我相信python库中没有
>>> def which(pgm):
path=os.getenv('PATH')
for p in path.split(os.path.pathsep):
p=os.path.join(p,pgm)
if os.path.exists(p) and os.access(p,os.X_OK):
return p
>>> os.which=which
>>> os.which('ls.exe')
'C:\\GNUwin32\\bin\\ls.exe'
602392714
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