(G)
return color
Find a bipartition of G, if one exists.
    Raises NonBipartite or returns dict mapping vertices
    to two colors (True and False).
Find a bipartition of G, if one exists.
    Raises NonBipartite or returns dict mapping vertices
    to two colors (True and False).
Find a bipartition of G if one exists . Raises NonBipartite or returns dict mapping vertices to two colors ( True and False ) .
def TwoColor(G):
    """
    Find a bipartition of G, if one exists.
    Raises NonBipartite or returns dict mapping vertices
    to two colors (True and False).
    """
    color = {}
    for v,w,edgetype in DFS_search(G):
        if edgetype is forward:
            color[w] = not color.get(v,False)
        elif edgetype is nontree and color[v] == color[w]:
            return None
    return color
def TwoColor ( G ) : color = { } for v , w , edgetype in DFS_search ( G ) : if edgetype is forward : color [ w ] = not color . get ( v , False ) elif edgetype is nontree and color [ v ] == color [ w ] : return None return color