a h @sfdZddgZddlZddlmZddlmZedddejdd d d dZ ejdd d dZ dS)z Read graphs in LEDA format. LEDA is a C++ class library for efficient data types and algorithms. Format ------ See http://www.algorithmic-solutions.info/leda_guide/graphs/leda_native_graph_fileformat.html read_leda parse_ledaN) NetworkXError) open_filerb)mode)ZgraphsUTF-8csfdd|D}t|}|S)aRead graph in LEDA format from path. Parameters ---------- path : file or string File or filename to read. Filenames ending in .gz or .bz2 will be uncompressed. Returns ------- G : NetworkX graph Examples -------- G=nx.read_leda('file.leda') References ---------- .. [1] http://www.algorithmic-solutions.info/leda_guide/graphs/leda_native_graph_fileformat.html c3s|]}|VqdS)N)decode.0lineencodingE/var/www/auris/lib/python3.9/site-packages/networkx/readwrite/leda.py ,zread_leda..)r)pathrlinesGrr rrsc Csft|trt|d}tdd|D}tdD] }t|q2tt|}|dkr^t}nt }tt|}i}td|dD].}t| d}|dkrt|}|||<q| d d| Dtt|}t|D]}zt|\}} } } Wn:ty6} z td |d| WYd } ~ n d } ~ 00|j|t||t| | d d dq|S)a|Read graph in LEDA format from string or iterable. Parameters ---------- lines : string or iterable Data in LEDA format. Returns ------- G : NetworkX graph Examples -------- G=nx.parse_leda(string) References ---------- .. [1] http://www.algorithmic-solutions.info/leda_guide/graphs/leda_native_graph_fileformat.html  cSs(g|] }|ds|dks|dqS))#rr) startswithrstripr rrr Iszparse_leda..z|{}| rcSsg|] \}}|qSrr)r isrrrrarz"Too few fields in LEDA.GRAPH edge N)label) isinstancestritersplitrangenextintnxZDiGraphZGraphrstripZadd_nodes_fromitems BaseExceptionrZadd_edge) rrZdurnnodesymbolmr tZreversalr#errrrrr1s:         **)r) __doc____all__Znetworkxr+Znetworkx.exceptionrZnetworkx.utilsr _dispatchrrrrrrs