We are currently solving the following issue within our repository. Here is the issue text:
--- BEGIN ISSUE ---
Group is not defined in collection
https://github.com/wright-group/WrightTools/blob/ca056aa600f341501a99d2ea4d11f7d74047bc26/WrightTools/_open.py#L48

Statement will cause an attribute error. Not tested currently

--- END ISSUE ---

Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
--- BEGIN FILES ---
Path: `WrightTools/_open.py`
Content:
```
1 """Generic open method for wt5 files."""
2 
3 
4 # --- import -------------------------------------------------------------------------------------
5 
6 
7 import posixpath
8 
9 import h5py
10 
11 from . import collection as wt_collection
12 from . import data as wt_data
13 
14 
15 # --- define -------------------------------------------------------------------------------------
16 
17 
18 __all__ = ["open"]
19 
20 
21 # --- functions ----------------------------------------------------------------------------------
22 
23 
24 def open(filepath, edit_local=False):
25     """Open any wt5 file, returning the top-level object (data or collection).
26 
27     Parameters
28     ----------
29     filepath : string
30         Path to file.
31     edit_local : boolean (optional)
32         If True, the file itself will be opened for editing. Otherwise, a
33         copy will be created. Default is False.
34 
35     Returns
36     -------
37     WrightTools Collection or Data
38         Root-level object in file.
39     """
40     f = h5py.File(filepath)
41     class_name = f[posixpath.sep].attrs["class"]
42     name = f[posixpath.sep].attrs["name"]
43     if class_name == "Data":
44         return wt_data.Data(filepath=filepath, name=name, edit_local=edit_local)
45     elif class_name == "Collection":
46         return wt_collection.Collection(filepath=filepath, name=name, edit_local=edit_local)
47     else:
48         return wt_collection.Group(filepath=filepath, name=name, edit_local=edit_local)
49
```
--- 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/WrightTools/_open.py b/WrightTools/_open.py
--- a/WrightTools/_open.py
+++ b/WrightTools/_open.py
@@ -10,6 +10,7 @@
 
 from . import collection as wt_collection
 from . import data as wt_data
+from . import _group as wt_group
 
 
 # --- define -------------------------------------------------------------------------------------
@@ -45,4 +46,4 @@
     elif class_name == "Collection":
         return wt_collection.Collection(filepath=filepath, name=name, edit_local=edit_local)
     else:
-        return wt_collection.Group(filepath=filepath, name=name, edit_local=edit_local)
+        return wt_group.Group(filepath=filepath, name=name, edit_local=edit_local)

{"golden_diff": "diff --git a/WrightTools/_open.py b/WrightTools/_open.py\n--- a/WrightTools/_open.py\n+++ b/WrightTools/_open.py\n@@ -10,6 +10,7 @@\n \n from . import collection as wt_collection\n from . import data as wt_data\n+from . import _group as wt_group\n \n \n # --- define -------------------------------------------------------------------------------------\n@@ -45,4 +46,4 @@\n     elif class_name == \"Collection\":\n         return wt_collection.Collection(filepath=filepath, name=name, edit_local=edit_local)\n     else:\n-        return wt_collection.Group(filepath=filepath, name=name, edit_local=edit_local)\n+        return wt_group.Group(filepath=filepath, name=name, edit_local=edit_local)\n", "issue": "Group is not defined in collection\nhttps://github.com/wright-group/WrightTools/blob/ca056aa600f341501a99d2ea4d11f7d74047bc26/WrightTools/_open.py#L48\r\n\r\nStatement will cause an attribute error. Not tested currently\n", "before_files": [{"content": "\"\"\"Generic open method for wt5 files.\"\"\"\n\n\n# --- import -------------------------------------------------------------------------------------\n\n\nimport posixpath\n\nimport h5py\n\nfrom . import collection as wt_collection\nfrom . import data as wt_data\n\n\n# --- define -------------------------------------------------------------------------------------\n\n\n__all__ = [\"open\"]\n\n\n# --- functions ----------------------------------------------------------------------------------\n\n\ndef open(filepath, edit_local=False):\n    \"\"\"Open any wt5 file, returning the top-level object (data or collection).\n\n    Parameters\n    ----------\n    filepath : string\n        Path to file.\n    edit_local : boolean (optional)\n        If True, the file itself will be opened for editing. Otherwise, a\n        copy will be created. Default is False.\n\n    Returns\n    -------\n    WrightTools Collection or Data\n        Root-level object in file.\n    \"\"\"\n    f = h5py.File(filepath)\n    class_name = f[posixpath.sep].attrs[\"class\"]\n    name = f[posixpath.sep].attrs[\"name\"]\n    if class_name == \"Data\":\n        return wt_data.Data(filepath=filepath, name=name, edit_local=edit_local)\n    elif class_name == \"Collection\":\n        return wt_collection.Collection(filepath=filepath, name=name, edit_local=edit_local)\n    else:\n        return wt_collection.Group(filepath=filepath, name=name, edit_local=edit_local)\n", "path": "WrightTools/_open.py"}], "after_files": [{"content": "\"\"\"Generic open method for wt5 files.\"\"\"\n\n\n# --- import -------------------------------------------------------------------------------------\n\n\nimport posixpath\n\nimport h5py\n\nfrom . import collection as wt_collection\nfrom . import data as wt_data\nfrom . import _group as wt_group\n\n\n# --- define -------------------------------------------------------------------------------------\n\n\n__all__ = [\"open\"]\n\n\n# --- functions ----------------------------------------------------------------------------------\n\n\ndef open(filepath, edit_local=False):\n    \"\"\"Open any wt5 file, returning the top-level object (data or collection).\n\n    Parameters\n    ----------\n    filepath : string\n        Path to file.\n    edit_local : boolean (optional)\n        If True, the file itself will be opened for editing. Otherwise, a\n        copy will be created. Default is False.\n\n    Returns\n    -------\n    WrightTools Collection or Data\n        Root-level object in file.\n    \"\"\"\n    f = h5py.File(filepath)\n    class_name = f[posixpath.sep].attrs[\"class\"]\n    name = f[posixpath.sep].attrs[\"name\"]\n    if class_name == \"Data\":\n        return wt_data.Data(filepath=filepath, name=name, edit_local=edit_local)\n    elif class_name == \"Collection\":\n        return wt_collection.Collection(filepath=filepath, name=name, edit_local=edit_local)\n    else:\n        return wt_group.Group(filepath=filepath, name=name, edit_local=edit_local)\n", "path": "WrightTools/_open.py"}]}