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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
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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
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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
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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
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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
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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
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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
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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
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runpy.rst.txt
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sched.rst.txt
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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
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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
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unix.rst.txt
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urllib.rst.txt
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urllib2.rst.txt
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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 : email.parser.rst.txt
:mod:`email.parser`: Parsing email messages ------------------------------------------- .. module:: email.parser :synopsis: Parse flat text email messages to produce a message object structure. Message object structures can be created in one of two ways: they can be created from whole cloth by instantiating :class:`~email.message.Message` objects and stringing them together via :meth:`~email.message.Message.attach` and :meth:`~email.message.Message.set_payload` calls, or they can be created by parsing a flat text representation of the email message. The :mod:`email` package provides a standard parser that understands most email document structures, including MIME documents. You can pass the parser a string or a file object, and the parser will return to you the root :class:`~email.message.Message` instance of the object structure. For simple, non-MIME messages the payload of this root object will likely be a string containing the text of the message. For MIME messages, the root object will return ``True`` from its :meth:`~email.message.Message.is_multipart` method, and the subparts can be accessed via the :meth:`~email.message.Message.get_payload` and :meth:`~email.message.Message.walk` methods. There are actually two parser interfaces available for use, the classic :class:`Parser` API and the incremental :class:`FeedParser` API. The classic :class:`Parser` API is fine if you have the entire text of the message in memory as a string, or if the entire message lives in a file on the file system. :class:`FeedParser` is more appropriate for when you're reading the message from a stream which might block waiting for more input (e.g. reading an email message from a socket). The :class:`FeedParser` can consume and parse the message incrementally, and only returns the root object when you close the parser [#]_. Note that the parser can be extended in limited ways, and of course you can implement your own parser completely from scratch. There is no magical connection between the :mod:`email` package's bundled parser and the :class:`~email.message.Message` class, so your custom parser can create message object trees any way it finds necessary. FeedParser API ^^^^^^^^^^^^^^ .. versionadded:: 2.4 The :class:`FeedParser`, imported from the :mod:`email.feedparser` module, provides an API that is conducive to incremental parsing of email messages, such as would be necessary when reading the text of an email message from a source that can block (e.g. a socket). The :class:`FeedParser` can of course be used to parse an email message fully contained in a string or a file, but the classic :class:`Parser` API may be more convenient for such use cases. The semantics and results of the two parser APIs are identical. The :class:`FeedParser`'s API is simple; you create an instance, feed it a bunch of text until there's no more to feed it, then close the parser to retrieve the root message object. The :class:`FeedParser` is extremely accurate when parsing standards-compliant messages, and it does a very good job of parsing non-compliant messages, providing information about how a message was deemed broken. It will populate a message object's *defects* attribute with a list of any problems it found in a message. See the :mod:`email.errors` module for the list of defects that it can find. Here is the API for the :class:`FeedParser`: .. class:: FeedParser([_factory]) Create a :class:`FeedParser` instance. Optional *_factory* is a no-argument callable that will be called whenever a new message object is needed. It defaults to the :class:`email.message.Message` class. .. method:: feed(data) Feed the :class:`FeedParser` some more data. *data* should be a string containing one or more lines. The lines can be partial and the :class:`FeedParser` will stitch such partial lines together properly. The lines in the string can have any of the common three line endings, carriage return, newline, or carriage return and newline (they can even be mixed). .. method:: close() Closing a :class:`FeedParser` completes the parsing of all previously fed data, and returns the root message object. It is undefined what happens if you feed more data to a closed :class:`FeedParser`. Parser class API ^^^^^^^^^^^^^^^^ The :class:`Parser` class, imported from the :mod:`email.parser` module, provides an API that can be used to parse a message when the complete contents of the message are available in a string or file. The :mod:`email.parser` module also provides a second class, called :class:`HeaderParser` which can be used if you're only interested in the headers of the message. :class:`HeaderParser` can be much faster in these situations, since it does not attempt to parse the message body, instead setting the payload to the raw body as a string. :class:`HeaderParser` has the same API as the :class:`Parser` class. .. class:: Parser([_class]) The constructor for the :class:`Parser` class takes an optional argument *_class*. This must be a callable factory (such as a function or a class), and it is used whenever a sub-message object needs to be created. It defaults to :class:`~email.message.Message` (see :mod:`email.message`). The factory will be called without arguments. The optional *strict* flag is ignored. .. deprecated:: 2.4 Because the :class:`Parser` class is a backward compatible API wrapper around the new-in-Python 2.4 :class:`FeedParser`, *all* parsing is effectively non-strict. You should simply stop passing a *strict* flag to the :class:`Parser` constructor. .. versionchanged:: 2.2.2 The *strict* flag was added. .. versionchanged:: 2.4 The *strict* flag was deprecated. The other public :class:`Parser` methods are: .. method:: parse(fp[, headersonly]) Read all the data from the file-like object *fp*, parse the resulting text, and return the root message object. *fp* must support both the :meth:`~io.TextIOBase.readline` and the :meth:`~io.TextIOBase.read` methods on file-like objects. The text contained in *fp* must be formatted as a block of :rfc:`2822` style headers and header continuation lines, optionally preceded by an envelope header. The header block is terminated either by the end of the data or by a blank line. Following the header block is the body of the message (which may contain MIME-encoded subparts). Optional *headersonly* is a flag specifying whether to stop parsing after reading the headers or not. The default is ``False``, meaning it parses the entire contents of the file. .. versionchanged:: 2.2.2 The *headersonly* flag was added. .. method:: parsestr(text[, headersonly]) Similar to the :meth:`parse` method, except it takes a string object instead of a file-like object. Calling this method on a string is exactly equivalent to wrapping *text* in a :class:`~StringIO.StringIO` instance first and calling :meth:`parse`. Optional *headersonly* is as with the :meth:`parse` method. .. versionchanged:: 2.2.2 The *headersonly* flag was added. Since creating a message object structure from a string or a file object is such a common task, two functions are provided as a convenience. They are available in the top-level :mod:`email` package namespace. .. currentmodule:: email .. function:: message_from_string(s[, _class[, strict]]) Return a message object structure from a string. This is exactly equivalent to ``Parser().parsestr(s)``. Optional *_class* and *strict* are interpreted as with the :class:`~email.parser.Parser` class constructor. .. versionchanged:: 2.2.2 The *strict* flag was added. .. function:: message_from_file(fp[, _class[, strict]]) Return a message object structure tree from an open file object. This is exactly equivalent to ``Parser().parse(fp)``. Optional *_class* and *strict* are interpreted as with the :class:`~email.parser.Parser` class constructor. .. versionchanged:: 2.2.2 The *strict* flag was added. Here's an example of how you might use this at an interactive Python prompt:: >>> import email >>> msg = email.message_from_string(myString) Additional notes ^^^^^^^^^^^^^^^^ Here are some notes on the parsing semantics: * Most non-\ :mimetype:`multipart` type messages are parsed as a single message object with a string payload. These objects will return ``False`` for :meth:`~email.message.Message.is_multipart`. Their :meth:`~email.message.Message.get_payload` method will return a string object. * All :mimetype:`multipart` type messages will be parsed as a container message object with a list of sub-message objects for their payload. The outer container message will return ``True`` for :meth:`~email.message.Message.is_multipart` and their :meth:`~email.message.Message.get_payload` method will return the list of :class:`~email.message.Message` subparts. * Most messages with a content type of :mimetype:`message/\*` (e.g. :mimetype:`message/delivery-status` and :mimetype:`message/rfc822`) will also be parsed as container object containing a list payload of length 1. Their :meth:`~email.message.Message.is_multipart` method will return ``True``. The single element in the list payload will be a sub-message object. * Some non-standards compliant messages may not be internally consistent about their :mimetype:`multipart`\ -edness. Such messages may have a :mailheader:`Content-Type` header of type :mimetype:`multipart`, but their :meth:`~email.message.Message.is_multipart` method may return ``False``. If such messages were parsed with the :class:`~email.parser.FeedParser`, they will have an instance of the :class:`~email.errors.MultipartInvariantViolationDefect` class in their *defects* attribute list. See :mod:`email.errors` for details. .. rubric:: Footnotes .. [#] As of email package version 3.0, introduced in Python 2.4, the classic :class:`~email.parser.Parser` was re-implemented in terms of the :class:`~email.parser.FeedParser`, so the semantics and results are identical between the two parsers.
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