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| � n t j d | � d S( s� Insert an entry into the list of warnings filters (at the front).
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'message' -- a regex that the warning message must match
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'append' -- if true, append to the list of filters
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manager. The objects appended to the list are arguments whose attributes
mirror the arguments to showwarning().
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c C s8 | | _ | d k r" t j d n | | _ t | _ d S( s� Specify whether to record warnings and if an alternative module
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