Closes #13258: Use callable() built-in in the standard library.
diff --git a/Lib/fileinput.py b/Lib/fileinput.py
index a25a021..554beb2 100644
--- a/Lib/fileinput.py
+++ b/Lib/fileinput.py
@@ -225,10 +225,11 @@
raise ValueError("FileInput opening mode must be one of "
"'r', 'rU', 'U' and 'rb'")
self._mode = mode
- if inplace and openhook:
- raise ValueError("FileInput cannot use an opening hook in inplace mode")
- elif openhook and not hasattr(openhook, '__call__'):
- raise ValueError("FileInput openhook must be callable")
+ if openhook:
+ if inplace:
+ raise ValueError("FileInput cannot use an opening hook in inplace mode")
+ if not callable(openhook):
+ raise ValueError("FileInput openhook must be callable")
self._openhook = openhook
def __del__(self):