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utils.programs_available(): add cache

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InsanePrawn 2022-08-20 02:20:47 +02:00
parent 8a7f78261f
commit 27e7fe9a10
1 changed files with 8 additions and 2 deletions
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10
utils.py
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@ -8,12 +8,18 @@ from typing import Optional, Union, Sequence
from exec.cmd import run_cmd, run_root_cmd
_programs_available = dict[str, bool]()
def programs_available(programs: Union[str, Sequence[str]]) -> bool:
def programs_available(programs: Union[str, Sequence[str]], lazy: bool = True) -> bool:
global _programs_available
if type(programs) is str:
programs = [programs]
for program in programs:
if not which(program):
if program not in _programs_available or not lazy:
avail = bool(which(program))
_programs_available[program] = avail
if not _programs_available[program]:
return False
return True