Make exceptions from user code more readable #4975

Job	Run time
pytester (ubuntu-22.04, 3.10, latest, core)	10m 1s
pytester (ubuntu-22.04, 3.10, latest, ops)	26m 35s
pytester (ubuntu-22.04, 3.10, nightly, core)	10m 55s
pytester (ubuntu-22.04, 3.10, nightly, ops)	27m 2s
pytester (macOS-14, 3.10, latest, core)	7m 11s
pytester (macOS-14, 3.10, latest, ops)	22m 57s
pytester (macOS-14, 3.10, nightly, core)	6m 53s
pytester (macOS-14, 3.10, nightly, ops)	20m 38s
pytester (windows-2022, 3.10, latest, core)	23m 59s
pytester (windows-2022, 3.10, nightly, core)	24m 20s
pytester (ubuntu-22.04, 3.11, latest)	23m 6s
pytester (ubuntu-22.04, 3.12, latest)	28m 16s
testing-guardian	1s
	3h 51m 54s

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