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Issue #23865: close() methods in multiple modules now are idempotent and more

Browse source 
robust at shutdown. If needs to release multiple resources, they are released
even if errors are occured.
This commit is contained in:
Serhiy Storchaka 2015-04-10 13:24:41 +03:00
parent 842f00e725
commit 7e7a3dba5f
27 changed files with 299 additions and 197 deletions
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40
Lib/fileinput.py
View file

@ -238,8 +238,10 @@ class FileInput:
self.close()
def close(self):
self.nextfile()
self._files = ()
try:
self.nextfile()
finally:
self._files = ()
def __enter__(self):
return self
@ -281,23 +283,25 @@ class FileInput:
output = self._output
self._output = 0
if output:
output.close()
try:
if output:
output.close()
finally:
file = self._file
self._file = 0
try:
if file and not self._isstdin:
file.close()
finally:
backupfilename = self._backupfilename
self._backupfilename = 0
if backupfilename and not self._backup:
try: os.unlink(backupfilename)
except OSError: pass
file = self._file
self._file = 0
if file and not self._isstdin:
file.close()
backupfilename = self._backupfilename
self._backupfilename = 0
if backupfilename and not self._backup:
try: os.unlink(backupfilename)
except OSError: pass
self._isstdin = False
self._buffer = []
self._bufindex = 0
self._isstdin = False
self._buffer = []
self._bufindex = 0
def readline(self):
try: