gpgraph.exceptions¶

A two-class hierarchy.

Hierarchy¶

Exception
└── GpgraphError
    └── NeighborError

GpgraphError¶

class GpgraphError(Exception):
    """Base class for all gpgraph-specific errors."""

Raised by:

• GenotypePhenotypeGraph.gpm when accessed on a graph that has no map attached.
• GenotypePhenotypeGraph.add_model for unknown model strings, unknown fitness columns.
• GenotypePhenotypeGraph.model when called before add_model.
• from_gpm when the input is not a GenotypePhenotypeMap.

NeighborError¶

class NeighborError(GpgraphError):
    """Raised when neighbor detection cannot proceed."""

Raised by gpgraph.neighbors.get_neighbors for invalid cutoffs (negative, non-integer) or unknown neighbor_function arguments.

Catching pattern¶

from gpgraph.exceptions import GpgraphError, NeighborError

try:
    G = GenotypePhenotypeGraph.from_gpm(gpm, neighbor_function="unknown")
except NeighborError as e:
    log.error("Neighbor kernel unavailable: %s", e)
except GpgraphError as e:
    log.error("Graph construction failed: %s", e)

Library code that wants to swallow only gpgraph failures should catch GpgraphError (which covers NeighborError by subclass) and re-raise anything else.