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Errors & debugging

Handle failures gracefully, raise helpful errors, and debug with confidence.

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Errors & debugging easy

How to Dump a Debugging Repr for Unknown Types in Python

Build a fallback repr that shows dataclass fields or object attributes for any value, handy when debugging unknown types.

debugging repr dataclasses
Python 
import dataclasses
from typing import Any


@dataclasses.dataclass
class Sample:
    name: str
    values: list[int]


def dump_repr(obj: Any) -> str:
    """Return a concise but complete repr for debugging unknown types."""
    if dataclasses.is_dataclass(obj):
        fields = ", ".join(
            f"{field.name}={…
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