We are currently solving the following issue within our repository. Here is the issue text:
--- BEGIN ISSUE ---
PathLike behavior for File
With the recent changes to the DataFuture behavior and the File based model that we are moving to in general, we want to have File behave as closely to old behavior as possible so that there's least amount of code breakage. This is one such case:

Earlier we could do this since the result of a DataFuture was a string
> f = open(DataFuture1.result(), 'r') 

Now the result of a DataFuture is a File, which can't simply be passed to open:
> f = open(File, 'r') <-- Fails 

This can be fixed by making File follow the [os.PathLike](https://docs.python.org/3/library/os.html#os.PathLike) interface 

--- END ISSUE ---

Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
--- BEGIN FILES ---
Path: `parsl/data_provider/files.py`
Content:
```
1 """Define the File Type.
2 
3 The primary purpose of the File object is to track the protocol to be used
4 to transfer the file as well as to give the appropriate filepath depending
5 on where(client-side, remote-side, intermediary-side) the File.filepath is
6 being called from
7 """
8 
9 import os
10 import logging
11 from urllib.parse import urlparse
12 from parsl.data_provider.data_manager import DataManager
13 
14 
15 logger = logging.getLogger(__name__)
16 
17 
18 class File(object):
19     """The Parsl File Class.
20 
21     This is planned to be a very simple class that simply
22     captures various attributes of a file, and relies on client-side and worker-side
23     systems to enable to appropriate transfer of files.
24     """
25 
26     def __init__(self, url, dman=None, cache=False, caching_dir=".", staging='direct'):
27         """Construct a File object from a url string.
28 
29         Args:
30            - url (string) : url string of the file e.g.
31               - 'input.txt'
32               - 'file:///scratch/proj101/input.txt'
33               - 'globus://go#ep1/~/data/input.txt'
34               - 'globus://ddb59aef-6d04-11e5-ba46-22000b92c6ec/home/johndoe/data/input.txt'
35            - dman (DataManager) : data manager
36         """
37         self.url = url
38         parsed_url = urlparse(self.url)
39         self.scheme = parsed_url.scheme if parsed_url.scheme else 'file'
40         self.netloc = parsed_url.netloc
41         self.path = parsed_url.path
42         self.filename = os.path.basename(self.path)
43         self.dman = dman if dman else DataManager.get_data_manager()
44         self.data_future = {}
45         if self.scheme != 'file':
46             self.dman.add_file(self)
47 
48         self.cache = cache
49         self.caching_dir = caching_dir
50         self.staging = staging
51 
52     def __str__(self):
53         return self.filepath
54 
55     def __repr__(self):
56         return self.__str__()
57 
58     @property
59     def filepath(self):
60         """Return the resolved filepath on the side where it is called from.
61 
62         The appropriate filepath will be returned when called from within
63         an app running remotely as well as regular python on the client side.
64 
65         Args:
66             - self
67         Returns:
68              - filepath (string)
69         """
70         if self.scheme == 'globus':
71             if hasattr(self, 'local_path'):
72                 return self.local_path
73 
74         if 'exec_site' not in globals() or self.staging == 'direct':
75             # Assume local and direct
76             return self.path
77         else:
78             # Return self.path for now
79             return self.path
80 
81     def stage_in(self, site=None):
82         """Transport file from the site of origin to local site."""
83         return self.dman.stage_in(self, site)
84 
85     def stage_out(self):
86         """Transport file from local filesystem to origin site."""
87         return self.dman.stage_out(self)
88 
89     def set_data_future(self, df, site=None):
90         self.data_future[site] = df
91 
92     def get_data_future(self, site):
93         return self.data_future.get(site)
94 
95 
96 if __name__ == '__main__':
97 
98     x = File('./files.py')
99
```
--- 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/parsl/data_provider/files.py b/parsl/data_provider/files.py
--- a/parsl/data_provider/files.py
+++ b/parsl/data_provider/files.py
@@ -15,7 +15,7 @@
 logger = logging.getLogger(__name__)
 
 
-class File(object):
+class File(str):
     """The Parsl File Class.
 
     This is planned to be a very simple class that simply
@@ -59,6 +59,9 @@
     def __repr__(self):
         return self.__str__()
 
+    def __fspath__(self):
+        return self.filepath
+
     @property
     def filepath(self):
         """Returns the resolved filepath on the side where it is called from.

{"golden_diff": "diff --git a/parsl/data_provider/files.py b/parsl/data_provider/files.py\n--- a/parsl/data_provider/files.py\n+++ b/parsl/data_provider/files.py\n@@ -15,7 +15,7 @@\n logger = logging.getLogger(__name__)\n \n \n-class File(object):\n+class File(str):\n     \"\"\"The Parsl File Class.\n \n     This is planned to be a very simple class that simply\n@@ -59,6 +59,9 @@\n     def __repr__(self):\n         return self.__str__()\n \n+    def __fspath__(self):\n+        return self.filepath\n+\n     @property\n     def filepath(self):\n         \"\"\"Returns the resolved filepath on the side where it is called from.\n", "issue": "PathLike behavior for File\nWith the recent changes to the DataFuture behavior and the File based model that we are moving to in general, we want to have File behave as closely to old behavior as possible so that there's least amount of code breakage. This is one such case:\r\n\r\nEarlier we could do this since the result of a DataFuture was a string\r\n> f = open(DataFuture1.result(), 'r') \r\n\r\nNow the result of a DataFuture is a File, which can't simply be passed to open:\r\n> f = open(File, 'r') <-- Fails \r\n\r\nThis can be fixed by making File follow the [os.PathLike](https://docs.python.org/3/library/os.html#os.PathLike) interface \n", "before_files": [{"content": "\"\"\"Define the File Type.\n\nThe primary purpose of the File object is to track the protocol to be used\nto transfer the file as well as to give the appropriate filepath depending\non where(client-side, remote-side, intermediary-side) the File.filepath is\nbeing called from\n\"\"\"\n\nimport os\nimport logging\nfrom urllib.parse import urlparse\nfrom parsl.data_provider.data_manager import DataManager\n\n\nlogger = logging.getLogger(__name__)\n\n\nclass File(object):\n    \"\"\"The Parsl File Class.\n\n    This is planned to be a very simple class that simply\n    captures various attributes of a file, and relies on client-side and worker-side\n    systems to enable to appropriate transfer of files.\n    \"\"\"\n\n    def __init__(self, url, dman=None, cache=False, caching_dir=\".\", staging='direct'):\n        \"\"\"Construct a File object from a url string.\n\n        Args:\n           - url (string) : url string of the file e.g.\n              - 'input.txt'\n              - 'file:///scratch/proj101/input.txt'\n              - 'globus://go#ep1/~/data/input.txt'\n              - 'globus://ddb59aef-6d04-11e5-ba46-22000b92c6ec/home/johndoe/data/input.txt'\n           - dman (DataManager) : data manager\n        \"\"\"\n        self.url = url\n        parsed_url = urlparse(self.url)\n        self.scheme = parsed_url.scheme if parsed_url.scheme else 'file'\n        self.netloc = parsed_url.netloc\n        self.path = parsed_url.path\n        self.filename = os.path.basename(self.path)\n        self.dman = dman if dman else DataManager.get_data_manager()\n        self.data_future = {}\n        if self.scheme != 'file':\n            self.dman.add_file(self)\n\n        self.cache = cache\n        self.caching_dir = caching_dir\n        self.staging = staging\n\n    def __str__(self):\n        return self.filepath\n\n    def __repr__(self):\n        return self.__str__()\n\n    @property\n    def filepath(self):\n        \"\"\"Return the resolved filepath on the side where it is called from.\n\n        The appropriate filepath will be returned when called from within\n        an app running remotely as well as regular python on the client side.\n\n        Args:\n            - self\n        Returns:\n             - filepath (string)\n        \"\"\"\n        if self.scheme == 'globus':\n            if hasattr(self, 'local_path'):\n                return self.local_path\n\n        if 'exec_site' not in globals() or self.staging == 'direct':\n            # Assume local and direct\n            return self.path\n        else:\n            # Return self.path for now\n            return self.path\n\n    def stage_in(self, site=None):\n        \"\"\"Transport file from the site of origin to local site.\"\"\"\n        return self.dman.stage_in(self, site)\n\n    def stage_out(self):\n        \"\"\"Transport file from local filesystem to origin site.\"\"\"\n        return self.dman.stage_out(self)\n\n    def set_data_future(self, df, site=None):\n        self.data_future[site] = df\n\n    def get_data_future(self, site):\n        return self.data_future.get(site)\n\n\nif __name__ == '__main__':\n\n    x = File('./files.py')\n", "path": "parsl/data_provider/files.py"}], "after_files": [{"content": "\"\"\"Define the File Type.\n\nThe primary purpose of the File object is to track the protocol to be used\nto transfer the file as well as to give the appropriate filepath depending\non where(client-side, remote-side, intermediary-side) the File.filepath is\nbeing called from\n\"\"\"\n\nimport os\nimport logging\nfrom urllib.parse import urlparse\nfrom parsl.data_provider.data_manager import DataManager\n\n\nlogger = logging.getLogger(__name__)\n\n\nclass File(str):\n    \"\"\"The Parsl File Class.\n\n    This is planned to be a very simple class that simply\n    captures various attributes of a file, and relies on client-side and worker-side\n    systems to enable to appropriate transfer of files.\n    \"\"\"\n\n    def __init__(self, url, to=None, site=None, dman=None, cache=False, caching_dir=\".\", staging='direct'):\n        \"\"\"Construct a File object from a url string.\n\n        Args:\n             - url (string) : url string of the file e.g.\n               'input.txt'\n               'file:///scratch/proj101/input.txt'\n               'globus://go#ep1/~/data/input.txt'\n               'globus://ddb59aef-6d04-11e5-ba46-22000b92c6ec/home/johndoe/data/input.txt'\n               'ftp://ftp.sra.ebi.ac.uk/vol1/ERA156/ERA156312/fastq/LC_C14_cRNA_sequence_R1.txt.gz'\n             - dman (DataManager) : data manager\n             - to (string) : path the remote file will be staged to\n             - site (string) : site the remote file will be staged to\n        \"\"\"\n        self.url = url\n        parsed_url = urlparse(self.url)\n        self.scheme = parsed_url.scheme if parsed_url.scheme else 'file'\n        self.netloc = parsed_url.netloc\n        self.path = parsed_url.path\n        self.filename = os.path.basename(self.path)\n        self.to = to if to else '.'\n        self.dman = dman if dman else DataManager.get_data_manager()\n        self.data_future = {}\n        if self.scheme != 'file':\n            self.dman.add_file(self)\n\n        self.cache = cache\n        self.caching_dir = caching_dir\n        self.staging = staging\n\n    def __str__(self):\n        return self.filepath\n\n    def __repr__(self):\n        return self.__str__()\n\n    def __fspath__(self):\n        return self.filepath\n\n    @property\n    def filepath(self):\n        \"\"\"Returns the resolved filepath on the side where it is called from.\n\n        File.filepath returns the appropriate filepath when called from within\n        an app running remotely as well as regular python on the client side.\n\n        Args:\n            - self\n        Returns:\n             - filepath (string)\n        \"\"\"\n        if self.scheme == 'globus':\n            if hasattr(self, 'local_path'):\n                return self.local_path\n\n        if 'exec_site' not in globals() or self.staging == 'direct':\n            # Assume local and direct\n            return self.path\n        else:\n            # Return self.path for now\n            return self.path\n\n    def stage_in(self, site=None):\n        ''' The stage_in call transports the file from the site of origin\n        to the local site\n        '''\n        return self.dman.stage_in(self, site)\n\n    def stage_out(self):\n        ''' The stage_out call transports the file from local filesystem\n        to the origin site\n        '''\n        return self.dman.stage_out(self)\n\n    def set_data_future(self, df, site=None):\n        self.data_future[site] = df\n\n    def get_data_future(self, site):\n        return self.data_future.get(site)\n\n\nif __name__ == '__main__':\n\n    x = File('./files.py')\n", "path": "parsl/data_provider/files.py"}]}