REFACTOR: improve import_nastran method #93

Job	Run time
Check the title of the pull request	5s
Documentation style check	25s
Build wheelhouse and smoke tests (ubuntu-latest, 3.7)	2m 29s
Build wheelhouse and smoke tests (ubuntu-latest, 3.8)	2m 19s
Build wheelhouse and smoke tests (ubuntu-latest, 3.9)	2m 59s
Build wheelhouse and smoke tests (ubuntu-latest, 3.10)	2m 20s
Build wheelhouse and smoke tests (ubuntu-latest, 3.11)	2m 19s
Build wheelhouse and smoke tests (windows-latest, 3.7)	4m 10s
Build wheelhouse and smoke tests (windows-latest, 3.8)	4m 46s
Build wheelhouse and smoke tests (windows-latest, 3.9)	4m 30s
Build wheelhouse and smoke tests (windows-latest, 3.10)	4m 9s
Build wheelhouse and smoke tests (windows-latest, 3.11)	4m 20s
Documentation build without examples	28m 56s
Documentation build with examples	0s
Testing and coverage (Linux)	37m 26s
Testing solvers and coverage (Linux)	40m 25s
Testing solvers and coverage (Windows)	30m 48s
Testing IronPython and coverage (Windows)	1m 11s
Testing and coverage (Windows)	23m 50s
Package library	29s
Release project	0s
Upload release documentation	0s
Deploy stable docs index	0s
	3h 17m 56s

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