explicitly add precision to zero-padding #401

Job	Run time
Doc test (ubuntu-latest, 3.13)	31s
API doc completeness test (ubuntu-latest, 3.13)	24s
Script definition completeness test (ubuntu-latest, 3.13)	12s
Test coverage (ubuntu-latest, 3.10, <1.23, <6.1)	1m 7s
Style check (ubuntu-latest, 3.13)	13s
Unit tests (ubuntu-latest, 3.11, <2.0, <6.1)	46s
Unit tests (ubuntu-latest, 3.11, <2.0, <7.0)	48s
Unit tests (ubuntu-latest, 3.11, <2.1, <6.1)	53s
Unit tests (ubuntu-latest, 3.11, <2.1, <7.0)	49s
Unit tests (ubuntu-latest, 3.11, <2.2, <6.1)	47s
Unit tests (ubuntu-latest, 3.11, <2.2, <7.0)	49s
Unit tests (ubuntu-latest, 3.11, <3, <6.1)	46s
Unit tests (ubuntu-latest, 3.11, <3, <7.0)	50s
Unit tests (ubuntu-latest, 3.12, <2.0, <6.1)	53s
Unit tests (ubuntu-latest, 3.12, <2.0, <7.0)	52s
Unit tests (ubuntu-latest, 3.12, <2.1, <6.1)	53s
Unit tests (ubuntu-latest, 3.12, <2.1, <7.0)	50s
Unit tests (ubuntu-latest, 3.12, <2.2, <6.1)	54s
Unit tests (ubuntu-latest, 3.12, <2.2, <7.0)	51s
Unit tests (ubuntu-latest, 3.12, <3, <6.1)	57s
Unit tests (ubuntu-latest, 3.12, <3, <7.0)	51s
Unit tests (ubuntu-latest, 3.10, <1.23, <6.1)	56s
Unit tests (ubuntu-latest, 3.13, <3, <7.0)	1m 2s
	17m 54s

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