From 6c9b8183817b9c8feae00a5e3122a49b605abf6f Mon Sep 17 00:00:00 2001
From: Gerrit Holl <gerrit.holl@dwd.de>
Date: Fri, 29 Jan 2021 14:53:28 +0100
Subject: [PATCH 1/2] Allow to pass pathlike-objects to FSFile

When constructing an FSFile object, allow to pass not only strings, but
any object meeting the os.PathLike protocol.
---
 satpy/readers/__init__.py   | 8 +++++---
 satpy/tests/test_readers.py | 6 ++++++
 2 files changed, 11 insertions(+), 3 deletions(-)

diff --git a/satpy/readers/__init__.py b/satpy/readers/__init__.py
index 3c0f788aab..2b25df8cef 100644
--- a/satpy/readers/__init__.py
+++ b/satpy/readers/__init__.py
@@ -546,7 +546,9 @@ class FSFile(os.PathLike):
     def __init__(self, file, fs=None):
         """Initialise the FSFile instance.
 
-        *file* can be string or an fsspec.OpenFile instance. In the latter case, the follow argument *fs* has no effect.
+        *file* can be string, an object implementing the PathLike protocol, or
+            an fsspec.OpenFile instance. In the latter case, the follow argument
+            *fs* has no effect.
         *fs* can be None or a fsspec filesystem instance.
         """
         try:
@@ -558,11 +560,11 @@ def __init__(self, file, fs=None):
 
     def __str__(self):
         """Return the string version of the filename."""
-        return self._file
+        return os.fspath(self._file)
 
     def __fspath__(self):
         """Comply with PathLike."""
-        return self._file
+        return os.fspath(self._file)
 
     def __repr__(self):
         """Representation of the object."""
diff --git a/satpy/tests/test_readers.py b/satpy/tests/test_readers.py
index ec28b6aff0..f6b84b3a2e 100644
--- a/satpy/tests/test_readers.py
+++ b/satpy/tests/test_readers.py
@@ -896,6 +896,12 @@ def test_fsfile_with_regular_filename_and_fs_spec_abides_pathlike(self):
         from satpy.readers import FSFile
         assert os.fspath(FSFile(self.random_string, fs=None)) == self.random_string
 
+    def test_fsfile_with_pathlike(self):
+        from satpy.readers import FSFile
+        from pathlib import Path
+        f = FSFile(Path(self.local_filename))
+        assert str(f) == os.fspath(f) == self.local_filename
+
     def test_fsfile_with_fs_open_file_abides_pathlike(self):
         """Test that FSFile abides PathLike for fsspec OpenFile instances."""
         from satpy.readers import FSFile

From 3dcf2408da25fd046c2b152a51015b6300778615 Mon Sep 17 00:00:00 2001
From: Gerrit Holl <gerrit.holl@dwd.de>
Date: Fri, 29 Jan 2021 16:33:39 +0100
Subject: [PATCH 2/2] Adapt docstring syntax in FSFile

---
 satpy/readers/__init__.py | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/satpy/readers/__init__.py b/satpy/readers/__init__.py
index 2b25df8cef..6cb6327d6f 100644
--- a/satpy/readers/__init__.py
+++ b/satpy/readers/__init__.py
@@ -546,10 +546,14 @@ class FSFile(os.PathLike):
     def __init__(self, file, fs=None):
         """Initialise the FSFile instance.
 
-        *file* can be string, an object implementing the PathLike protocol, or
-            an fsspec.OpenFile instance. In the latter case, the follow argument
-            *fs* has no effect.
-        *fs* can be None or a fsspec filesystem instance.
+        Args:
+            file (str, Pathlike, or OpenFile):
+                String, object implementing the `os.PathLike` protocol, or
+                an `fsspec.OpenFile` instance.  If passed an instance of
+                `fsspec.OpenFile`, the following argument ``fs`` has no
+                effect.
+            fs (fsspec filesystem, optional)
+                Object implementing the fsspec filesystem protocol.
         """
         try:
             self._file = file.path