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2to3.rst.txt
14.3
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__builtin__.rst.txt
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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
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anydbm.rst.txt
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archiving.rst.txt
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argparse.rst.txt
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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
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basehttpserver.rst.txt
10.16
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bastion.rst.txt
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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
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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
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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
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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
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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
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fnmatch.rst.txt
3.03
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formatter.rst.txt
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fpectl.rst.txt
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fpformat.rst.txt
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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
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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
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language.rst.txt
523
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linecache.rst.txt
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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
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sched.rst.txt
4.54
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scrolledtext.rst.txt
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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
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socket.rst.txt
39.81
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socketserver.rst.txt
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someos.rst.txt
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spwd.rst.txt
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sqlite3.rst.txt
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ssl.rst.txt
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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
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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
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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
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user.rst.txt
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userdict.rst.txt
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uu.rst.txt
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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
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xml.etree.elementtree.rst.txt
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Code Editor : sunau.rst.txt
:mod:`sunau` --- Read and write Sun AU files ============================================ .. module:: sunau :synopsis: Provide an interface to the Sun AU sound format. .. sectionauthor:: Moshe Zadka <moshez@zadka.site.co.il> **Source code:** :source:`Lib/sunau.py` -------------- The :mod:`sunau` module provides a convenient interface to the Sun AU sound format. Note that this module is interface-compatible with the modules :mod:`aifc` and :mod:`wave`. An audio file consists of a header followed by the data. The fields of the header are: +---------------+-----------------------------------------------+ | Field | Contents | +===============+===============================================+ | magic word | The four bytes ``.snd``. | +---------------+-----------------------------------------------+ | header size | Size of the header, including info, in bytes. | +---------------+-----------------------------------------------+ | data size | Physical size of the data, in bytes. | +---------------+-----------------------------------------------+ | encoding | Indicates how the audio samples are encoded. | +---------------+-----------------------------------------------+ | sample rate | The sampling rate. | +---------------+-----------------------------------------------+ | # of channels | The number of channels in the samples. | +---------------+-----------------------------------------------+ | info | ASCII string giving a description of the | | | audio file (padded with null bytes). | +---------------+-----------------------------------------------+ Apart from the info field, all header fields are 4 bytes in size. They are all 32-bit unsigned integers encoded in big-endian byte order. The :mod:`sunau` module defines the following functions: .. function:: open(file, mode) If *file* is a string, open the file by that name, otherwise treat it as a seekable file-like object. *mode* can be any of ``'r'`` Read only mode. ``'w'`` Write only mode. Note that it does not allow read/write files. A *mode* of ``'r'`` returns an :class:`AU_read` object, while a *mode* of ``'w'`` or ``'wb'`` returns an :class:`AU_write` object. .. function:: openfp(file, mode) A synonym for :func:`.open`, maintained for backwards compatibility. The :mod:`sunau` module defines the following exception: .. exception:: Error An error raised when something is impossible because of Sun AU specs or implementation deficiency. The :mod:`sunau` module defines the following data items: .. data:: AUDIO_FILE_MAGIC An integer every valid Sun AU file begins with, stored in big-endian form. This is the string ``.snd`` interpreted as an integer. .. data:: AUDIO_FILE_ENCODING_MULAW_8 AUDIO_FILE_ENCODING_LINEAR_8 AUDIO_FILE_ENCODING_LINEAR_16 AUDIO_FILE_ENCODING_LINEAR_24 AUDIO_FILE_ENCODING_LINEAR_32 AUDIO_FILE_ENCODING_ALAW_8 Values of the encoding field from the AU header which are supported by this module. .. data:: AUDIO_FILE_ENCODING_FLOAT AUDIO_FILE_ENCODING_DOUBLE AUDIO_FILE_ENCODING_ADPCM_G721 AUDIO_FILE_ENCODING_ADPCM_G722 AUDIO_FILE_ENCODING_ADPCM_G723_3 AUDIO_FILE_ENCODING_ADPCM_G723_5 Additional known values of the encoding field from the AU header, but which are not supported by this module. .. _au-read-objects: AU_read Objects --------------- AU_read objects, as returned by :func:`.open` above, have the following methods: .. method:: AU_read.close() Close the stream, and make the instance unusable. (This is called automatically on deletion.) .. method:: AU_read.getnchannels() Returns number of audio channels (1 for mono, 2 for stereo). .. method:: AU_read.getsampwidth() Returns sample width in bytes. .. method:: AU_read.getframerate() Returns sampling frequency. .. method:: AU_read.getnframes() Returns number of audio frames. .. method:: AU_read.getcomptype() Returns compression type. Supported compression types are ``'ULAW'``, ``'ALAW'`` and ``'NONE'``. .. method:: AU_read.getcompname() Human-readable version of :meth:`getcomptype`. The supported types have the respective names ``'CCITT G.711 u-law'``, ``'CCITT G.711 A-law'`` and ``'not compressed'``. .. method:: AU_read.getparams() Returns a tuple ``(nchannels, sampwidth, framerate, nframes, comptype, compname)``, equivalent to output of the :meth:`get\*` methods. .. method:: AU_read.readframes(n) Reads and returns at most *n* frames of audio, as a string of bytes. The data will be returned in linear format. If the original data is in u-LAW format, it will be converted. .. method:: AU_read.rewind() Rewind the file pointer to the beginning of the audio stream. The following two methods define a term "position" which is compatible between them, and is otherwise implementation dependent. .. method:: AU_read.setpos(pos) Set the file pointer to the specified position. Only values returned from :meth:`tell` should be used for *pos*. .. method:: AU_read.tell() Return current file pointer position. Note that the returned value has nothing to do with the actual position in the file. The following two functions are defined for compatibility with the :mod:`aifc`, and don't do anything interesting. .. method:: AU_read.getmarkers() Returns ``None``. .. method:: AU_read.getmark(id) Raise an error. .. _au-write-objects: AU_write Objects ---------------- AU_write objects, as returned by :func:`.open` above, have the following methods: .. method:: AU_write.setnchannels(n) Set the number of channels. .. method:: AU_write.setsampwidth(n) Set the sample width (in bytes.) .. method:: AU_write.setframerate(n) Set the frame rate. .. method:: AU_write.setnframes(n) Set the number of frames. This can be later changed, when and if more frames are written. .. method:: AU_write.setcomptype(type, name) Set the compression type and description. Only ``'NONE'`` and ``'ULAW'`` are supported on output. .. method:: AU_write.setparams(tuple) The *tuple* should be ``(nchannels, sampwidth, framerate, nframes, comptype, compname)``, with values valid for the :meth:`set\*` methods. Set all parameters. .. method:: AU_write.tell() Return current position in the file, with the same disclaimer for the :meth:`AU_read.tell` and :meth:`AU_read.setpos` methods. .. method:: AU_write.writeframesraw(data) Write audio frames, without correcting *nframes*. .. method:: AU_write.writeframes(data) Write audio frames and make sure *nframes* is correct. .. method:: AU_write.close() Make sure *nframes* is correct, and close the file. This method is called upon deletion. Note that it is invalid to set any parameters after calling :meth:`writeframes` or :meth:`writeframesraw`.
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