Gecko [ www.corporacionhdm.com.pe ]

Name	Size	Permission	Date
__pycache__	[ DIR ]	drwxr-xr-x	2025-03-31 10:37
_pyrepl	[ DIR ]	drwxr-xr-x	2025-03-31 10:37
asyncio	[ DIR ]	drwxr-xr-x	2025-03-31 10:37
collections	[ DIR ]	drwxr-xr-x	2025-03-31 10:37
concurrent	[ DIR ]	drwxr-xr-x	2025-03-31 10:37
config-3.13-x86_64-linux-gnu	[ DIR ]	drwxr-xr-x	2025-03-31 10:38
ctypes	[ DIR ]	drwxr-xr-x	2025-03-31 10:37
curses	[ DIR ]	drwxr-xr-x	2025-03-31 10:37
dbm	[ DIR ]	drwxr-xr-x	2025-03-31 10:37
email	[ DIR ]	drwxr-xr-x	2025-03-31 10:37
encodings	[ DIR ]	drwxr-xr-x	2025-03-31 10:37
ensurepip	[ DIR ]	drwxr-xr-x	2025-03-31 10:37
html	[ DIR ]	drwxr-xr-x	2025-03-31 10:37
http	[ DIR ]	drwxr-xr-x	2025-03-31 10:37
importlib	[ DIR ]	drwxr-xr-x	2025-03-31 10:37
json	[ DIR ]	drwxr-xr-x	2025-03-31 10:37
lib-dynload	[ DIR ]	drwxr-xr-x	2025-03-31 10:37
logging	[ DIR ]	drwxr-xr-x	2025-03-31 10:37
multiprocessing	[ DIR ]	drwxr-xr-x	2025-03-31 10:37
pathlib	[ DIR ]	drwxr-xr-x	2025-03-31 10:37
pydoc_data	[ DIR ]	drwxr-xr-x	2025-03-31 10:37
re	[ DIR ]	drwxr-xr-x	2025-03-31 10:37
site-packages	[ DIR ]	drwxr-xr-x	2025-03-31 10:37
sqlite3	[ DIR ]	drwxr-xr-x	2025-03-31 10:37
sysconfig	[ DIR ]	drwxr-xr-x	2025-03-31 10:37
tomllib	[ DIR ]	drwxr-xr-x	2025-03-31 10:37
unittest	[ DIR ]	drwxr-xr-x	2025-03-31 10:37
urllib	[ DIR ]	drwxr-xr-x	2025-03-31 10:37
venv	[ DIR ]	drwxr-xr-x	2025-03-31 10:37
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zipfile	[ DIR ]	drwxr-xr-x	2025-03-31 10:37
zoneinfo	[ DIR ]	drwxr-xr-x	2025-03-31 10:37
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__future__.py	5.1 KB	-rw-r--r--	2025-03-04 12:23
__hello__.py	227 B	-rw-r--r--	2025-03-04 12:23
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abc.py	6.38 KB	-rw-r--r--	2025-03-04 12:22
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calendar.py	25.47 KB	-rw-r--r--	2025-03-04 12:23
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configparser.py	52.51 KB	-rw-r--r--	2025-03-04 12:22
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csv.py	18.73 KB	-rw-r--r--	2025-03-04 12:22
dataclasses.py	63.03 KB	-rw-r--r--	2025-03-04 12:23
datetime.py	268 B	-rw-r--r--	2025-03-04 12:23
decimal.py	2.73 KB	-rw-r--r--	2025-03-04 12:23
difflib.py	81.36 KB	-rw-r--r--	2025-03-04 12:22
dis.py	40 KB	-rw-r--r--	2025-03-04 12:22
doctest.py	106.77 KB	-rw-r--r--	2025-03-04 12:22
enum.py	83.44 KB	-rw-r--r--	2025-03-04 12:22
filecmp.py	10.4 KB	-rw-r--r--	2025-03-04 12:22
fileinput.py	15.35 KB	-rw-r--r--	2025-03-04 12:22
fnmatch.py	6.04 KB	-rw-r--r--	2025-03-04 12:22
fractions.py	39.08 KB	-rw-r--r--	2025-03-04 12:22
ftplib.py	33.92 KB	-rw-r--r--	2025-03-04 12:22
functools.py	38.69 KB	-rw-r--r--	2025-03-04 12:23
genericpath.py	5.84 KB	-rw-r--r--	2025-03-04 12:23
getopt.py	7.31 KB	-rw-r--r--	2025-03-04 12:23
getpass.py	6.09 KB	-rw-r--r--	2025-03-04 12:22
gettext.py	21.03 KB	-rw-r--r--	2025-03-04 12:23
glob.py	19.26 KB	-rw-r--r--	2025-03-04 12:22
graphlib.py	9.43 KB	-rw-r--r--	2025-03-04 12:22
gzip.py	23.53 KB	-rw-r--r--	2025-03-04 12:23
hashlib.py	9.13 KB	-rw-r--r--	2025-03-04 12:23
heapq.py	22.48 KB	-rw-r--r--	2025-03-04 12:22
hmac.py	7.54 KB	-rw-r--r--	2025-03-04 12:22
imaplib.py	52.77 KB	-rw-r--r--	2025-03-04 12:23
inspect.py	124.01 KB	-rw-r--r--	2025-03-04 12:23
io.py	3.5 KB	-rw-r--r--	2025-03-04 12:22
ipaddress.py	79.23 KB	-rw-r--r--	2025-03-04 12:23
keyword.py	1.05 KB	-rw-r--r--	2025-03-04 12:23
linecache.py	6.27 KB	-rw-r--r--	2025-03-04 12:22
locale.py	75.65 KB	-rw-r--r--	2025-03-04 12:23
lzma.py	13.08 KB	-rw-r--r--	2025-03-04 12:23
mailbox.py	79.73 KB	-rw-r--r--	2025-03-04 12:23
mimetypes.py	23.25 KB	-rw-r--r--	2025-03-04 12:23
modulefinder.py	23.23 KB	-rw-r--r--	2025-03-04 12:22
netrc.py	6.76 KB	-rw-r--r--	2025-03-04 12:22
ntpath.py	31.54 KB	-rw-r--r--	2025-03-04 12:22
nturl2path.py	2.32 KB	-rw-r--r--	2025-03-04 12:23
numbers.py	11.2 KB	-rw-r--r--	2025-03-04 12:23
opcode.py	2.76 KB	-rw-r--r--	2025-03-04 12:23
operator.py	10.72 KB	-rw-r--r--	2025-03-04 12:23
optparse.py	58.95 KB	-rw-r--r--	2025-03-04 12:23
os.py	40.58 KB	-rw-r--r--	2025-03-04 12:22
pdb.py	88.81 KB	-rwxr-xr-x	2025-03-04 12:22
pickle.py	65.39 KB	-rw-r--r--	2025-03-04 12:22
pickletools.py	91.85 KB	-rw-r--r--	2025-03-04 12:22
pkgutil.py	17.85 KB	-rw-r--r--	2025-03-04 12:22
platform.py	46.25 KB	-rwxr-xr-x	2025-03-04 12:22
plistlib.py	29.1 KB	-rw-r--r--	2025-03-04 12:22
poplib.py	13.85 KB	-rw-r--r--	2025-03-04 12:22
posixpath.py	17.53 KB	-rw-r--r--	2025-03-04 12:22
pprint.py	23.59 KB	-rw-r--r--	2025-03-04 12:22
profile.py	22.61 KB	-rwxr-xr-x	2025-03-04 12:22
pstats.py	28.61 KB	-rw-r--r--	2025-03-04 12:22
pty.py	5.99 KB	-rw-r--r--	2025-03-04 12:22
py_compile.py	7.65 KB	-rw-r--r--	2025-03-04 12:23
pyclbr.py	11.13 KB	-rw-r--r--	2025-03-04 12:22
pydoc.py	107.46 KB	-rwxr-xr-x	2025-03-04 12:22
queue.py	13.17 KB	-rw-r--r--	2025-03-04 12:23
quopri.py	7.03 KB	-rwxr-xr-x	2025-03-04 12:23
random.py	36.13 KB	-rw-r--r--	2025-03-04 12:22
reprlib.py	7.02 KB	-rw-r--r--	2025-03-04 12:22
rlcompleter.py	7.73 KB	-rw-r--r--	2025-03-04 12:23
runpy.py	12.58 KB	-rw-r--r--	2025-03-04 12:22
sched.py	6.2 KB	-rw-r--r--	2025-03-04 12:23
secrets.py	1.94 KB	-rw-r--r--	2025-03-04 12:22
selectors.py	19 KB	-rw-r--r--	2025-03-04 12:22
shelve.py	8.6 KB	-rw-r--r--	2025-03-04 12:23
shlex.py	13.04 KB	-rw-r--r--	2025-03-04 12:23
shutil.py	56.12 KB	-rw-r--r--	2025-03-04 12:23
signal.py	2.44 KB	-rw-r--r--	2025-03-04 12:23
site.py	24.79 KB	-rw-r--r--	2025-03-04 12:23
smtplib.py	42.52 KB	-rwxr-xr-x	2025-03-04 12:22
socket.py	36.87 KB	-rw-r--r--	2025-03-04 12:23
socketserver.py	27.41 KB	-rw-r--r--	2025-03-04 12:23
sre_compile.py	231 B	-rw-r--r--	2025-03-04 12:22
sre_constants.py	232 B	-rw-r--r--	2025-03-04 12:22
sre_parse.py	229 B	-rw-r--r--	2025-03-04 12:22
ssl.py	51.47 KB	-rw-r--r--	2025-03-04 12:23
stat.py	6 KB	-rw-r--r--	2025-03-04 12:23
statistics.py	60.38 KB	-rw-r--r--	2025-03-04 12:22
string.py	11.51 KB	-rw-r--r--	2025-03-04 12:23
stringprep.py	12.61 KB	-rw-r--r--	2025-03-04 12:22
struct.py	257 B	-rw-r--r--	2025-03-04 12:22
subprocess.py	87.48 KB	-rw-r--r--	2025-03-04 12:22
symtable.py	13.87 KB	-rw-r--r--	2025-03-04 12:23
tabnanny.py	11.27 KB	-rwxr-xr-x	2025-03-04 12:23
tarfile.py	107.5 KB	-rwxr-xr-x	2025-03-04 12:22
tempfile.py	31.46 KB	-rw-r--r--	2025-03-04 12:22
textwrap.py	19.47 KB	-rw-r--r--	2025-03-04 12:22
this.py	1003 B	-rw-r--r--	2025-03-04 12:22
threading.py	53.87 KB	-rw-r--r--	2025-03-04 12:23
timeit.py	13.16 KB	-rwxr-xr-x	2025-03-04 12:22
token.py	2.43 KB	-rw-r--r--	2025-03-04 12:22
tokenize.py	21.06 KB	-rw-r--r--	2025-03-04 12:23
trace.py	29.03 KB	-rwxr-xr-x	2025-03-04 12:22
traceback.py	63.9 KB	-rw-r--r--	2025-03-04 12:23
tracemalloc.py	17.62 KB	-rw-r--r--	2025-03-04 12:23
tty.py	1.99 KB	-rw-r--r--	2025-03-04 12:22
types.py	10.94 KB	-rw-r--r--	2025-03-04 12:22
typing.py	129.61 KB	-rw-r--r--	2025-03-04 12:23
uuid.py	28.46 KB	-rw-r--r--	2025-03-04 12:22
warnings.py	26.31 KB	-rw-r--r--	2025-03-04 12:22
wave.py	22.69 KB	-rw-r--r--	2025-03-04 12:22
weakref.py	21.01 KB	-rw-r--r--	2025-03-04 12:23
webbrowser.py	23.73 KB	-rwxr-xr-x	2025-03-04 12:23
zipapp.py	7.41 KB	-rw-r--r--	2025-03-04 12:22
zipimport.py	32.12 KB	-rw-r--r--	2025-03-04 12:23

Rename

from collections.abc import Sequence, Iterable
from functools import total_ordering
import fnmatch
import linecache
import os.path
import pickle

# Import types and functions implemented in C
from _tracemalloc import *
from _tracemalloc import _get_object_traceback, _get_traces

def _format_size(size, sign):
    for unit in ('B', 'KiB', 'MiB', 'GiB', 'TiB'):
        if abs(size) < 100 and unit != 'B':
            # 3 digits (xx.x UNIT)
            if sign:
                return "%+.1f %s" % (size, unit)
            else:
                return "%.1f %s" % (size, unit)
        if abs(size) < 10 * 1024 or unit == 'TiB':
            # 4 or 5 digits (xxxx UNIT)
            if sign:
                return "%+.0f %s" % (size, unit)
            else:
                return "%.0f %s" % (size, unit)
        size /= 1024

class Statistic:
    """
    Statistic difference on memory allocations between two Snapshot instance.
    """

__slots__ = ('traceback', 'size', 'count')

def __init__(self, traceback, size, count):
        self.traceback = traceback
        self.size = size
        self.count = count

def __hash__(self):
        return hash((self.traceback, self.size, self.count))

def __eq__(self, other):
        if not isinstance(other, Statistic):
            return NotImplemented
        return (self.traceback == other.traceback
                and self.size == other.size
                and self.count == other.count)

def __str__(self):
        text = ("%s: size=%s, count=%i"
                 % (self.traceback,
                    _format_size(self.size, False),
                    self.count))
        if self.count:
            average = self.size / self.count
            text += ", average=%s" % _format_size(average, False)
        return text

def __repr__(self):
        return ('<Statistic traceback=%r size=%i count=%i>'
                % (self.traceback, self.size, self.count))

def _sort_key(self):
        return (self.size, self.count, self.traceback)

class StatisticDiff:
    """
    Statistic difference on memory allocations between an old and a new
    Snapshot instance.
    """
    __slots__ = ('traceback', 'size', 'size_diff', 'count', 'count_diff')

def __init__(self, traceback, size, size_diff, count, count_diff):
        self.traceback = traceback
        self.size = size
        self.size_diff = size_diff
        self.count = count
        self.count_diff = count_diff

def __hash__(self):
        return hash((self.traceback, self.size, self.size_diff,
                     self.count, self.count_diff))

def __eq__(self, other):
        if not isinstance(other, StatisticDiff):
            return NotImplemented
        return (self.traceback == other.traceback
                and self.size == other.size
                and self.size_diff == other.size_diff
                and self.count == other.count
                and self.count_diff == other.count_diff)

def __str__(self):
        text = ("%s: size=%s (%s), count=%i (%+i)"
                % (self.traceback,
                   _format_size(self.size, False),
                   _format_size(self.size_diff, True),
                   self.count,
                   self.count_diff))
        if self.count:
            average = self.size / self.count
            text += ", average=%s" % _format_size(average, False)
        return text

def __repr__(self):
        return ('<StatisticDiff traceback=%r size=%i (%+i) count=%i (%+i)>'
                % (self.traceback, self.size, self.size_diff,
                   self.count, self.count_diff))

def _sort_key(self):
        return (abs(self.size_diff), self.size,
                abs(self.count_diff), self.count,
                self.traceback)

def _compare_grouped_stats(old_group, new_group):
    statistics = []
    for traceback, stat in new_group.items():
        previous = old_group.pop(traceback, None)
        if previous is not None:
            stat = StatisticDiff(traceback,
                                 stat.size, stat.size - previous.size,
                                 stat.count, stat.count - previous.count)
        else:
            stat = StatisticDiff(traceback,
                                 stat.size, stat.size,
                                 stat.count, stat.count)
        statistics.append(stat)

for traceback, stat in old_group.items():
        stat = StatisticDiff(traceback, 0, -stat.size, 0, -stat.count)
        statistics.append(stat)
    return statistics

@total_ordering
class Frame:
    """
    Frame of a traceback.
    """
    __slots__ = ("_frame",)

def __init__(self, frame):
        # frame is a tuple: (filename: str, lineno: int)
        self._frame = frame

@property
    def filename(self):
        return self._frame[0]

@property
    def lineno(self):
        return self._frame[1]

def __eq__(self, other):
        if not isinstance(other, Frame):
            return NotImplemented
        return (self._frame == other._frame)

def __lt__(self, other):
        if not isinstance(other, Frame):
            return NotImplemented
        return (self._frame < other._frame)

def __hash__(self):
        return hash(self._frame)

def __str__(self):
        return "%s:%s" % (self.filename, self.lineno)

def __repr__(self):
        return "<Frame filename=%r lineno=%r>" % (self.filename, self.lineno)

@total_ordering
class Traceback(Sequence):
    """
    Sequence of Frame instances sorted from the oldest frame
    to the most recent frame.
    """
    __slots__ = ("_frames", '_total_nframe')

def __init__(self, frames, total_nframe=None):
        Sequence.__init__(self)
        # frames is a tuple of frame tuples: see Frame constructor for the
        # format of a frame tuple; it is reversed, because _tracemalloc
        # returns frames sorted from most recent to oldest, but the
        # Python API expects oldest to most recent
        self._frames = tuple(reversed(frames))
        self._total_nframe = total_nframe

@property
    def total_nframe(self):
        return self._total_nframe

def __len__(self):
        return len(self._frames)

def __getitem__(self, index):
        if isinstance(index, slice):
            return tuple(Frame(trace) for trace in self._frames[index])
        else:
            return Frame(self._frames[index])

def __contains__(self, frame):
        return frame._frame in self._frames

def __hash__(self):
        return hash(self._frames)

def __eq__(self, other):
        if not isinstance(other, Traceback):
            return NotImplemented
        return (self._frames == other._frames)

def __lt__(self, other):
        if not isinstance(other, Traceback):
            return NotImplemented
        return (self._frames < other._frames)

def __str__(self):
        return str(self[0])

def __repr__(self):
        s = f"<Traceback {tuple(self)}"
        if self._total_nframe is None:
            s += ">"
        else:
            s += f" total_nframe={self.total_nframe}>"
        return s

def format(self, limit=None, most_recent_first=False):
        lines = []
        if limit is not None:
            if limit > 0:
                frame_slice = self[-limit:]
            else:
                frame_slice = self[:limit]
        else:
            frame_slice = self

if most_recent_first:
            frame_slice = reversed(frame_slice)
        for frame in frame_slice:
            lines.append('  File "%s", line %s'
                         % (frame.filename, frame.lineno))
            line = linecache.getline(frame.filename, frame.lineno).strip()
            if line:
                lines.append('    %s' % line)
        return lines

def get_object_traceback(obj):
    """
    Get the traceback where the Python object *obj* was allocated.
    Return a Traceback instance.

Return None if the tracemalloc module is not tracing memory allocations or
    did not trace the allocation of the object.
    """
    frames = _get_object_traceback(obj)
    if frames is not None:
        return Traceback(frames)
    else:
        return None

class Trace:
    """
    Trace of a memory block.
    """
    __slots__ = ("_trace",)

def __init__(self, trace):
        # trace is a tuple: (domain: int, size: int, traceback: tuple).
        # See Traceback constructor for the format of the traceback tuple.
        self._trace = trace

@property
    def domain(self):
        return self._trace[0]

@property
    def size(self):
        return self._trace[1]

@property
    def traceback(self):
        return Traceback(*self._trace[2:])

def __eq__(self, other):
        if not isinstance(other, Trace):
            return NotImplemented
        return (self._trace == other._trace)

def __hash__(self):
        return hash(self._trace)

def __str__(self):
        return "%s: %s" % (self.traceback, _format_size(self.size, False))

def __repr__(self):
        return ("<Trace domain=%s size=%s, traceback=%r>"
                % (self.domain, _format_size(self.size, False), self.traceback))

class _Traces(Sequence):
    def __init__(self, traces):
        Sequence.__init__(self)
        # traces is a tuple of trace tuples: see Trace constructor
        self._traces = traces

def __len__(self):
        return len(self._traces)

def __getitem__(self, index):
        if isinstance(index, slice):
            return tuple(Trace(trace) for trace in self._traces[index])
        else:
            return Trace(self._traces[index])

def __contains__(self, trace):
        return trace._trace in self._traces

def __eq__(self, other):
        if not isinstance(other, _Traces):
            return NotImplemented
        return (self._traces == other._traces)

def __repr__(self):
        return "<Traces len=%s>" % len(self)

def _normalize_filename(filename):
    filename = os.path.normcase(filename)
    if filename.endswith('.pyc'):
        filename = filename[:-1]
    return filename

class BaseFilter:
    def __init__(self, inclusive):
        self.inclusive = inclusive

def _match(self, trace):
        raise NotImplementedError

class Filter(BaseFilter):
    def __init__(self, inclusive, filename_pattern,
                 lineno=None, all_frames=False, domain=None):
        super().__init__(inclusive)
        self.inclusive = inclusive
        self._filename_pattern = _normalize_filename(filename_pattern)
        self.lineno = lineno
        self.all_frames = all_frames
        self.domain = domain

@property
    def filename_pattern(self):
        return self._filename_pattern

def _match_frame_impl(self, filename, lineno):
        filename = _normalize_filename(filename)
        if not fnmatch.fnmatch(filename, self._filename_pattern):
            return False
        if self.lineno is None:
            return True
        else:
            return (lineno == self.lineno)

def _match_frame(self, filename, lineno):
        return self._match_frame_impl(filename, lineno) ^ (not self.inclusive)

def _match_traceback(self, traceback):
        if self.all_frames:
            if any(self._match_frame_impl(filename, lineno)
                   for filename, lineno in traceback):
                return self.inclusive
            else:
                return (not self.inclusive)
        else:
            filename, lineno = traceback[0]
            return self._match_frame(filename, lineno)

def _match(self, trace):
        domain, size, traceback, total_nframe = trace
        res = self._match_traceback(traceback)
        if self.domain is not None:
            if self.inclusive:
                return res and (domain == self.domain)
            else:
                return res or (domain != self.domain)
        return res

class DomainFilter(BaseFilter):
    def __init__(self, inclusive, domain):
        super().__init__(inclusive)
        self._domain = domain

@property
    def domain(self):
        return self._domain

def _match(self, trace):
        domain, size, traceback, total_nframe = trace
        return (domain == self.domain) ^ (not self.inclusive)

class Snapshot:
    """
    Snapshot of traces of memory blocks allocated by Python.
    """

def __init__(self, traces, traceback_limit):
        # traces is a tuple of trace tuples: see _Traces constructor for
        # the exact format
        self.traces = _Traces(traces)
        self.traceback_limit = traceback_limit

def dump(self, filename):
        """
        Write the snapshot into a file.
        """
        with open(filename, "wb") as fp:
            pickle.dump(self, fp, pickle.HIGHEST_PROTOCOL)

@staticmethod
    def load(filename):
        """
        Load a snapshot from a file.
        """
        with open(filename, "rb") as fp:
            return pickle.load(fp)

def _filter_trace(self, include_filters, exclude_filters, trace):
        if include_filters:
            if not any(trace_filter._match(trace)
                       for trace_filter in include_filters):
                return False
        if exclude_filters:
            if any(not trace_filter._match(trace)
                   for trace_filter in exclude_filters):
                return False
        return True

def filter_traces(self, filters):
        """
        Create a new Snapshot instance with a filtered traces sequence, filters
        is a list of Filter or DomainFilter instances.  If filters is an empty
        list, return a new Snapshot instance with a copy of the traces.
        """
        if not isinstance(filters, Iterable):
            raise TypeError("filters must be a list of filters, not %s"
                            % type(filters).__name__)
        if filters:
            include_filters = []
            exclude_filters = []
            for trace_filter in filters:
                if trace_filter.inclusive:
                    include_filters.append(trace_filter)
                else:
                    exclude_filters.append(trace_filter)
            new_traces = [trace for trace in self.traces._traces
                          if self._filter_trace(include_filters,
                                                exclude_filters,
                                                trace)]
        else:
            new_traces = self.traces._traces.copy()
        return Snapshot(new_traces, self.traceback_limit)

def _group_by(self, key_type, cumulative):
        if key_type not in ('traceback', 'filename', 'lineno'):
            raise ValueError("unknown key_type: %r" % (key_type,))
        if cumulative and key_type not in ('lineno', 'filename'):
            raise ValueError("cumulative mode cannot by used "
                             "with key type %r" % key_type)

stats = {}
        tracebacks = {}
        if not cumulative:
            for trace in self.traces._traces:
                domain, size, trace_traceback, total_nframe = trace
                try:
                    traceback = tracebacks[trace_traceback]
                except KeyError:
                    if key_type == 'traceback':
                        frames = trace_traceback
                    elif key_type == 'lineno':
                        frames = trace_traceback[:1]
                    else: # key_type == 'filename':
                        frames = ((trace_traceback[0][0], 0),)
                    traceback = Traceback(frames)
                    tracebacks[trace_traceback] = traceback
                try:
                    stat = stats[traceback]
                    stat.size += size
                    stat.count += 1
                except KeyError:
                    stats[traceback] = Statistic(traceback, size, 1)
        else:
            # cumulative statistics
            for trace in self.traces._traces:
                domain, size, trace_traceback, total_nframe = trace
                for frame in trace_traceback:
                    try:
                        traceback = tracebacks[frame]
                    except KeyError:
                        if key_type == 'lineno':
                            frames = (frame,)
                        else: # key_type == 'filename':
                            frames = ((frame[0], 0),)
                        traceback = Traceback(frames)
                        tracebacks[frame] = traceback
                    try:
                        stat = stats[traceback]
                        stat.size += size
                        stat.count += 1
                    except KeyError:
                        stats[traceback] = Statistic(traceback, size, 1)
        return stats

def statistics(self, key_type, cumulative=False):
        """
        Group statistics by key_type. Return a sorted list of Statistic
        instances.
        """
        grouped = self._group_by(key_type, cumulative)
        statistics = list(grouped.values())
        statistics.sort(reverse=True, key=Statistic._sort_key)
        return statistics

def compare_to(self, old_snapshot, key_type, cumulative=False):
        """
        Compute the differences with an old snapshot old_snapshot. Get
        statistics as a sorted list of StatisticDiff instances, grouped by
        group_by.
        """
        new_group = self._group_by(key_type, cumulative)
        old_group = old_snapshot._group_by(key_type, cumulative)
        statistics = _compare_grouped_stats(old_group, new_group)
        statistics.sort(reverse=True, key=StatisticDiff._sort_key)
        return statistics

def take_snapshot():
    """
    Take a snapshot of traces of memory blocks allocated by Python.
    """
    if not is_tracing():
        raise RuntimeError("the tracemalloc module must be tracing memory "
                           "allocations to take a snapshot")
    traces = _get_traces()
    traceback_limit = get_traceback_limit()
    return Snapshot(traces, traceback_limit)