all Python 3Exceptionsexception

decimal.Rounded

module exceptions

A decimal result was rounded (even if no precision was lost).

Syntax

raise decimal.Rounded

Treat this as a signal rather than an error: its trap is off by default, and you detect it by reading getcontext().flags[decimal.Rounded] — the flag is sticky and stays set until you call clear_flags. Do not confuse it with Inexact: Rounded fires whenever digits are discarded at all, even discarded zeros that leave the value unchanged, while Inexact fires only when something non-zero was actually lost.

Examples

import decimal
try:
    raise decimal.Rounded
except decimal.Rounded as e:
    print(type(e).__name__)   # → Rounded

See also

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