Avoid invoking the parser/compiler just to test the presence of a function.

03dcc73c · Amaury Forgeot d'Arc · 6a098d20 · 03dcc73c
Commit 03dcc73c authored Jun 09, 2009 by Amaury Forgeot d'Arc
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Showing with 1 addition and 5 deletions

Lib/os.py Lib/os.py +1 -5

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--- a/Lib/os.py
+++ b/Lib/os.py
@@ -514,11 +514,7 @@ def getenv(key, default=None):
 __all__.append("getenv")
 def _exists(name):
-    try:
+    return name in globals()
-        eval(name)
-        return True
-    except NameError:
-        return False
 # Supply spawn*() (probably only for Unix)
 if _exists("fork") and not _exists("spawnv") and _exists("execv"):