Source code for treelib.exceptions


[docs]
class NodePropertyError(Exception):
    """Basic Node attribute error"""






[docs]
class NodeIDAbsentError(NodePropertyError):
    """Exception throwed if a node's identifier is unknown"""






[docs]
class NodePropertyAbsentError(NodePropertyError):
    """Exception throwed if a node's data property is not specified"""






[docs]
class MultipleRootError(Exception):
    """Exception throwed if more than one root exists in a tree."""






[docs]
class DuplicatedNodeIdError(Exception):
    """Exception throwed if an identifier already exists in a tree."""






[docs]
class LinkPastRootNodeError(Exception):
    """
    Exception throwed in Tree.link_past_node() if one attempts
    to "link past" the root node of a tree.
    """






[docs]
class InvalidLevelNumber(Exception):
    pass






[docs]
class LoopError(Exception):
    """
    Exception thrown if trying to move node B to node A's position
    while A is B's ancestor.
    """