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Avoid runtime errors during shutdown of CLI plugins that use check_css

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Kovid Goyal 2020-02-16 18:20:06 +05:30
parent 1d35b78601
commit fe61a72b83
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1 changed files with 6 additions and 1 deletions
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7
src/calibre/ebooks/oeb/polish/check/css.py
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@ -222,7 +222,12 @@ class Pool(object):
self.working = False self.working = False
def shutdown(self): def shutdown(self):
tuple(map(sip.delete, self.workers))
def safe_delete(x):
if not sip.isdeleted(x):
sip.delete(x)
tuple(map(safe_delete, self.workers))
self.workers = [] self.workers = []