the `git diff` format fenced by three backticks.

Here is an example:

```diff
diff --git a/examples/server_async.py b/examples/server_async.py
--- a/examples/server_async.py
+++ b/examples/server_async.py
@@ -313,4 +313,4 @@
 
 
 if __name__ == "__main__":
-    asyncio.run(run_async_server("."), debug=True)
+    asyncio.run(run_async_server(), debug=True)
diff --git a/examples/server_sync.py b/examples/server_sync.py
--- a/examples/server_sync.py
+++ b/examples/server_sync.py
@@ -313,5 +313,5 @@
 
 
 if __name__ == "__main__":
-    server = run_sync_server(".")
+    server = run_sync_server()
     server.shutdown()

```

diff --git a/elasticdl/python/elasticdl/__init__.py b/elasticdl/python/elasticdl/__init__.py
--- a/elasticdl/python/elasticdl/__init__.py
+++ b/elasticdl/python/elasticdl/__init__.py
@@ -0,0 +1 @@
+from elasticdl.python.elasticdl import layers  # noqa: F401

{"golden_diff": "diff --git a/elasticdl/python/elasticdl/__init__.py b/elasticdl/python/elasticdl/__init__.py\n--- a/elasticdl/python/elasticdl/__init__.py\n+++ b/elasticdl/python/elasticdl/__init__.py\n@@ -0,0 +1 @@\n+from elasticdl.python.elasticdl import layers  # noqa: F401\n", "issue": "No module named 'elasticdl.python.elasticdl.layers' on master\n```\r\nTraceback (most recent call last):\r\n  File \"/usr/local/lib/python3.7/runpy.py\", line 193, in _run_module_as_main\r\n    \"__main__\", mod_spec)\r\n  File \"/usr/local/lib/python3.7/runpy.py\", line 85, in _run_code\r\n    exec(code, run_globals)\r\n  File \"/elasticdl/python/master/main.py\", line 28, in <module>\r\n    from elasticdl.python.elasticdl.layers.embedding import Embedding\r\nModuleNotFoundError: No module named 'elasticdl.python.elasticdl.layers'\r\n```\r\n\r\nSeems `layers` directory is not installed to `/usr/local/lib/python3.7/site-packages/elasticdl-develop-py3.7.egg/elasticdl/python/elasticdl` after running `python setup.py install`\r\n\r\nSteps to reproduce:\r\n\r\n1. In a Python Docker container, clone ElasticDL and run `python setup.py install`\r\n1. remove the cloned source\r\n1. execute a demo job by: `elasticdl train ...`\n", "before_files": [{"content": "", "path": "elasticdl/python/elasticdl/__init__.py"}], "after_files": [{"content": "from elasticdl.python.elasticdl import layers  # noqa: F401\n", "path": "elasticdl/python/elasticdl/__init__.py"}]}