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pypy / _pytest / recwarn.py

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File _pytest/recwarn.py

 
     * ``pop(category=None)``: return last warning matching the category.
     * ``clear()``: clear list of warnings
+   
+    See http://docs.python.org/library/warnings.html for information
+    on warning categories.
     """
     if sys.version_info >= (2,7):
         import warnings