1 files changed, 2 insertions, 0 deletions
diff --git a/ply/lex.py b/ply/lex.py
index eb003c2..c81abe5 100644
--- a/ply/lex.py
+++ b/ply/lex.py
@@ -1038,6 +1038,8 @@ def lex(module=None, object=None, debug=False, optimize=False, lextab='lextab',
             outputdir = os.path.dirname(srcfile)
         try:
             lexobj.writetab(lextab, outputdir)
+            if lextab in sys.modules:
+                del sys.modules[lextab]
         except IOError as e:
             errorlog.warning("Couldn't write lextab module %r. %s" % (lextab, e))