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Does parsing of ETag-related headers: If-None-Matches, If-Matches

Also If-Range parsing
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parse_datetserialize_date(t_rx_etag(theader_docstringtwarn_deprecationtAnyETagtNoETagtETagMatchertIfRanget
etag_propertycsbt�|�}|d7}���fd�}�fd�}�fd�}t|||d|�S(Ns  Converts it as a Etag.cs3|jj��}|s�Stj|d��SdS(Ntstrong(tenvirontgetRtparse(treqtvalue(tdefaulttkeyR
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s;/opt/alt/python27/lib/python2.7/site-packages/webob/etag.pyR	s
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    Represents an ETag of *, or a missing ETag when matching is 'safe'
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weak_match=scCsdS(Nt*((R!((s;/opt/alt/python27/lib/python2.7/site-packages/webob/etag.pyt__str__@s(	t__name__t
__module__t__doc__R"R$t__bool__R'R(R*(((s;/opt/alt/python27/lib/python2.7/site-packages/webob/etag.pyR -s				t_NoETagcBsAeZdZd�Zd�ZeZd�Zd�Zd�ZRS(s;
    Represents a missing ETag when matching is unsafe
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||_dS(N(tetags(R!R1((s;/opt/alt/python27/lib/python2.7/site-packages/webob/etag.pyt__init__ascCs
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        Parse this from a header value
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        Parse this from a header value.
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        Return True if the If-Range header matches the given etag or last_modified
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