plistlib
--- 產生和剖析 Apple.plist
檔案¶
原始碼:Lib/plistlib.py
This module provides an interface for reading and writing the "property list"files used by Apple, primarily on macOS and iOS. This module supports both binaryand XML plist files.
The property list (.plist
) file format is a simple serialization supportingbasic object types, like dictionaries, lists, numbers and strings. Usually thetop level object is a dictionary.
To write out and to parse a plist file, use thedump()
andload()
functions.
To work with plist data in bytes or string objects, usedumps()
andloads()
.
Values can be strings, integers, floats, booleans, tuples, lists, dictionaries(but only with string keys),bytes
,bytearray
ordatetime.datetime
objects.
在 3.4 版的變更:New API, old API deprecated. Support for binary format plists added.
在 3.8 版的變更:Support added for reading and writingUID
tokens in binary plists as usedby NSKeyedArchiver and NSKeyedUnarchiver.
在 3.9 版的變更:Old API removed.
也參考
- PList manual page
Apple's documentation of the file format.
此模組定義了以下函式:
- plistlib.load(fp,*,fmt=None,dict_type=dict,aware_datetime=False)¶
Read a plist file.fp should be a readable and binary file object.Return the unpacked root object (which usually is adictionary).
Thefmt is the format of the file and the following values are valid:
None
: Autodetect the file formatFMT_XML
: XML file formatFMT_BINARY
: Binary plist format
Thedict_type is the type used for dictionaries that are read from theplist file.
Whenaware_datetime is true, fields with type
datetime.datetime
willbe created asaware object, withtzinfo
asdatetime.UTC
.XML data for the
FMT_XML
format is parsed using the Expat parserfromxml.parsers.expat
-- see its documentation for possibleexceptions on ill-formed XML. Unknown elements will simply be ignoredby the plist parser.The parser raises
InvalidFileException
when the file cannot be parsed.在 3.4 版被加入.
在 3.13 版的變更:The keyword-only parameteraware_datetime has been added.
- plistlib.loads(data,*,fmt=None,dict_type=dict,aware_datetime=False)¶
Load a plist from a bytes or string object. See
load()
for anexplanation of the keyword arguments.在 3.4 版被加入.
在 3.13 版的變更:data can be a string whenfmt equals
FMT_XML
.
- plistlib.dump(value,fp,*,fmt=FMT_XML,sort_keys=True,skipkeys=False,aware_datetime=False)¶
Writevalue to a plist file.fp should be a writable, binaryfile object.
Thefmt argument specifies the format of the plist file and can beone of the following values:
FMT_XML
: XML formatted plist fileFMT_BINARY
: Binary formatted plist file
Whensort_keys is true (the default) the keys for dictionaries will bewritten to the plist in sorted order, otherwise they will be written inthe iteration order of the dictionary.
Whenskipkeys is false (the default) the function raises
TypeError
when a key of a dictionary is not a string, otherwise such keys are skipped.Whenaware_datetime is true and any field with type
datetime.datetime
is set as anaware object, it will convert toUTC timezone before writing it.A
TypeError
will be raised if the object is of an unsupported type ora container that contains objects of unsupported types.An
OverflowError
will be raised for integer values that cannotbe represented in (binary) plist files.在 3.4 版被加入.
在 3.13 版的變更:The keyword-only parameteraware_datetime has been added.
- plistlib.dumps(value,*,fmt=FMT_XML,sort_keys=True,skipkeys=False,aware_datetime=False)¶
Returnvalue as a plist-formatted bytes object. Seethe documentation for
dump()
for an explanation of the keywordarguments of this function.在 3.4 版被加入.
The following classes are available:
- classplistlib.UID(data)¶
Wraps an
int
. This is used when reading or writing NSKeyedArchiverencoded data, which contains UID (see PList manual).- data¶
Int value of the UID. It must be in the range
0<=data<2**64
.
在 3.8 版被加入.
The following constants are available:
- plistlib.FMT_XML¶
The XML format for plist files.
在 3.4 版被加入.
- plistlib.FMT_BINARY¶
The binary format for plist files
在 3.4 版被加入.
The module defines the following exceptions:
- exceptionplistlib.InvalidFileException¶
Raised when a file cannot be parsed.
在 3.4 版被加入.
範例¶
Generating a plist:
importdatetimeimportplistlibpl=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.now())print(plistlib.dumps(pl).decode())
Parsing a plist:
importplistlibplist=b"""<plist version="1.0"><dict> <key>foo</key> <string>bar</string></dict></plist>"""pl=plistlib.loads(plist)print(pl["foo"])