def load_object(self, value):
"""The reversal of :meth:`dump_object`. This might be called with
None.
"""
if value is None:
return None
if value.startswith(b'!'):
try:
return pickle.loads(value[1:])
except pickle.PickleError:
return None
try:
return int(value)
except ValueError:
# before 0.8 we did not have serialization. Still support that.
return value
python类PickleError()的实例源码
def load_object(self, value):
"""The reversal of :meth:`dump_object`. This might be called with
None.
"""
if value is None:
return None
if value.startswith(b'!'):
try:
return pickle.loads(value[1:])
except pickle.PickleError:
return None
try:
return int(value)
except ValueError:
# before 0.8 we did not have serialization. Still support that.
return value
def get(self, key, default=None, version=None, acquire_lock=True):
key = self.make_key(key, version=version)
self.validate_key(key)
pickled = None
with (self._lock.reader() if acquire_lock else dummy()):
if not self._has_expired(key):
pickled = self._cache[key]
if pickled is not None:
try:
return pickle.loads(pickled)
except pickle.PickleError:
return default
with (self._lock.writer() if acquire_lock else dummy()):
try:
del self._cache[key]
del self._expire_info[key]
except KeyError:
pass
return default
def load_object(self, value):
"""The reversal of :meth:`dump_object`. This might be called with
None.
"""
if value is None:
return None
if value.startswith(b'!'):
try:
return pickle.loads(value[1:])
except pickle.PickleError:
return None
try:
return int(value)
except ValueError:
# before 0.8 we did not have serialization. Still support that.
return value
def get(self, key, default=None, version=None, acquire_lock=True):
key = self.make_key(key, version=version)
self.validate_key(key)
pickled = None
with (self._lock.reader() if acquire_lock else dummy()):
if not self._has_expired(key):
pickled = self._cache[key]
if pickled is not None:
try:
return pickle.loads(pickled)
except pickle.PickleError:
return default
with (self._lock.writer() if acquire_lock else dummy()):
try:
del self._cache[key]
del self._expire_info[key]
except KeyError:
pass
return default
def load_object(self, value):
"""The reversal of :meth:`dump_object`. This might be called with
None.
"""
if value is None:
return None
if value.startswith(b'!'):
try:
return pickle.loads(value[1:])
except pickle.PickleError:
return None
try:
return int(value)
except ValueError:
# before 0.8 we did not have serialization. Still support that.
return value
def load_object(self, value):
"""The reversal of :meth:`dump_object`. This might be called with
None.
"""
if value is None:
return None
if value.startswith(b'!'):
try:
return pickle.loads(value[1:])
except pickle.PickleError:
return None
try:
return int(value)
except ValueError:
# before 0.8 we did not have serialization. Still support that.
return value
def load_object(self, value):
"""The reversal of :meth:`dump_object`. This might be called with
None.
"""
if value is None:
return None
if value.startswith(b'!'):
try:
return pickle.loads(value[1:])
except pickle.PickleError:
return None
try:
return int(value)
except ValueError:
# before 0.8 we did not have serialization. Still support that.
return value
def load_object(self, value):
"""The reversal of :meth:`dump_object`. This might be called with
None.
"""
if value is None:
return None
if value.startswith(b'!'):
try:
return pickle.loads(value[1:])
except pickle.PickleError:
return None
try:
return int(value)
except ValueError:
# before 0.8 we did not have serialization. Still support that.
return value
def get_settings_from_file(filepath):
s = None
try:
settings_file = os.path.join(filepath, "settings")
f = open(settings_file, "rb")
s = pickle.load(f)
f.close()
except EOFError as eofe:
print("eof error:", eofe)
except pickle.PickleError as pe:
print("pickle error:", pe)
except IOError as ioe:
# Normally this error means it is the 1st run and the settings file
# does not exist
pass
except Exception as exc:
print("Cannot restore settings:", exc)
#if gv.verbose:
# print "values read from settings file"
# print "colour_settings:",s.colour_settings
return s
def get(self, key, default=None, version=None, acquire_lock=True):
key = self.make_key(key, version=version)
self.validate_key(key)
pickled = None
with (self._lock.reader() if acquire_lock else dummy()):
if not self._has_expired(key):
pickled = self._cache[key]
if pickled is not None:
try:
return pickle.loads(pickled)
except pickle.PickleError:
return default
with (self._lock.writer() if acquire_lock else dummy()):
try:
del self._cache[key]
del self._expire_info[key]
except KeyError:
pass
return default
def load_object(self, value):
"""The reversal of :meth:`dump_object`. This might be called with
None.
"""
if value is None:
return None
if value.startswith(b'!'):
try:
return pickle.loads(value[1:])
except pickle.PickleError:
return None
try:
return int(value)
except ValueError:
# before 0.8 we did not have serialization. Still support that.
return value
def load_object(self, value):
"""The reversal of :meth:`dump_object`. This might be callde with
None.
"""
if value is None:
return None
if value.startswith(b'!'):
try:
return pickle.loads(value[1:])
except pickle.PickleError:
return None
try:
return int(value)
except ValueError:
# before 0.8 we did not have serialization. Still support that.
return value
def get(self, key, default=None, version=None, acquire_lock=True):
key = self.make_key(key, version=version)
self.validate_key(key)
pickled = None
with (self._lock.reader() if acquire_lock else dummy()):
if not self._has_expired(key):
pickled = self._cache[key]
if pickled is not None:
try:
return pickle.loads(pickled)
except pickle.PickleError:
return default
with (self._lock.writer() if acquire_lock else dummy()):
try:
del self._cache[key]
del self._expire_info[key]
except KeyError:
pass
return default
def load_object(self, value):
"""The reversal of :meth:`dump_object`. This might be called with
None.
"""
if value is None:
return None
if value.startswith(b'!'):
try:
return pickle.loads(value[1:])
except pickle.PickleError:
return None
try:
return int(value)
except ValueError:
# before 0.8 we did not have serialization. Still support that.
return value
def load_object(self, value):
"""The reversal of :meth:`dump_object`. This might be called with
None.
"""
if value is None:
return None
if value.startswith(b'!'):
try:
return pickle.loads(value[1:])
except pickle.PickleError:
return None
try:
return int(value)
except ValueError:
# before 0.8 we did not have serialization. Still support that.
return value
def load_object(self, value):
"""The reversal of :meth:`dump_object`. This might be callde with
None.
"""
if value is None:
return None
if value.startswith(b'!'):
try:
return pickle.loads(value[1:])
except pickle.PickleError:
return None
try:
return int(value)
except ValueError:
# before 0.8 we did not have serialization. Still support that.
return value
def do_open(self, flags, replace):
if self.loaded:
self.flags = flags
return
select = sa.select([self.table.c.data],
(self.table.c.namespace == self.namespace))
result = self.bind.execute(select).fetchone()
if not result:
self._is_new = True
self.hash = {}
else:
self._is_new = False
try:
self.hash = result['data']
except (IOError, OSError, EOFError, pickle.PickleError,
pickle.PickleError):
log.debug("Couln't load pickle data, creating new storage")
self.hash = {}
self._is_new = True
self.flags = flags
self.loaded = True
def do_open(self, flags, replace):
# If we already loaded the data, don't bother loading it again
if self.loaded:
self.flags = flags
return
cache = self.cache
result = sa.select([cache.c.data],
cache.c.namespace == self.namespace
).execute().fetchone()
if not result:
self._is_new = True
self.hash = {}
else:
self._is_new = False
try:
self.hash = result['data']
except (IOError, OSError, EOFError, pickle.PickleError,
pickle.PickleError):
log.debug("Couln't load pickle data, creating new storage")
self.hash = {}
self._is_new = True
self.flags = flags
self.loaded = True
def load_object(self, value):
"""The reversal of :meth:`dump_object`. This might be called with
None.
"""
if value is None:
return None
if value.startswith(b'!'):
try:
return pickle.loads(value[1:])
except pickle.PickleError:
return None
try:
return int(value)
except ValueError:
# before 0.8 we did not have serialization. Still support that.
return value
def load_object(self, value):
"""The reversal of :meth:`dump_object`. This might be called with
None.
"""
if value is None:
return None
if value.startswith(b'!'):
try:
return pickle.loads(value[1:])
except pickle.PickleError:
return None
try:
return int(value)
except ValueError:
# before 0.8 we did not have serialization. Still support that.
return value
def load_object(self, value):
"""The reversal of :meth:`dump_object`. This might be called with
None.
"""
if value is None:
return None
if value.startswith(b'!'):
try:
return pickle.loads(value[1:])
except pickle.PickleError:
return None
try:
return int(value)
except ValueError:
# before 0.8 we did not have serialization. Still support that.
return value
def load_object(self, value):
"""The reversal of :meth:`dump_object`. This might be called with
None.
"""
if value is None:
return None
if value.startswith(b'!'):
try:
return pickle.loads(value[1:])
except pickle.PickleError:
return None
try:
return int(value)
except ValueError:
# before 0.8 we did not have serialization. Still support that.
return value
def test_reduce_bad_iterator(self):
# Issue4176: crash when 4th and 5th items of __reduce__()
# are not iterators
class C(object):
def __reduce__(self):
# 4th item is not an iterator
return list, (), None, [], None
class D(object):
def __reduce__(self):
# 5th item is not an iterator
return dict, (), None, None, []
# Protocol 0 is less strict and also accept iterables.
for proto in protocols:
try:
self.dumps(C(), proto)
except (pickle.PickleError):
pass
try:
self.dumps(D(), proto)
except (pickle.PickleError):
pass
def get(self, key, default=None, version=None, acquire_lock=True):
key = self.make_key(key, version=version)
self.validate_key(key)
pickled = None
with (self._lock.reader() if acquire_lock else dummy()):
if not self._has_expired(key):
pickled = self._cache[key]
if pickled is not None:
try:
return pickle.loads(pickled)
except pickle.PickleError:
return default
with (self._lock.writer() if acquire_lock else dummy()):
try:
del self._cache[key]
del self._expire_info[key]
except KeyError:
pass
return default
def load_object(self, value):
"""The reversal of :meth:`dump_object`. This might be called with
None.
"""
if value is None:
return None
if value.startswith(b'!'):
try:
return pickle.loads(value[1:])
except pickle.PickleError:
return None
try:
return int(value)
except ValueError:
# before 0.8 we did not have serialization. Still support that.
return value
def load_object(self, value):
"""The reversal of :meth:`dump_object`. This might be called with
None.
"""
if value is None:
return None
if value.startswith(b'!'):
try:
return pickle.loads(value[1:])
except pickle.PickleError:
return None
try:
return int(value)
except ValueError:
# before 0.8 we did not have serialization. Still support that.
return value
def load_object(self, value):
"""The reversal of :meth:`dump_object`. This might be called with
None.
"""
if value is None:
return None
if value.startswith(b'!'):
try:
return pickle.loads(value[1:])
except pickle.PickleError:
return None
try:
return int(value)
except ValueError:
# before 0.8 we did not have serialization. Still support that.
return value
def load_object(self, value):
"""The reversal of :meth:`dump_object`. This might be called with
None.
"""
if value is None:
return None
if value.startswith(b'!'):
try:
return pickle.loads(value[1:])
except pickle.PickleError:
return None
try:
return int(value)
except ValueError:
# before 0.8 we did not have serialization. Still support that.
return value
def load_object(self, value):
"""The reversal of :meth:`dump_object`. This might be called with
None.
"""
if value is None:
return None
if value.startswith(b'!'):
try:
return pickle.loads(value[1:])
except pickle.PickleError:
return None
try:
return int(value)
except ValueError:
# before 0.8 we did not have serialization. Still support that.
return value
