parse_quantity raises decimal.Overflow instead of ValueError for some large quantities #2735

What happened (please include outputs or screenshots):

While testing an experimental version of Perch, we found the following and figured it was worth a report.

parse_quantity raises ValueError for malformed quantities, but a quantity whose exponent overflows the decimal context escapes as decimal.Overflow:

from kubernetes.utils.quantity import parse_quantity

parse_quantity("abc")
# ValueError: Invalid number format: abc

parse_quantity("2.e388635141Ki")
# decimal.Overflow: [<class 'decimal.Overflow'>]

What you expected to happen:

A ValueError, like other quantities it can't handle, so callers that catch ValueError around it keep working.

How to reproduce it (as minimally and precisely as possible):

Run the snippet above against master. No cluster is needed.

Anything else we need to know?:

It's raised at kubernetes/utils/quantity.py:85, return number * (base ** exponent). The API server won't produce a quantity this large, so in practice it shows up with hand-written or third-party manifests. Catching decimal.DecimalException there and raising ValueError would keep the error type consistent.

Environment:

• Kubernetes version (kubectl version): not needed, no cluster involved
• OS (e.g., MacOS 10.13.6): macOS 26.2 (arm64)
• Python version (python --version): 3.14.2
• Python client version (pip list | grep kubernetes): 37.0.0+snapshot (master, bb9199f)