Python standard library: pickle

Dump an object to a file and load it again

import pickle

obj = [
   {'col 1': 'one'  , 'col 2': 1, 'col 3': 'foo'},
   {'col 1': 'two'  , 'col 2': 2, 'col 3': 'bar'},
   {'col 1': 'three', 'col 2': 3, 'col 3': 'baz'},
]

pickle.dump(obj, open('obj.pickled', 'wb'))

import pickle

obj = pickle.load(open('obj.pickled', 'rb'))

print(obj)

Members of the pickle module

`ADDITEMS`	`bytes` object
`APPEND`	`bytes` object
`APPENDS`	`bytes` object
`BINBYTES`	`bytes` object
`BINBYTES8`	`bytes` object
`BINFLOAT`	`bytes` object
`BINGET`	`bytes` object
`BININT`	`bytes` object
`BININT1`	`bytes` object
`BININT2`	`bytes` object
`BINPERSID`	`bytes` object
`BINPUT`	`bytes` object
`BINSTRING`	`bytes` object
`BINUNICODE`	`bytes` object
`BINUNICODE8`	`bytes` object
`BUILD`	`bytes` object
`BYTEARRAY8`	`bytes` object
`bytes_types`	`tuple` object
`codecs`	Module
`compatible_formats`	`list` object
`_compat_pickle`	Module
`decode_long()`	Function
`DEFAULT_PROTOCOL`	`int` object
`DICT`	`bytes` object
`dispatch_table`	`dict` object
`_dump()`	Function
`dump()`
`_dumps()`	Function
`dumps()`	Returns the pickled representation of the object as a `bytes` object.
`DUP`	`bytes` object
`EMPTY_DICT`	`bytes` object
`EMPTY_LIST`	`bytes` object
`EMPTY_SET`	`bytes` object
`EMPTY_TUPLE`	`bytes` object
`encode_long()`	Function
`EXT1`	`bytes` object
`EXT2`	`bytes` object
`EXT4`	`bytes` object
`_extension_cache`	`dict` object
`_extension_registry`	`dict` object
`FALSE`	`bytes` object
`FLOAT`	`bytes` object
`format_version`	`str` object
`FRAME`	`bytes` object
`_Framer`	`pickle._Framer` class
`FROZENSET`	`bytes` object
`FunctionType`	`function` class
`GET`	`bytes` object
`_getattribute()`	Function
`GLOBAL`	`bytes` object
`_HAVE_PICKLE_BUFFER`	`bool` object
`HIGHEST_PROTOCOL`	`int` object
`INST`	`bytes` object
`INT`	`bytes` object
`_inverted_registry`	`dict` object
`io`	Module
`islice`	`itertools.islice` class
`LIST`	`bytes` object
`_load()`	Function
`load()`
`_loads()`	Function
`loads()`
`LONG`	`bytes` object
`LONG1`	`bytes` object
`LONG4`	`bytes` object
`LONG_BINGET`	`bytes` object
`LONG_BINPUT`	`bytes` object
`MARK`	`bytes` object
`maxsize`	`int` object
`MEMOIZE`	`bytes` object
`NEWFALSE`	`bytes` object
`NEWOBJ`	`bytes` object
`NEWOBJ_EX`	`bytes` object
`NEWTRUE`	`bytes` object
`NEXT_BUFFER`	`bytes` object
`NONE`	`bytes` object
`OBJ`	`bytes` object
`pack()`
`partial`	`functools.partial` class
`PERSID`	`bytes` object
`PickleBuffer`	`pickle.PickleBuffer` class
`PickleError`	`_pickle.PickleError` class
`Pickler`	`_pickle.Pickler` class
`_Pickler`	`pickle._Pickler` class
`PicklingError`	`_pickle.PicklingError` class
`POP`	`bytes` object
`POP_MARK`	`bytes` object
`PROTO`	`bytes` object
`PUT`	`bytes` object
`PyStringMap`	`NoneType` object
`re`	Module
`READONLY_BUFFER`	`bytes` object
`REDUCE`	`bytes` object
`SETITEM`	`bytes` object
`SETITEMS`	`bytes` object
`SHORT_BINBYTES`	`bytes` object
`SHORT_BINSTRING`	`bytes` object
`SHORT_BINUNICODE`	`bytes` object
`STACK_GLOBAL`	`bytes` object
`STOP`	`bytes` object
`_Stop`	`pickle._Stop` class
`STRING`	`bytes` object
`sys`	Module
`_test()`	Function
`TRUE`	`bytes` object
`TUPLE`	`bytes` object
`TUPLE1`	`bytes` object
`TUPLE2`	`bytes` object
`TUPLE3`	`bytes` object
`_tuplesize2code`	`list` object
`_Unframer`	`pickle._Unframer` class
`UNICODE`	`bytes` object
`unpack()`
`Unpickler`	`_pickle.Unpickler` class
`_Unpickler`	`pickle._Unpickler` class
`UnpicklingError`	`_pickle.UnpicklingError` class
`whichmodule()`	Function

Python standard library: pickle

Dump an object to a file and load it again

Members of the pickle module

See also