Reverted docstring and changed return values instead

Tests/test_imageshow.py

@@ -78,7 +78,7 @@ def test_ipythonviewer():
         assert False
 
     im = hopper()
-    assert test_viewer.show(im) == 1
+    assert test_viewer.show(im)
 
 
 @pytest.mark.skipif(

src/PIL/ImageShow.py

@@ -50,12 +50,12 @@ def show(image, title=None, **options):
     :param image: An image object.
     :param title: Optional title. Not all viewers can display the title.
     :param \**options: Additional viewer options.
-    :returns: ``1`` if a suitable viewer was found, ``0`` otherwise.
+    :returns: ``True`` if a suitable viewer was found, ``False`` otherwise.
     """
     for viewer in _viewers:
         if viewer.show(image, title=title, **options):
-            return 1
-    return 0
+            return True
+    return False
 
 
 class Viewer:
@@ -124,7 +124,7 @@ def show_file(self, path=None, **options):
             else:
                 raise TypeError("Missing required argument: 'path'")
         os.system(self.get_command(path, **options))
-        return 1
+        return True
 
 
 # --------------------------------------------------------------------
@@ -188,7 +188,7 @@ def show_file(self, path=None, **options):
                 path,
             ]
         )
-        return 1
+        return True
 
 
 if sys.platform == "darwin":
@@ -251,7 +251,7 @@ def show_file(self, path=None, **options):
         ).stdout.strip()
         command = application[:-8].split(b".")[-1]
         self._run_and_remove_path([command, path])
-        return 1
+        return True
 
 
 class DisplayViewer(UnixViewer):
@@ -289,7 +289,7 @@ def show_file(self, path=None, **options):
         args.append(path)
 
         self._run_and_remove_path(args)
-        return 1
+        return True
 
 
 class GmDisplayViewer(UnixViewer):
@@ -318,7 +318,7 @@ def show_file(self, path=None, **options):
             else:
                 raise TypeError("Missing required argument: 'path'")
         self._run_and_remove_path(["gm", "display", path])
-        return 1
+        return True
 
 
 class EogViewer(UnixViewer):
@@ -347,7 +347,7 @@ def show_file(self, path=None, **options):
             else:
                 raise TypeError("Missing required argument: 'path'")
         self._run_and_remove_path(["eog", "-n", path])
-        return 1
+        return True
 
 
 class XVViewer(UnixViewer):
@@ -387,7 +387,7 @@ def show_file(self, path=None, **options):
         args.append(path)
 
         self._run_and_remove_path(args)
-        return 1
+        return True
 
 
 if sys.platform not in ("win32", "darwin"):  # unixoids
@@ -408,7 +408,7 @@ class IPythonViewer(Viewer):
 
     def show_image(self, image, **options):
         ipython_display(image)
-        return 1
+        return True
 
 
 try: