Python: Exception class that brings some structured data to caller

gistfile1.txt

import logging


class InsufficientFunds(PaymentSystemError):
    requested_amount: float = None
    direction: FinDirection = None
    account_balance: float = None

    def __init__(self, *args, direction=None, requested_amount=None, account_balance=None, **kwargs):
        self.direction = direction
        self.account_balance = account_balance
        self.requested_amount = requested_amount
        super().__init__(*args)

    def __repr__(self):
        text = f"{self.__class__.__name__}("
        if self.args:
            text += f"{', '.join(repr(x) if not isinstance(x, Enum) else str(x) for x in self.args)}"
            text += ", "
        for kw in ("direction", "account_balance", "requested_amount"):
            value = getattr(self, kw)
            text += f"{kw}={repr(value) if not isinstance(value, Enum) else str(value)}, "
        return text[:-2] + ")"

try:

  try:
    raise InsufficientFunds("Buggy code here", requested_amount=-1)
  except InsufficientFunds as e:
    if e.requested_amount < 0:
      print(f"A bug is somewhere deep inside of a call chain: requested amount {e.requested_amount} is less than zero!")
      raise
    else:
      print("Do something, log something, based on exception and its context data")
      raise
except Exception as e:
  print(repr(e))