plistlib
— 生成和剖析 Mac OS X
.plist
文件
¶
源代码： Lib/plistlib.py
This module provides an interface for reading and writing the “property list” files used mainly by Mac OS X and supports both binary and XML plist files.
The property list (
.plist
) file format is a simple serialization supporting basic object types, like dictionaries, lists, numbers and strings. Usually the top level object is a dictionary.
To write out and to parse a plist file, use the
dump()
and
load()
函数。
To work with plist data in bytes objects, use
dumps()
and
loads()
.
Values can be strings, integers, floats, booleans, tuples, lists, dictionaries (but only with string keys),
数据
,
bytes
,
bytesarray
or
datetime.datetime
对象。
3.4 版改变： New API, old API deprecated. Support for binary format plists added.
另请参阅
此模块定义了下列函数：
plistlib.
load
(
fp
,
*
,
fmt=None
,
use_builtin_types=True
,
dict_type=dict
)
¶
Read a plist file. fp should be a readable and binary file object. Return the unpacked root object (which usually is a dictionary).
fmt is the format of the file and the following values are valid:
None
: Autodetect the file format
FMT_XML
: XML file format
FMT_BINARY
: Binary plist format
若
use_builtin_types
is true (the default) binary data will be returned as instances of
bytes
, otherwise it is returned as instances of
数据
.
dict_type
is the type used for dictionaries that are read from the plist file. The exact structure of the plist can be recovered by using
collections.OrderedDict
(although the order of keys shouldn’t be important in plist files).
XML data for the
FMT_XML
format is parsed using the Expat parser from
xml.parsers.expat
– see its documentation for possible exceptions on ill-formed XML. Unknown elements will simply be ignored by the plist parser.
The parser for the binary format raises
InvalidFileException
when the file cannot be parsed.
3.4 版新增。
plistlib.
loads
(
data
,
*
,
fmt=None
,
use_builtin_types=True
,
dict_type=dict
)
¶
Load a plist from a bytes object. See
load()
for an explanation of the keyword arguments.
3.4 版新增。
plistlib.
dump
(
value
,
fp
,
*
,
fmt=FMT_XML
,
sort_keys=True
,
skipkeys=False
)
¶
Write value to a plist file. Fp should be a writable, binary file object.
fmt argument specifies the format of the plist file and can be one of the following values:
FMT_XML
: XML formatted plist file
FMT_BINARY
: Binary formatted plist file
当 sort_keys is true (the default) the keys for dictionaries will be written to the plist in sorted order, otherwise they will be written in the iteration order of the dictionary.
当
skipkeys
is false (the default) the function raises
TypeError
when a key of a dictionary is not a string, otherwise such keys are skipped.
A
TypeError
will be raised if the object is of an unsupported type or a container that contains objects of unsupported types.
An
OverflowError
will be raised for integer values that cannot be represented in (binary) plist files.
3.4 版新增。
plistlib.
dumps
(
value
,
*
,
fmt=FMT_XML
,
sort_keys=True
,
skipkeys=False
)
¶
返回
value
as a plist-formatted bytes object. See the documentation for
dump()
for an explanation of the keyword arguments of this function.
3.4 版新增。
The following functions are deprecated:
plistlib.
readPlist
(
pathOrFile
)
¶
Read a plist file. pathOrFile may be either a file name or a (readable and binary) file object. Returns the unpacked root object (which usually is a dictionary).
此函数调用
load()
to do the actual work, see the documentation of
that
function
for an explanation of the keyword arguments.
注意
Dict values in the result have a
__getattr__
method that defers to
__getitem_
. This means that you can use attribute access to access items of these dictionaries.
从 3.4 版起弃用：
使用
load()
代替。
plistlib.
writePlist
(
rootObject
,
pathOrFile
)
¶
Write rootObject to an XML plist file. pathOrFile may be either a file name or a (writable and binary) file object
从 3.4 版起弃用：
使用
dump()
代替。
plistlib.
readPlistFromBytes
(
data
)
¶
Read a plist data from a bytes object. Return the root object.
见
load()
for a description of the keyword arguments.
注意
Dict values in the result have a
__getattr__
method that defers to
__getitem_
. This means that you can use attribute access to access items of these dictionaries.
从 3.4 版起弃用：
使用
loads()
代替。
plistlib.
writePlistToBytes
(
rootObject
)
¶
返回 rootObject as an XML plist-formatted bytes object.
从 3.4 版起弃用：
使用
dumps()
代替。
The following classes are available:
Dict([dict]):
Return an extended mapping object with the same value as dictionary dict .
This class is a subclass of
dict
where attribute access can be used to access items. That is,
aDict.key
如同
aDict['key']
for getting, setting and deleting items in the mapping.
从 3.0 版起弃用。
plistlib.
数据
(
data
)
¶
Return a “data” wrapper object around the bytes object
data
. This is used in functions converting from/to plists to represent the
<data>
type available in plists.
It has one attribute,
data
, that can be used to retrieve the Python bytes object stored in it.
从 3.4 版起弃用：
Use a
bytes
object instead.
The following constants are available:
plistlib.
FMT_XML
¶
The XML format for plist files.
3.4 版新增。
plistlib.
FMT_BINARY
¶
The binary format for plist files
3.4 版新增。
Generating a plist:
pl = dict(
aString = "Doodah",
aList = ["A", "B", 12, 32.1, [1, 2, 3]],
aFloat = 0.1,
anInt = 728,
aDict = dict(
anotherString = "<hello & hi there!>",
aThirdString = "M\xe4ssig, Ma\xdf",
aTrueValue = True,
aFalseValue = False,
),
someData = b"<binary gunk>",
someMoreData = b"<lots of binary gunk>" * 10,
aDate = datetime.datetime.fromtimestamp(time.mktime(time.gmtime())),
)
with open(fileName, 'wb') as fp:
dump(pl, fp)
Parsing a plist:
with open(fileName, 'rb') as fp:
pl = load(fp)
print(pl["aKey"])