improve the "ASCReader" read performance. #663

Job	Run time
docs	1m 7s
build	23s
format	28s
static-code-analysis	35s
test (ubuntu-latest, false, 3.8)	2m 41s
test (ubuntu-latest, false, 3.9)	2m 38s
test (ubuntu-latest, false, 3.10)	2m 38s
test (ubuntu-latest, false, 3.11)	2m 35s
test (ubuntu-latest, false, 3.12)	2m 55s
test (ubuntu-latest, false, pypy-3.8)	3m 4s
test (ubuntu-latest, false, pypy-3.9)	3m 0s
test (macos-latest, false, 3.8)	4m 27s
test (macos-latest, false, 3.9)	2m 44s
test (macos-latest, false, 3.10)	1m 38s
test (macos-latest, false, 3.11)	2m 2s
test (macos-latest, false, 3.12)	2m 4s
test (macos-latest, false, pypy-3.8)	5m 38s
test (macos-latest, false, pypy-3.9)	6m 8s
test (windows-latest, false, 3.8)	1m 50s
test (windows-latest, false, 3.9)	1m 49s
test (windows-latest, false, 3.10)	1m 39s
test (windows-latest, false, 3.11)	1m 44s
test (windows-latest, false, 3.12)	1m 39s
test (windows-latest, false, pypy-3.8)	5m 31s
test (windows-latest, false, pypy-3.9)	6m 0s
upload_pypi	0s
coveralls	7s
	1h 7m 4s

Provide feedback