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2to3.rst.txt
14.3
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__builtin__.rst.txt
1.46
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__future__.rst.txt
4.84
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__main__.rst.txt
535
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_winreg.rst.txt
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abc.rst.txt
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aepack.rst.txt
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aetools.rst.txt
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aetypes.rst.txt
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aifc.rst.txt
6.92
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al.rst.txt
5.18
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allos.rst.txt
695
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anydbm.rst.txt
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archiving.rst.txt
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argparse.rst.txt
72.93
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array.rst.txt
10.28
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ast.rst.txt
10.23
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asynchat.rst.txt
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asyncore.rst.txt
12.63
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atexit.rst.txt
3.82
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audioop.rst.txt
10.15
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autogil.rst.txt
1015
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base64.rst.txt
6.11
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basehttpserver.rst.txt
10.16
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bastion.rst.txt
2.55
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bdb.rst.txt
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binascii.rst.txt
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binhex.rst.txt
1.87
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bisect.rst.txt
5.29
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bsddb.rst.txt
7.4
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bz2.rst.txt
7.88
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calendar.rst.txt
11.02
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carbon.rst.txt
15.58
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cd.rst.txt
11.69
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cgi.rst.txt
22.32
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cgihttpserver.rst.txt
2.72
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cgitb.rst.txt
2.81
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chunk.rst.txt
4.84
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cmath.rst.txt
7.47
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cmd.rst.txt
8.36
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code.rst.txt
6.95
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codecs.rst.txt
65.4
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codeop.rst.txt
3.69
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collections.rst.txt
40.48
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colorpicker.rst.txt
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colorsys.rst.txt
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commands.rst.txt
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compileall.rst.txt
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compiler.rst.txt
36.59
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configparser.rst.txt
19.15
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constants.rst.txt
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contextlib.rst.txt
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cookie.rst.txt
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cookielib.rst.txt
27.22
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copy.rst.txt
3.27
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copy_reg.rst.txt
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crypt.rst.txt
2.24
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crypto.rst.txt
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csv.rst.txt
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ctypes.rst.txt
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curses.ascii.rst.txt
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curses.panel.rst.txt
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curses.rst.txt
73.12
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custominterp.rst.txt
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datatypes.rst.txt
864
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datetime.rst.txt
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dbhash.rst.txt
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dbm.rst.txt
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debug.rst.txt
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decimal.rst.txt
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development.rst.txt
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difflib.rst.txt
30
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dircache.rst.txt
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dis.rst.txt
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distribution.rst.txt
426
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distutils.rst.txt
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dl.rst.txt
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doctest.rst.txt
72.25
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docxmlrpcserver.rst.txt
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dumbdbm.rst.txt
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dummy_thread.rst.txt
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dummy_threading.rst.txt
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easydialogs.rst.txt
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email-examples.rst.txt
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email.charset.rst.txt
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email.encoders.rst.txt
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email.errors.rst.txt
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email.generator.rst.txt
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email.header.rst.txt
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email.iterators.rst.txt
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email.message.rst.txt
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email.mime.rst.txt
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email.parser.rst.txt
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email.rst.txt
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email.utils.rst.txt
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ensurepip.rst.txt
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errno.rst.txt
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exceptions.rst.txt
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fcntl.rst.txt
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filecmp.rst.txt
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fileformats.rst.txt
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fileinput.rst.txt
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filesys.rst.txt
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fl.rst.txt
17.23
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fm.rst.txt
2.64
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fnmatch.rst.txt
3.03
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formatter.rst.txt
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fpectl.rst.txt
4.07
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fpformat.rst.txt
1.71
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fractions.rst.txt
5.17
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framework.rst.txt
11.18
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frameworks.rst.txt
378
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ftplib.rst.txt
15.35
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functions.rst.txt
73.75
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functools.rst.txt
7.27
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future_builtins.rst.txt
1.96
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gc.rst.txt
8.8
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gdbm.rst.txt
4.77
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gensuitemodule.rst.txt
3.04
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getopt.rst.txt
6.51
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getpass.rst.txt
1.83
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gettext.rst.txt
28.36
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gl.rst.txt
5.87
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glob.rst.txt
2.36
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grp.rst.txt
2.2
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gzip.rst.txt
4.71
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hashlib.rst.txt
7.21
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heapq.rst.txt
12.88
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hmac.rst.txt
3
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hotshot.rst.txt
4.19
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htmllib.rst.txt
7.21
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htmlparser.rst.txt
11.37
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httplib.rst.txt
36.58
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i18n.rst.txt
409
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ic.rst.txt
4.89
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idle.rst.txt
21.66
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imageop.rst.txt
3.91
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imaplib.rst.txt
16.82
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imgfile.rst.txt
2.7
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imghdr.rst.txt
2.57
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imp.rst.txt
12.3
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importlib.rst.txt
1.1
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imputil.rst.txt
6.86
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index.rst.txt
2.23
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inspect.rst.txt
27.49
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internet.rst.txt
950
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intro.rst.txt
2.74
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io.rst.txt
38.11
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ipc.rst.txt
630
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itertools.rst.txt
35.67
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jpeg.rst.txt
3.77
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json.rst.txt
24.95
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keyword.rst.txt
617
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language.rst.txt
523
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linecache.rst.txt
1.84
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locale.rst.txt
24.39
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logging.config.rst.txt
30.82
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logging.handlers.rst.txt
27.49
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logging.rst.txt
45.78
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mac.rst.txt
791
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macos.rst.txt
3.73
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macosa.rst.txt
3.87
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macostools.rst.txt
3.92
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macpath.rst.txt
650
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mailbox.rst.txt
66.53
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mailcap.rst.txt
3.59
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markup.rst.txt
1.22
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marshal.rst.txt
5.56
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math.rst.txt
10.66
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md5.rst.txt
2.75
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mhlib.rst.txt
3.87
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mimetools.rst.txt
4.4
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mimetypes.rst.txt
9.61
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mimewriter.rst.txt
3.28
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mimify.rst.txt
3.44
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miniaeframe.rst.txt
2.5
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misc.rst.txt
248
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mm.rst.txt
447
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mmap.rst.txt
10.24
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modulefinder.rst.txt
3.3
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modules.rst.txt
382
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msilib.rst.txt
18.62
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msvcrt.rst.txt
4.24
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multifile.rst.txt
6.46
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multiprocessing.rst.txt
90.45
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mutex.rst.txt
1.89
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netdata.rst.txt
432
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netrc.rst.txt
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new.rst.txt
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nis.rst.txt
2.06
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nntplib.rst.txt
14.19
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numbers.rst.txt
7.82
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numeric.rst.txt
751
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operator.rst.txt
21.57
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optparse.rst.txt
75.29
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os.path.rst.txt
12.79
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os.rst.txt
80.64
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ossaudiodev.rst.txt
16.9
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othergui.rst.txt
2.66
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parser.rst.txt
15.02
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pdb.rst.txt
15.67
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persistence.rst.txt
826
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pickle.rst.txt
36.39
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pickletools.rst.txt
1.95
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pipes.rst.txt
3.7
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pkgutil.rst.txt
7.53
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platform.rst.txt
9.33
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plistlib.rst.txt
4.04
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popen2.rst.txt
6.86
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poplib.rst.txt
6.07
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posix.rst.txt
3.54
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posixfile.rst.txt
7.03
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pprint.rst.txt
8.86
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profile.rst.txt
27.99
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pty.rst.txt
1.72
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pwd.rst.txt
2.66
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py_compile.rst.txt
2.42
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pyclbr.rst.txt
3.22
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pydoc.rst.txt
3.99
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pyexpat.rst.txt
28.21
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python.rst.txt
514
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queue.rst.txt
6.87
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quopri.rst.txt
2.61
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random.rst.txt
13.01
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re.rst.txt
53.81
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readline.rst.txt
10.27
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repr.rst.txt
4.61
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resource.rst.txt
9.37
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restricted.rst.txt
3.25
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rexec.rst.txt
11.47
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rfc822.rst.txt
13.71
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rlcompleter.rst.txt
2.44
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robotparser.rst.txt
2.14
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runpy.rst.txt
6.78
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sched.rst.txt
4.54
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scrolledtext.rst.txt
1.35
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select.rst.txt
20.26
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sets.rst.txt
14.62
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sgi.rst.txt
322
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sgmllib.rst.txt
10.41
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sha.rst.txt
2.74
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shelve.rst.txt
8.12
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shlex.rst.txt
11.05
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shutil.rst.txt
13.17
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signal.rst.txt
10.47
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simplehttpserver.rst.txt
4.45
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simplexmlrpcserver.rst.txt
10.63
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site.rst.txt
7.7
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smtpd.rst.txt
2.41
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smtplib.rst.txt
14.56
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sndhdr.rst.txt
1.72
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socket.rst.txt
39.81
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socketserver.rst.txt
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someos.rst.txt
599
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spwd.rst.txt
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sqlite3.rst.txt
34.62
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ssl.rst.txt
74.91
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stat.rst.txt
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statvfs.rst.txt
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stdtypes.rst.txt
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string.rst.txt
43.05
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stringio.rst.txt
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stringprep.rst.txt
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strings.rst.txt
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struct.rst.txt
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subprocess.rst.txt
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sun.rst.txt
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sunau.rst.txt
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sunaudio.rst.txt
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symbol.rst.txt
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symtable.rst.txt
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sys.rst.txt
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sysconfig.rst.txt
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syslog.rst.txt
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tabnanny.rst.txt
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tarfile.rst.txt
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telnetlib.rst.txt
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tempfile.rst.txt
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termios.rst.txt
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test.rst.txt
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textwrap.rst.txt
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thread.rst.txt
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threading.rst.txt
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time.rst.txt
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timeit.rst.txt
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tix.rst.txt
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tk.rst.txt
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tkinter.rst.txt
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token.rst.txt
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tokenize.rst.txt
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trace.rst.txt
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traceback.rst.txt
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ttk.rst.txt
56.07
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tty.rst.txt
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turtle.rst.txt
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types.rst.txt
6.05
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undoc.rst.txt
6.4
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unicodedata.rst.txt
5.59
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unittest.rst.txt
81.01
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unix.rst.txt
490
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urllib.rst.txt
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urllib2.rst.txt
34.39
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urlparse.rst.txt
16.56
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user.rst.txt
2.68
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userdict.rst.txt
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uu.rst.txt
2.31
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uuid.rst.txt
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warnings.rst.txt
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wave.rst.txt
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weakref.rst.txt
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webbrowser.rst.txt
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whichdb.rst.txt
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windows.rst.txt
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winsound.rst.txt
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wsgiref.rst.txt
29.85
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xdrlib.rst.txt
7.89
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xml.dom.minidom.rst.txt
10.95
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xml.dom.pulldom.rst.txt
1.53
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xml.dom.rst.txt
39.24
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xml.etree.elementtree.rst.txt
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Code Editor : _winreg.rst.txt
:mod:`_winreg` --- Windows registry access ========================================== .. module:: _winreg :platform: Windows :synopsis: Routines and objects for manipulating the Windows registry. .. sectionauthor:: Mark Hammond <MarkH@ActiveState.com> .. note:: The :mod:`_winreg` module has been renamed to :mod:`winreg` in Python 3. The :term:`2to3` tool will automatically adapt imports when converting your sources to Python 3. .. versionadded:: 2.0 These functions expose the Windows registry API to Python. Instead of using an integer as the registry handle, a :ref:`handle object <handle-object>` is used to ensure that the handles are closed correctly, even if the programmer neglects to explicitly close them. This module offers the following functions: .. function:: CloseKey(hkey) Closes a previously opened registry key. The *hkey* argument specifies a previously opened key. .. note:: If *hkey* is not closed using this method (or via :meth:`hkey.Close() <PyHKEY.Close>`), it is closed when the *hkey* object is destroyed by Python. .. function:: ConnectRegistry(computer_name, key) Establishes a connection to a predefined registry handle on another computer, and returns a :ref:`handle object <handle-object>`. *computer_name* is the name of the remote computer, of the form ``r"\\computername"``. If ``None``, the local computer is used. *key* is the predefined handle to connect to. The return value is the handle of the opened key. If the function fails, a :exc:`WindowsError` exception is raised. .. function:: CreateKey(key, sub_key) Creates or opens the specified key, returning a :ref:`handle object <handle-object>`. *key* is an already open key, or one of the predefined :ref:`HKEY_* constants <hkey-constants>`. *sub_key* is a string that names the key this method opens or creates. If *key* is one of the predefined keys, *sub_key* may be ``None``. In that case, the handle returned is the same key handle passed in to the function. If the key already exists, this function opens the existing key. The return value is the handle of the opened key. If the function fails, a :exc:`WindowsError` exception is raised. .. function:: CreateKeyEx(key, sub_key[, res[, sam]]) Creates or opens the specified key, returning a :ref:`handle object <handle-object>`. *key* is an already open key, or one of the predefined :ref:`HKEY_* constants <hkey-constants>`. *sub_key* is a string that names the key this method opens or creates. *res* is a reserved integer, and must be zero. The default is zero. *sam* is an integer that specifies an access mask that describes the desired security access for the key. Default is :const:`KEY_ALL_ACCESS`. See :ref:`Access Rights <access-rights>` for other allowed values. If *key* is one of the predefined keys, *sub_key* may be ``None``. In that case, the handle returned is the same key handle passed in to the function. If the key already exists, this function opens the existing key. The return value is the handle of the opened key. If the function fails, a :exc:`WindowsError` exception is raised. .. versionadded:: 2.7 .. function:: DeleteKey(key, sub_key) Deletes the specified key. *key* is an already open key, or any one of the predefined :ref:`HKEY_* constants <hkey-constants>`. *sub_key* is a string that must be a subkey of the key identified by the *key* parameter. This value must not be ``None``, and the key may not have subkeys. *This method can not delete keys with subkeys.* If the method succeeds, the entire key, including all of its values, is removed. If the method fails, a :exc:`WindowsError` exception is raised. .. function:: DeleteKeyEx(key, sub_key[, sam[, res]]) Deletes the specified key. .. note:: The :func:`DeleteKeyEx` function is implemented with the RegDeleteKeyEx Windows API function, which is specific to 64-bit versions of Windows. See the `RegDeleteKeyEx documentation <http://msdn.microsoft.com/en-us/library/ms724847%28VS.85%29.aspx>`__. *key* is an already open key, or any one of the predefined :ref:`HKEY_* constants <hkey-constants>`. *sub_key* is a string that must be a subkey of the key identified by the *key* parameter. This value must not be ``None``, and the key may not have subkeys. *res* is a reserved integer, and must be zero. The default is zero. *sam* is an integer that specifies an access mask that describes the desired security access for the key. Default is :const:`KEY_WOW64_64KEY`. See :ref:`Access Rights <access-rights>` for other allowed values. *This method can not delete keys with subkeys.* If the method succeeds, the entire key, including all of its values, is removed. If the method fails, a :exc:`WindowsError` exception is raised. On unsupported Windows versions, :exc:`NotImplementedError` is raised. .. versionadded:: 2.7 .. function:: DeleteValue(key, value) Removes a named value from a registry key. *key* is an already open key, or one of the predefined :ref:`HKEY_* constants <hkey-constants>`. *value* is a string that identifies the value to remove. .. function:: EnumKey(key, index) Enumerates subkeys of an open registry key, returning a string. *key* is an already open key, or any one of the predefined :ref:`HKEY_* constants <hkey-constants>`. *index* is an integer that identifies the index of the key to retrieve. The function retrieves the name of one subkey each time it is called. It is typically called repeatedly until a :exc:`WindowsError` exception is raised, indicating, no more values are available. .. function:: EnumValue(key, index) Enumerates values of an open registry key, returning a tuple. *key* is an already open key, or any one of the predefined :ref:`HKEY_* constants <hkey-constants>`. *index* is an integer that identifies the index of the value to retrieve. The function retrieves the name of one subkey each time it is called. It is typically called repeatedly, until a :exc:`WindowsError` exception is raised, indicating no more values. The result is a tuple of 3 items: +-------+--------------------------------------------+ | Index | Meaning | +=======+============================================+ | ``0`` | A string that identifies the value name | +-------+--------------------------------------------+ | ``1`` | An object that holds the value data, and | | | whose type depends on the underlying | | | registry type | +-------+--------------------------------------------+ | ``2`` | An integer that identifies the type of the | | | value data (see table in docs for | | | :meth:`SetValueEx`) | +-------+--------------------------------------------+ .. function:: ExpandEnvironmentStrings(unicode) Expands environment variable placeholders ``%NAME%`` in unicode strings like :const:`REG_EXPAND_SZ`:: >>> ExpandEnvironmentStrings(u"%windir%") u"C:\\Windows" .. versionadded:: 2.6 .. function:: FlushKey(key) Writes all the attributes of a key to the registry. *key* is an already open key, or one of the predefined :ref:`HKEY_* constants <hkey-constants>`. It is not necessary to call :func:`FlushKey` to change a key. Registry changes are flushed to disk by the registry using its lazy flusher. Registry changes are also flushed to disk at system shutdown. Unlike :func:`CloseKey`, the :func:`FlushKey` method returns only when all the data has been written to the registry. An application should only call :func:`FlushKey` if it requires absolute certainty that registry changes are on disk. .. note:: If you don't know whether a :func:`FlushKey` call is required, it probably isn't. .. function:: LoadKey(key, sub_key, file_name) Creates a subkey under the specified key and stores registration information from a specified file into that subkey. *key* is a handle returned by :func:`ConnectRegistry` or one of the constants :const:`HKEY_USERS` or :const:`HKEY_LOCAL_MACHINE`. *sub_key* is a string that identifies the subkey to load. *file_name* is the name of the file to load registry data from. This file must have been created with the :func:`SaveKey` function. Under the file allocation table (FAT) file system, the filename may not have an extension. A call to :func:`LoadKey` fails if the calling process does not have the :const:`SE_RESTORE_PRIVILEGE` privilege. Note that privileges are different from permissions -- see the `RegLoadKey documentation <http://msdn.microsoft.com/en-us/library/ms724889%28v=VS.85%29.aspx>`__ for more details. If *key* is a handle returned by :func:`ConnectRegistry`, then the path specified in *file_name* is relative to the remote computer. .. function:: OpenKey(key, sub_key[, res[, sam]]) Opens the specified key, returning a :ref:`handle object <handle-object>`. *key* is an already open key, or any one of the predefined :ref:`HKEY_* constants <hkey-constants>`. *sub_key* is a string that identifies the sub_key to open. *res* is a reserved integer, and must be zero. The default is zero. *sam* is an integer that specifies an access mask that describes the desired security access for the key. Default is :const:`KEY_READ`. See :ref:`Access Rights <access-rights>` for other allowed values. The result is a new handle to the specified key. If the function fails, :exc:`WindowsError` is raised. .. function:: OpenKeyEx() The functionality of :func:`OpenKeyEx` is provided via :func:`OpenKey`, by the use of default arguments. .. function:: QueryInfoKey(key) Returns information about a key, as a tuple. *key* is an already open key, or one of the predefined :ref:`HKEY_* constants <hkey-constants>`. The result is a tuple of 3 items: +-------+---------------------------------------------+ | Index | Meaning | +=======+=============================================+ | ``0`` | An integer giving the number of sub keys | | | this key has. | +-------+---------------------------------------------+ | ``1`` | An integer giving the number of values this | | | key has. | +-------+---------------------------------------------+ | ``2`` | A long integer giving when the key was last | | | modified (if available) as 100's of | | | nanoseconds since Jan 1, 1601. | +-------+---------------------------------------------+ .. function:: QueryValue(key, sub_key) Retrieves the unnamed value for a key, as a string. *key* is an already open key, or one of the predefined :ref:`HKEY_* constants <hkey-constants>`. *sub_key* is a string that holds the name of the subkey with which the value is associated. If this parameter is ``None`` or empty, the function retrieves the value set by the :func:`SetValue` method for the key identified by *key*. Values in the registry have name, type, and data components. This method retrieves the data for a key's first value that has a NULL name. But the underlying API call doesn't return the type, so always use :func:`QueryValueEx` if possible. .. function:: QueryValueEx(key, value_name) Retrieves the type and data for a specified value name associated with an open registry key. *key* is an already open key, or one of the predefined :ref:`HKEY_* constants <hkey-constants>`. *value_name* is a string indicating the value to query. The result is a tuple of 2 items: +-------+-----------------------------------------+ | Index | Meaning | +=======+=========================================+ | ``0`` | The value of the registry item. | +-------+-----------------------------------------+ | ``1`` | An integer giving the registry type for | | | this value (see table in docs for | | | :meth:`SetValueEx`) | +-------+-----------------------------------------+ .. function:: SaveKey(key, file_name) Saves the specified key, and all its subkeys to the specified file. *key* is an already open key, or one of the predefined :ref:`HKEY_* constants <hkey-constants>`. *file_name* is the name of the file to save registry data to. This file cannot already exist. If this filename includes an extension, it cannot be used on file allocation table (FAT) file systems by the :meth:`LoadKey` method. If *key* represents a key on a remote computer, the path described by *file_name* is relative to the remote computer. The caller of this method must possess the :const:`SeBackupPrivilege` security privilege. Note that privileges are different than permissions -- see the `Conflicts Between User Rights and Permissions documentation <http://msdn.microsoft.com/en-us/library/ms724878%28v=VS.85%29.aspx>`__ for more details. This function passes NULL for *security_attributes* to the API. .. function:: SetValue(key, sub_key, type, value) Associates a value with a specified key. *key* is an already open key, or one of the predefined :ref:`HKEY_* constants <hkey-constants>`. *sub_key* is a string that names the subkey with which the value is associated. *type* is an integer that specifies the type of the data. Currently this must be :const:`REG_SZ`, meaning only strings are supported. Use the :func:`SetValueEx` function for support for other data types. *value* is a string that specifies the new value. If the key specified by the *sub_key* parameter does not exist, the SetValue function creates it. Value lengths are limited by available memory. Long values (more than 2048 bytes) should be stored as files with the filenames stored in the configuration registry. This helps the registry perform efficiently. The key identified by the *key* parameter must have been opened with :const:`KEY_SET_VALUE` access. .. function:: SetValueEx(key, value_name, reserved, type, value) Stores data in the value field of an open registry key. *key* is an already open key, or one of the predefined :ref:`HKEY_* constants <hkey-constants>`. *value_name* is a string that names the subkey with which the value is associated. *type* is an integer that specifies the type of the data. See :ref:`Value Types <value-types>` for the available types. *reserved* can be anything -- zero is always passed to the API. *value* is a string that specifies the new value. This method can also set additional value and type information for the specified key. The key identified by the key parameter must have been opened with :const:`KEY_SET_VALUE` access. To open the key, use the :func:`CreateKey` or :func:`OpenKey` methods. Value lengths are limited by available memory. Long values (more than 2048 bytes) should be stored as files with the filenames stored in the configuration registry. This helps the registry perform efficiently. .. function:: DisableReflectionKey(key) Disables registry reflection for 32-bit processes running on a 64-bit operating system. *key* is an already open key, or one of the predefined :ref:`HKEY_* constants <hkey-constants>`. Will generally raise :exc:`NotImplementedError` if executed on a 32-bit operating system. If the key is not on the reflection list, the function succeeds but has no effect. Disabling reflection for a key does not affect reflection of any subkeys. .. function:: EnableReflectionKey(key) Restores registry reflection for the specified disabled key. *key* is an already open key, or one of the predefined :ref:`HKEY_* constants <hkey-constants>`. Will generally raise :exc:`NotImplementedError` if executed on a 32-bit operating system. Restoring reflection for a key does not affect reflection of any subkeys. .. function:: QueryReflectionKey(key) Determines the reflection state for the specified key. *key* is an already open key, or one of the predefined :ref:`HKEY_* constants <hkey-constants>`. Returns ``True`` if reflection is disabled. Will generally raise :exc:`NotImplementedError` if executed on a 32-bit operating system. .. _constants: Constants ------------------ The following constants are defined for use in many :mod:`_winreg` functions. .. _hkey-constants: HKEY_* Constants ++++++++++++++++ .. data:: HKEY_CLASSES_ROOT Registry entries subordinate to this key define types (or classes) of documents and the properties associated with those types. Shell and COM applications use the information stored under this key. .. data:: HKEY_CURRENT_USER Registry entries subordinate to this key define the preferences of the current user. These preferences include the settings of environment variables, data about program groups, colors, printers, network connections, and application preferences. .. data:: HKEY_LOCAL_MACHINE Registry entries subordinate to this key define the physical state of the computer, including data about the bus type, system memory, and installed hardware and software. .. data:: HKEY_USERS Registry entries subordinate to this key define the default user configuration for new users on the local computer and the user configuration for the current user. .. data:: HKEY_PERFORMANCE_DATA Registry entries subordinate to this key allow you to access performance data. The data is not actually stored in the registry; the registry functions cause the system to collect the data from its source. .. data:: HKEY_CURRENT_CONFIG Contains information about the current hardware profile of the local computer system. .. data:: HKEY_DYN_DATA This key is not used in versions of Windows after 98. .. _access-rights: Access Rights +++++++++++++ For more information, see `Registry Key Security and Access <http://msdn.microsoft.com/en-us/library/ms724878%28v=VS.85%29.aspx>`__. .. data:: KEY_ALL_ACCESS Combines the STANDARD_RIGHTS_REQUIRED, :const:`KEY_QUERY_VALUE`, :const:`KEY_SET_VALUE`, :const:`KEY_CREATE_SUB_KEY`, :const:`KEY_ENUMERATE_SUB_KEYS`, :const:`KEY_NOTIFY`, and :const:`KEY_CREATE_LINK` access rights. .. data:: KEY_WRITE Combines the STANDARD_RIGHTS_WRITE, :const:`KEY_SET_VALUE`, and :const:`KEY_CREATE_SUB_KEY` access rights. .. data:: KEY_READ Combines the STANDARD_RIGHTS_READ, :const:`KEY_QUERY_VALUE`, :const:`KEY_ENUMERATE_SUB_KEYS`, and :const:`KEY_NOTIFY` values. .. data:: KEY_EXECUTE Equivalent to :const:`KEY_READ`. .. data:: KEY_QUERY_VALUE Required to query the values of a registry key. .. data:: KEY_SET_VALUE Required to create, delete, or set a registry value. .. data:: KEY_CREATE_SUB_KEY Required to create a subkey of a registry key. .. data:: KEY_ENUMERATE_SUB_KEYS Required to enumerate the subkeys of a registry key. .. data:: KEY_NOTIFY Required to request change notifications for a registry key or for subkeys of a registry key. .. data:: KEY_CREATE_LINK Reserved for system use. .. _64-bit-access-rights: 64-bit Specific *************** For more information, see `Accessing an Alternate Registry View <http://msdn.microsoft.com/en-us/library/aa384129(v=VS.85).aspx>`__. .. data:: KEY_WOW64_64KEY Indicates that an application on 64-bit Windows should operate on the 64-bit registry view. .. data:: KEY_WOW64_32KEY Indicates that an application on 64-bit Windows should operate on the 32-bit registry view. .. _value-types: Value Types +++++++++++ For more information, see `Registry Value Types <http://msdn.microsoft.com/en-us/library/ms724884%28v=VS.85%29.aspx>`__. .. data:: REG_BINARY Binary data in any form. .. data:: REG_DWORD 32-bit number. .. data:: REG_DWORD_LITTLE_ENDIAN A 32-bit number in little-endian format. .. data:: REG_DWORD_BIG_ENDIAN A 32-bit number in big-endian format. .. data:: REG_EXPAND_SZ Null-terminated string containing references to environment variables (``%PATH%``). .. data:: REG_LINK A Unicode symbolic link. .. data:: REG_MULTI_SZ A sequence of null-terminated strings, terminated by two null characters. (Python handles this termination automatically.) .. data:: REG_NONE No defined value type. .. data:: REG_RESOURCE_LIST A device-driver resource list. .. data:: REG_FULL_RESOURCE_DESCRIPTOR A hardware setting. .. data:: REG_RESOURCE_REQUIREMENTS_LIST A hardware resource list. .. data:: REG_SZ A null-terminated string. .. _handle-object: Registry Handle Objects ----------------------- This object wraps a Windows HKEY object, automatically closing it when the object is destroyed. To guarantee cleanup, you can call either the :meth:`~PyHKEY.Close` method on the object, or the :func:`CloseKey` function. All registry functions in this module return one of these objects. All registry functions in this module which accept a handle object also accept an integer, however, use of the handle object is encouraged. Handle objects provide semantics for :meth:`__nonzero__` -- thus:: if handle: print "Yes" will print ``Yes`` if the handle is currently valid (has not been closed or detached). The object also support comparison semantics, so handle objects will compare true if they both reference the same underlying Windows handle value. Handle objects can be converted to an integer (e.g., using the built-in :func:`int` function), in which case the underlying Windows handle value is returned. You can also use the :meth:`~PyHKEY.Detach` method to return the integer handle, and also disconnect the Windows handle from the handle object. .. method:: PyHKEY.Close() Closes the underlying Windows handle. If the handle is already closed, no error is raised. .. method:: PyHKEY.Detach() Detaches the Windows handle from the handle object. The result is an integer (or long on 64 bit Windows) that holds the value of the handle before it is detached. If the handle is already detached or closed, this will return zero. After calling this function, the handle is effectively invalidated, but the handle is not closed. You would call this function when you need the underlying Win32 handle to exist beyond the lifetime of the handle object. .. method:: PyHKEY.__enter__() PyHKEY.__exit__(\*exc_info) The HKEY object implements :meth:`~object.__enter__` and :meth:`~object.__exit__` and thus supports the context protocol for the :keyword:`with` statement:: with OpenKey(HKEY_LOCAL_MACHINE, "foo") as key: ... # work with key will automatically close *key* when control leaves the :keyword:`with` block. .. versionadded:: 2.6
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