bpo-30432: FileInput doesn't accept PathLike objects for file names (#1732)

* Allow FileInput to accept a single PathLike object as a parameter for `files`

Fixes

bpo-30432: FileInput doesn't accept PathLike objects for file names

* Address comments from @ambv

1 files changed, 15 insertions, 0 deletions

diff --git a/Lib/test/test_fileinput.py b/Lib/test/test_fileinput.py
index 565633fccc..5df810c8f9 100644
--- a/Lib/test/test_fileinput.py
+++ b/Lib/test/test_fileinput.py
@@ -21,6 +21,7 @@ except ImportError:
 
 from io import BytesIO, StringIO
 from fileinput import FileInput, hook_encoded
+from pathlib import Path
 
 from test.support import verbose, TESTFN, check_warnings
 from test.support import unlink as safe_unlink
@@ -530,6 +531,20 @@ class FileInputTests(unittest.TestCase):
             self.assertRaises(StopIteration, next, fi)
             self.assertEqual(src.linesread, [])
 
+    def test_pathlib_file(self):
+        t1 = None
+        try:
+            t1 = Path(writeTmp(1, ["Pathlib file."]))
+            with FileInput(t1) as fi:
+                line = fi.readline()
+                self.assertEqual(line, 'Pathlib file.')
+                self.assertEqual(fi.lineno(), 1)
+                self.assertEqual(fi.filelineno(), 1)
+                self.assertEqual(fi.filename(), os.fspath(t1))
+        finally:
+            remove_tempfiles(t1)
+
+
 class MockFileInput:
     """A class that mocks out fileinput.FileInput for use during unit tests"""