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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
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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
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
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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
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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
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
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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
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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
81.01
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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 : bdb.rst.txt
:mod:`bdb` --- Debugger framework ================================= .. module:: bdb :synopsis: Debugger framework. **Source code:** :source:`Lib/bdb.py` -------------- The :mod:`bdb` module handles basic debugger functions, like setting breakpoints or managing execution via the debugger. The following exception is defined: .. exception:: BdbQuit Exception raised by the :class:`Bdb` class for quitting the debugger. The :mod:`bdb` module also defines two classes: .. class:: Breakpoint(self, file, line, temporary=0, cond=None, funcname=None) This class implements temporary breakpoints, ignore counts, disabling and (re-)enabling, and conditionals. Breakpoints are indexed by number through a list called :attr:`bpbynumber` and by ``(file, line)`` pairs through :attr:`bplist`. The former points to a single instance of class :class:`Breakpoint`. The latter points to a list of such instances since there may be more than one breakpoint per line. When creating a breakpoint, its associated filename should be in canonical form. If a *funcname* is defined, a breakpoint hit will be counted when the first line of that function is executed. A conditional breakpoint always counts a hit. :class:`Breakpoint` instances have the following methods: .. method:: deleteMe() Delete the breakpoint from the list associated to a file/line. If it is the last breakpoint in that position, it also deletes the entry for the file/line. .. method:: enable() Mark the breakpoint as enabled. .. method:: disable() Mark the breakpoint as disabled. .. method:: pprint([out]) Print all the information about the breakpoint: * The breakpoint number. * If it is temporary or not. * Its file,line position. * The condition that causes a break. * If it must be ignored the next N times. * The breakpoint hit count. .. class:: Bdb(skip=None) The :class:`Bdb` class acts as a generic Python debugger base class. This class takes care of the details of the trace facility; a derived class should implement user interaction. The standard debugger class (:class:`pdb.Pdb`) is an example. The *skip* argument, if given, must be an iterable of glob-style module name patterns. The debugger will not step into frames that originate in a module that matches one of these patterns. Whether a frame is considered to originate in a certain module is determined by the ``__name__`` in the frame globals. .. versionadded:: 2.7 The *skip* argument. The following methods of :class:`Bdb` normally don't need to be overridden. .. method:: canonic(filename) Auxiliary method for getting a filename in a canonical form, that is, as a case-normalized (on case-insensitive filesystems) absolute path, stripped of surrounding angle brackets. .. method:: reset() Set the :attr:`botframe`, :attr:`stopframe`, :attr:`returnframe` and :attr:`quitting` attributes with values ready to start debugging. .. method:: trace_dispatch(frame, event, arg) This function is installed as the trace function of debugged frames. Its return value is the new trace function (in most cases, that is, itself). The default implementation decides how to dispatch a frame, depending on the type of event (passed as a string) that is about to be executed. *event* can be one of the following: * ``"line"``: A new line of code is going to be executed. * ``"call"``: A function is about to be called, or another code block entered. * ``"return"``: A function or other code block is about to return. * ``"exception"``: An exception has occurred. * ``"c_call"``: A C function is about to be called. * ``"c_return"``: A C function has returned. * ``"c_exception"``: A C function has raised an exception. For the Python events, specialized functions (see below) are called. For the C events, no action is taken. The *arg* parameter depends on the previous event. See the documentation for :func:`sys.settrace` for more information on the trace function. For more information on code and frame objects, refer to :ref:`types`. .. method:: dispatch_line(frame) If the debugger should stop on the current line, invoke the :meth:`user_line` method (which should be overridden in subclasses). Raise a :exc:`BdbQuit` exception if the :attr:`Bdb.quitting` flag is set (which can be set from :meth:`user_line`). Return a reference to the :meth:`trace_dispatch` method for further tracing in that scope. .. method:: dispatch_call(frame, arg) If the debugger should stop on this function call, invoke the :meth:`user_call` method (which should be overridden in subclasses). Raise a :exc:`BdbQuit` exception if the :attr:`Bdb.quitting` flag is set (which can be set from :meth:`user_call`). Return a reference to the :meth:`trace_dispatch` method for further tracing in that scope. .. method:: dispatch_return(frame, arg) If the debugger should stop on this function return, invoke the :meth:`user_return` method (which should be overridden in subclasses). Raise a :exc:`BdbQuit` exception if the :attr:`Bdb.quitting` flag is set (which can be set from :meth:`user_return`). Return a reference to the :meth:`trace_dispatch` method for further tracing in that scope. .. method:: dispatch_exception(frame, arg) If the debugger should stop at this exception, invokes the :meth:`user_exception` method (which should be overridden in subclasses). Raise a :exc:`BdbQuit` exception if the :attr:`Bdb.quitting` flag is set (which can be set from :meth:`user_exception`). Return a reference to the :meth:`trace_dispatch` method for further tracing in that scope. Normally derived classes don't override the following methods, but they may if they want to redefine the definition of stopping and breakpoints. .. method:: stop_here(frame) This method checks if the *frame* is somewhere below :attr:`botframe` in the call stack. :attr:`botframe` is the frame in which debugging started. .. method:: break_here(frame) This method checks if there is a breakpoint in the filename and line belonging to *frame* or, at least, in the current function. If the breakpoint is a temporary one, this method deletes it. .. method:: break_anywhere(frame) This method checks if there is a breakpoint in the filename of the current frame. Derived classes should override these methods to gain control over debugger operation. .. method:: user_call(frame, argument_list) This method is called from :meth:`dispatch_call` when there is the possibility that a break might be necessary anywhere inside the called function. .. method:: user_line(frame) This method is called from :meth:`dispatch_line` when either :meth:`stop_here` or :meth:`break_here` yields ``True``. .. method:: user_return(frame, return_value) This method is called from :meth:`dispatch_return` when :meth:`stop_here` yields ``True``. .. method:: user_exception(frame, exc_info) This method is called from :meth:`dispatch_exception` when :meth:`stop_here` yields ``True``. .. method:: do_clear(arg) Handle how a breakpoint must be removed when it is a temporary one. This method must be implemented by derived classes. Derived classes and clients can call the following methods to affect the stepping state. .. method:: set_step() Stop after one line of code. .. method:: set_next(frame) Stop on the next line in or below the given frame. .. method:: set_return(frame) Stop when returning from the given frame. .. method:: set_until(frame) Stop when the line with the line no greater than the current one is reached or when returning from current frame. .. method:: set_trace([frame]) Start debugging from *frame*. If *frame* is not specified, debugging starts from caller's frame. .. method:: set_continue() Stop only at breakpoints or when finished. If there are no breakpoints, set the system trace function to ``None``. .. method:: set_quit() Set the :attr:`quitting` attribute to ``True``. This raises :exc:`BdbQuit` in the next call to one of the :meth:`dispatch_\*` methods. Derived classes and clients can call the following methods to manipulate breakpoints. These methods return a string containing an error message if something went wrong, or ``None`` if all is well. .. method:: set_break(filename, lineno, temporary=0, cond=None, funcname=None) Set a new breakpoint. If the *lineno* line doesn't exist for the *filename* passed as argument, return an error message. The *filename* should be in canonical form, as described in the :meth:`canonic` method. .. method:: clear_break(filename, lineno) Delete the breakpoints in *filename* and *lineno*. If none were set, an error message is returned. .. method:: clear_bpbynumber(arg) Delete the breakpoint which has the index *arg* in the :attr:`Breakpoint.bpbynumber`. If *arg* is not numeric or out of range, return an error message. .. method:: clear_all_file_breaks(filename) Delete all breakpoints in *filename*. If none were set, an error message is returned. .. method:: clear_all_breaks() Delete all existing breakpoints. .. method:: get_break(filename, lineno) Check if there is a breakpoint for *lineno* of *filename*. .. method:: get_breaks(filename, lineno) Return all breakpoints for *lineno* in *filename*, or an empty list if none are set. .. method:: get_file_breaks(filename) Return all breakpoints in *filename*, or an empty list if none are set. .. method:: get_all_breaks() Return all breakpoints that are set. Derived classes and clients can call the following methods to get a data structure representing a stack trace. .. method:: get_stack(f, t) Get a list of records for a frame and all higher (calling) and lower frames, and the size of the higher part. .. method:: format_stack_entry(frame_lineno, [lprefix=': ']) Return a string with information about a stack entry, identified by a ``(frame, lineno)`` tuple: * The canonical form of the filename which contains the frame. * The function name, or ``"<lambda>"``. * The input arguments. * The return value. * The line of code (if it exists). The following two methods can be called by clients to use a debugger to debug a :term:`statement`, given as a string. .. method:: run(cmd, [globals, [locals]]) Debug a statement executed via the :keyword:`exec` statement. *globals* defaults to :attr:`__main__.__dict__`, *locals* defaults to *globals*. .. method:: runeval(expr, [globals, [locals]]) Debug an expression executed via the :func:`eval` function. *globals* and *locals* have the same meaning as in :meth:`run`. .. method:: runctx(cmd, globals, locals) For backwards compatibility. Calls the :meth:`run` method. .. method:: runcall(func, *args, **kwds) Debug a single function call, and return its result. Finally, the module defines the following functions: .. function:: checkfuncname(b, frame) Check whether we should break here, depending on the way the breakpoint *b* was set. If it was set via line number, it checks if ``b.line`` is the same as the one in the frame also passed as argument. If the breakpoint was set via function name, we have to check we are in the right frame (the right function) and if we are in its first executable line. .. function:: effective(file, line, frame) Determine if there is an effective (active) breakpoint at this line of code. Return a tuple of the breakpoint and a boolean that indicates if it is ok to delete a temporary breakpoint. Return ``(None, None)`` if there is no matching breakpoint. .. function:: set_trace() Start debugging with a :class:`Bdb` instance from caller's frame.
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