wg7,dZgdZddlZddlmZddZedd dd Zejdd  dd Z edd ejdd  ddZ ddZ ejdd  ddZ y)aM ********** Edge Lists ********** Read and write NetworkX graphs as edge lists. The multi-line adjacency list format is useful for graphs with nodes that can be meaningfully represented as strings. With the edgelist format simple edge data can be stored but node or graph data is not. There is no way of representing isolated nodes unless the node has a self-loop edge. Format ------ You can read or write three formats of edge lists with these functions. Node pairs with no data:: 1 2 Python dictionary as data:: 1 2 {'weight':7, 'color':'green'} Arbitrary data:: 1 2 7 green )generate_edgelistwrite_edgelistparse_edgelist read_edgelistread_weighted_edgelistwrite_weighted_edgelistN) open_fileTc#K|durK|jdD]5\}}||tf}|jtt|7y|dur@|jdD]*\}}||f}|jtt|,y|jdD]F\}}||g} |j fd|D|jtt|Hy#t $rY/wxYww)aGenerate a single line of the graph G in edge list format. Parameters ---------- G : NetworkX graph delimiter : string, optional Separator for node labels data : bool or list of keys If False generate no edge data. If True use a dictionary representation of edge data. If a list of keys use a list of data values corresponding to the keys. Returns ------- lines : string Lines of data in adjlist format. Examples -------- >>> G = nx.lollipop_graph(4, 3) >>> G[1][2]["weight"] = 3 >>> G[3][4]["capacity"] = 12 >>> for line in nx.generate_edgelist(G, data=False): ... print(line) 0 1 0 2 0 3 1 2 1 3 2 3 3 4 4 5 5 6 >>> for line in nx.generate_edgelist(G): ... print(line) 0 1 {} 0 2 {} 0 3 {} 1 2 {'weight': 3} 1 3 {} 2 3 {} 3 4 {'capacity': 12} 4 5 {} 5 6 {} >>> for line in nx.generate_edgelist(G, data=["weight"]): ... print(line) 0 1 0 2 0 3 1 2 3 1 3 2 3 3 4 4 5 5 6 See Also -------- write_adjlist, read_adjlist T)dataFc3(K|] }| ywN).0kds `/home/mcse/projects/flask/flask-venv/lib/python3.12/site-packages/networkx/readwrite/edgelist.py z$generate_edgelist..xs,!1,sN)edgesdictjoinmapstrextendKeyError)G delimiterr uvers @rrr+sB t|wwDw) .GAq!1d1g A..S!- - . GGG' .DAq1A..S!- - .wwDw) .GAq!AA ,t,,..S!- -  .  s*B1D5C3$D3 C?<D>C??Dwb)modecrt|||D]'}|dz }|j|j|)y)aWrite graph as a list of edges. Parameters ---------- G : graph A NetworkX graph path : file or string File or filename to write. If a file is provided, it must be opened in 'wb' mode. Filenames ending in .gz or .bz2 will be compressed. comments : string, optional The character used to indicate the start of a comment delimiter : string, optional The string used to separate values. The default is whitespace. data : bool or list, optional If False write no edge data. If True write a string representation of the edge data dictionary.. If a list (or other iterable) is provided, write the keys specified in the list. encoding: string, optional Specify which encoding to use when writing file. Examples -------- >>> G = nx.path_graph(4) >>> nx.write_edgelist(G, "test.edgelist") >>> G = nx.path_graph(4) >>> fh = open("test.edgelist", "wb") >>> nx.write_edgelist(G, fh) >>> nx.write_edgelist(G, "test.edgelist.gz") >>> nx.write_edgelist(G, "test.edgelist.gz", data=False) >>> G = nx.Graph() >>> G.add_edge(1, 2, weight=7, color="red") >>> nx.write_edgelist(G, "test.edgelist", data=False) >>> nx.write_edgelist(G, "test.edgelist", data=["color"]) >>> nx.write_edgelist(G, "test.edgelist", data=["color", "weight"]) See Also -------- read_edgelist write_weighted_edgelist  N)rwriteencode)rpathcommentsrr encodinglines rrr~s;Z"!Y5*   4;;x()*)graphs returns_graphc ddlm}tjd|}|D]]}||j |} | dk\r|d| }|s$|j dj |} t| dkrS| jd} | jd} | } | || } || } t| dk(s|d uri}n|d urI |dk(rdj| }nd j| }t||j}n^t| t|k7rtd| d|di}t|| D]$\\}}} ||}|j!||i&|j"| | fi|`|S#t$r}td| d| d|d |d}~wwxYw#t$r}td | d|d}~wwxYw#t$r}td|d|d|d |d}~wwxYw)aParse lines of an edge list representation of a graph. Parameters ---------- lines : list or iterator of strings Input data in edgelist format comments : string, optional Marker for comment lines. Default is `'#'`. To specify that no character should be treated as a comment, use ``comments=None``. delimiter : string, optional Separator for node labels. Default is `None`, meaning any whitespace. create_using : NetworkX graph constructor, optional (default=nx.Graph) Graph type to create. If graph instance, then cleared before populated. nodetype : Python type, optional Convert nodes to this type. Default is `None`, meaning no conversion is performed. data : bool or list of (label,type) tuples If `False` generate no edge data or if `True` use a dictionary representation of edge data or a list tuples specifying dictionary key names and types for edge data. Returns ------- G: NetworkX Graph The graph corresponding to lines Examples -------- Edgelist with no data: >>> lines = ["1 2", "2 3", "3 4"] >>> G = nx.parse_edgelist(lines, nodetype=int) >>> list(G) [1, 2, 3, 4] >>> list(G.edges()) [(1, 2), (2, 3), (3, 4)] Edgelist with data in Python dictionary representation: >>> lines = ["1 2 {'weight': 3}", "2 3 {'weight': 27}", "3 4 {'weight': 3.0}"] >>> G = nx.parse_edgelist(lines, nodetype=int) >>> list(G) [1, 2, 3, 4] >>> list(G.edges(data=True)) [(1, 2, {'weight': 3}), (2, 3, {'weight': 27}), (3, 4, {'weight': 3.0})] Edgelist with data in a list: >>> lines = ["1 2 3", "2 3 27", "3 4 3.0"] >>> G = nx.parse_edgelist(lines, nodetype=int, data=(("weight", float),)) >>> list(G) [1, 2, 3, 4] >>> list(G.edges(data=True)) [(1, 2, {'weight': 3.0}), (2, 3, {'weight': 27.0}), (3, 4, {'weight': 3.0})] See Also -------- read_weighted_edgelist r) literal_evalNr$zFailed to convert nodes ,z to type .FT zFailed to convert edge data (z) to dictionary.z Edge data z and data_keys z are not the same lengthzFailed to convert z data )astr/nx empty_graphfindrstripsplitlenpop Exception TypeErrorrrstrip IndexErrorzipupdateadd_edge)linesr(r create_usingnodetyper r/rr*psrrrerredgedata edgedata_stredge_key edge_type edge_values rrrsY~! q,'A6%   (#AAvBQx KK  # #I . q6A:  EE!H EE!H    QKQK q6Q;$%-H T\ ##&88A;L#&88A;L \-?-?-A BC1vT"  ?4&8PQH58q\ 81%9z!*:!6J : 67 8  1a$8$m6%n HK .qc1#YxjJ   3A36FG !#,XJfZLI##,+Q0sIFAF) G  F& F!!F&) G2GG G.G))G.rbc<fd|D}t||||||S)aRead a graph from a list of edges. Parameters ---------- path : file or string File or filename to read. If a file is provided, it must be opened in 'rb' mode. Filenames ending in .gz or .bz2 will be uncompressed. comments : string, optional The character used to indicate the start of a comment. To specify that no character should be treated as a comment, use ``comments=None``. delimiter : string, optional The string used to separate values. The default is whitespace. create_using : NetworkX graph constructor, optional (default=nx.Graph) Graph type to create. If graph instance, then cleared before populated. nodetype : int, float, str, Python type, optional Convert node data from strings to specified type data : bool or list of (label,type) tuples Tuples specifying dictionary key names and types for edge data edgetype : int, float, str, Python type, optional OBSOLETE Convert edge data from strings to specified type and use as 'weight' encoding: string, optional Specify which encoding to use when reading file. Returns ------- G : graph A networkx Graph or other type specified with create_using Examples -------- >>> nx.write_edgelist(nx.path_graph(4), "test.edgelist") >>> G = nx.read_edgelist("test.edgelist") >>> fh = open("test.edgelist", "rb") >>> G = nx.read_edgelist(fh) >>> fh.close() >>> G = nx.read_edgelist("test.edgelist", nodetype=int) >>> G = nx.read_edgelist("test.edgelist", create_using=nx.DiGraph) Edgelist with data in a list: >>> textline = "1 2 3" >>> fh = open("test.edgelist", "w") >>> d = fh.write(textline) >>> fh.close() >>> G = nx.read_edgelist("test.edgelist", nodetype=int, data=(("weight", float),)) >>> list(G) [1, 2] >>> list(G.edges(data=True)) [(1, 2, {'weight': 3.0})] See parse_edgelist() for more examples of formatting. See Also -------- parse_edgelist write_edgelist Notes ----- Since nodes must be hashable, the function nodetype must return hashable types (e.g. int, float, str, frozenset - or tuples of those, etc.) c3dK|]'}t|tr|n|j)ywr ) isinstancerdecode)rr*r)s rrz read_edgelist..ys( W$Zc*T H0E E Ws-0)r(rrDrEr )r) r'r(rrDrEr edgetyper)rCs ` rrr,s1Z XRV WE  !   r+c&t||||d|y)aAWrite graph G as a list of edges with numeric weights. Parameters ---------- G : graph A NetworkX graph path : file or string File or filename to write. If a file is provided, it must be opened in 'wb' mode. Filenames ending in .gz or .bz2 will be compressed. comments : string, optional The character used to indicate the start of a comment delimiter : string, optional The string used to separate values. The default is whitespace. encoding: string, optional Specify which encoding to use when writing file. Examples -------- >>> G = nx.Graph() >>> G.add_edge(1, 2, weight=7) >>> nx.write_weighted_edgelist(G, "test.weighted.edgelist") See Also -------- read_edgelist write_edgelist read_weighted_edgelist )weight)r(rr r)N)r)rr'r(rr)s rrrs<    r+c 4t|||||dtff|S)a;Read a graph as list of edges with numeric weights. Parameters ---------- path : file or string File or filename to read. If a file is provided, it must be opened in 'rb' mode. Filenames ending in .gz or .bz2 will be uncompressed. comments : string, optional The character used to indicate the start of a comment. delimiter : string, optional The string used to separate values. The default is whitespace. create_using : NetworkX graph constructor, optional (default=nx.Graph) Graph type to create. If graph instance, then cleared before populated. nodetype : int, float, str, Python type, optional Convert node data from strings to specified type encoding: string, optional Specify which encoding to use when reading file. Returns ------- G : graph A networkx Graph or other type specified with create_using Notes ----- Since nodes must be hashable, the function nodetype must return hashable types (e.g. int, float, str, frozenset - or tuples of those, etc.) Example edgelist file format. With numeric edge data:: # read with # >>> G=nx.read_weighted_edgelist(fh) # source target data a b 1 a c 3.14159 d e 42 See Also -------- write_weighted_edgelist rU)r(rrDrEr r))rfloat)r'r(rrDrEr)s rrrs/j  ! ! r+)r3T)#r3Tutf-8)rXNNNT)rXNNNTNrY)rXr3rY)rXNNNrY) __doc____all__networkxr5networkx.utilsr rr _dispatchablerrrrrr+rr_s: $P.f 14.*.*bT2PTx 3x v 14T2   S3Sl%PT2   <3<r+