Revert "Faster isiterable when x isn't iterable."

LincolnPuzey · LincolnPuzey · commit 5a3b8b14935b · 2022-09-22T15:52:07.000+08:00
This reverts commit f0831e7.
diff --git a/toolz/itertoolz.py b/toolz/itertoolz.py
@@ -283,7 +283,11 @@ def isiterable(x):
     >>> isiterable(5)
     False
     """
-    return hasattr(x, "__iter__")
+    try:
+        iter(x)
+        return True
+    except TypeError:
+        return False
 
 
 def isdistinct(seq):
