Fixed Issue #97. Validation of files when original .py file isn't present.

1 files changed, 4 insertions, 1 deletions

diff --git a/ply/lex.py b/ply/lex.py
index c45b8a0..842f05d 100644
--- a/ply/lex.py
+++ b/ply/lex.py
@@ -830,7 +830,10 @@ class LexerReflect(object):
     # -----------------------------------------------------------------------------
 
     def validate_module(self, module):
-        lines, linen = inspect.getsourcelines(module)
+        try:
+            lines, linen = inspect.getsourcelines(module)
+        except IOError:
+            return
 
         fre = re.compile(r'\s*def\s+(t_[a-zA-Z_0-9]*)\(')
         sre = re.compile(r'\s*(t_[a-zA-Z_0-9]*)\s*=')