1 files changed, 7 insertions, 0 deletions
diff --git a/isort/main.py b/isort/main.py
index 5d48f84c..b9b86687 100644
--- a/isort/main.py
+++ b/isort/main.py
@@ -4,6 +4,7 @@ import functools
 import glob
 import os
 import re
+import stat
 import sys
 from pathlib import Path
 from typing import Any, Dict, Iterable, Iterator, List, MutableMapping, Optional, Sequence
@@ -45,6 +46,12 @@ def is_python_file(path: str) -> bool:
         return False
 
     try:
+        if stat.S_ISFIFO(os.stat(path).st_mode):
+            return False
+    except OSError:
+        pass
+
+    try:
         with open(path, "rb") as fp:
             line = fp.readline(100)
     except OSError: