How to use _GetFormatter method in autotest

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Hdf5Item.py

Source:Hdf5Item.py

1# /*##########################################################################2#3# Copyright (c) 2016-2019 European Synchrotron Radiation Facility4#5# Permission is hereby granted, free of charge, to any person obtaining a copy6# of this software and associated documentation files (the "Software"), to deal7# in the Software without restriction, including without limitation the rights8# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell9# copies of the Software, and to permit persons to whom the Software is10# furnished to do so, subject to the following conditions:11#12# The above copyright notice and this permission notice shall be included in13# all copies or substantial portions of the Software.14#15# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR16# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,17# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE18# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER19# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,20# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN21# THE SOFTWARE.22#23# ###########################################################################*/24__authors__ = ["V. Valls"]25__license__ = "MIT"26__date__ = "17/01/2019"27import logging28import collections29import enum30from typing import Optional31from .. import qt32from .. import icons33from . import _utils34from .Hdf5Node import Hdf5Node35import silx.io.utils36from silx.gui.data.TextFormatter import TextFormatter37from ..hdf5.Hdf5Formatter import Hdf5Formatter38_logger = logging.getLogger(__name__)39_formatter = TextFormatter()40_hdf5Formatter = Hdf5Formatter(textFormatter=_formatter)41# FIXME: The formatter should be an attribute of the Hdf5Model42class DescriptionType(enum.Enum):43    """List of available kind of description.44    """45    ERROR = "error"46    DESCRIPTION = "description"47    TITLE = "title"48    PROGRAM = "program"49    NAME = "name"50    VALUE = "value"51class Hdf5Item(Hdf5Node):52    """Subclass of :class:`qt.QStandardItem` to represent an HDF5-like53    item (dataset, file, group or link) as an element of a HDF5-like54    tree structure.55    """56    def __init__(57        self,58        text: Optional[str],59        obj,60        parent,61        key=None,62        h5Class=None,63        linkClass=None,64        populateAll=False,65        openedPath: Optional[str] = None,66    ):67        """68        :param text: text displayed69        :param object obj: Pointer to a h5py-link object. See the `obj` attribute.70        :param openedPath: The path with which the item was opened if any71        """72        self.__obj = obj73        self.__key = key74        self.__h5Class = h5Class75        self.__isBroken = obj is None and h5Class is None76        self.__error = None77        self.__text = text78        self.__linkClass = linkClass79        self.__description = None80        self.__nx_class = None81        Hdf5Node.__init__(self, parent, populateAll=populateAll, openedPath=openedPath)82    def _getCanonicalName(self):83        parent = self.parent84        if parent is None:85            return self.__text86        else:87            return "%s/%s" % (parent._getCanonicalName(), self.__text)88    @property89    def obj(self):90        if self.__key:91            self.__initH5Object()92        return self.__obj93    @property94    def basename(self):95        return self.__text96    @property97    def h5Class(self):98        """Returns the class of the stored object.99        When the object is in lazy loading, this method should be able to100        return the type of the future loaded object. It allows to delay the101        real load of the object.102        :rtype: silx.io.utils.H5Type103        """104        if self.__h5Class is None and self.obj is not None:105            self.__h5Class = silx.io.utils.get_h5_class(self.obj)106        return self.__h5Class107    @property108    def h5pyClass(self):109        """Returns the class of the stored object.110        When the object is in lazy loading, this method should be able to111        return the type of the future loaded object. It allows to delay the112        real load of the object.113        :rtype: h5py.File or h5py.Dataset or h5py.Group114        """115        type_ = self.h5Class116        return silx.io.utils.h5type_to_h5py_class(type_)117    @property118    def linkClass(self):119        """Returns the link class object of this node120        :rtype: H5Type121        """122        return self.__linkClass123    def isGroupObj(self):124        """Returns true if the stored HDF5 object is a group (contains sub125        groups or datasets).126        :rtype: bool127        """128        if self.h5Class is None:129            return False130        return self.h5Class in [silx.io.utils.H5Type.GROUP, silx.io.utils.H5Type.FILE]131    def isBrokenObj(self):132        """Returns true if the stored HDF5 object is broken.133        The stored object is then an h5py-like link (external or not) which134        point  to nowhere (tbhe external file is not here, the expected135        dataset is still not on the file...)136        :rtype: bool137        """138        return self.__isBroken139    def _getFormatter(self):140        """141        Returns an Hdf5Formatter142        :rtype: Hdf5Formatter143        """144        return _hdf5Formatter145    def _expectedChildCount(self):146        if self.isGroupObj():147            return len(self.obj)148        return 0149    def __initH5Object(self):150        """Lazy load of the HDF5 node. It is reached from the parent node151        with the key of the node."""152        parent_obj = self.parent.obj153        try:154            obj = parent_obj.get(self.__key)155        except Exception as e:156            _logger.error("Internal error while reaching HDF5 object: %s", str(e))157            _logger.debug("Backtrace", exc_info=True)158            try:159                self.__obj = parent_obj.get(self.__key, getlink=True)160            except Exception:161                self.__obj = None162            self.__error = e.args[0]163            self.__isBroken = True164        else:165            if obj is None:166                # that's a broken link167                self.__obj = parent_obj.get(self.__key, getlink=True)168                # TODO monkey-patch file (ask that in h5py for consistency)169                if not hasattr(self.__obj, "name"):170                    parent_name = parent_obj.name171                    if parent_name == "/":172                        self.__obj.name = "/" + self.__key173                    else:174                        self.__obj.name = parent_name + "/" + self.__key175                # TODO monkey-patch file (ask that in h5py for consistency)176                if not hasattr(self.__obj, "file"):177                    self.__obj.file = parent_obj.file178                class_ = silx.io.utils.get_h5_class(self.__obj)179                if class_ == silx.io.utils.H5Type.EXTERNAL_LINK:180                    message = "External link broken. Path %s::%s does not exist" % (self.__obj.filename, self.__obj.path)181                elif class_ == silx.io.utils.H5Type.SOFT_LINK:182                    message = "Soft link broken. Path %s does not exist" % (self.__obj.path)183                else:184                    name = self.__obj.__class__.__name__.split(".")[-1].capitalize()185                    message = "%s broken" % (name)186                self.__error = message187                self.__isBroken = True188            else:189                self.__obj = obj190                if silx.io.utils.get_h5_class(obj) not in [silx.io.utils.H5Type.GROUP, silx.io.utils.H5Type.FILE]:191                    try:192                        # pre-fetch of the data193                        if obj.shape is None:194                            pass195                        elif obj.shape == tuple():196                            obj[()]197                        else:198                            if obj.compression is None and obj.size > 0:199                                key = tuple([0] * len(obj.shape))200                                obj[key]201                    except Exception as e:202                        _logger.debug(e, exc_info=True)203                        message = "%s broken. %s" % (self.__obj.name, e.args[0])204                        self.__error = message205                        self.__isBroken = True206        self.__key = None207    def _populateChild(self, populateAll=False):208        if self.isGroupObj():209            keys = []210            try:211                for name in self.obj:212                    keys.append(name)213            except Exception:214                lib_name = self.obj.__class__.__module__.split(".")[0]215                _logger.error("Internal %s error. The file is corrupted.", lib_name)216                _logger.debug("Backtrace", exc_info=True)217                if keys == []:218                    # If the file was open in READ_ONLY we still can reach something219                    # https://github.com/silx-kit/silx/issues/2262220                    try:221                        for name in self.obj:222                            keys.append(name)223                    except Exception:224                        lib_name = self.obj.__class__.__module__.split(".")[0]225                        _logger.error("Internal %s error (second time). The file is corrupted.", lib_name)226                        _logger.debug("Backtrace", exc_info=True)227            for name in keys:228                try:229                    class_ = self.obj.get(name, getclass=True)230                    link = self.obj.get(name, getclass=True, getlink=True)231                    link = silx.io.utils.get_h5_class(class_=link)232                except Exception:233                    lib_name = self.obj.__class__.__module__.split(".")[0]234                    _logger.error("Internal %s error", lib_name)235                    _logger.debug("Backtrace", exc_info=True)236                    class_ = None237                    try:238                        link = self.obj.get(name, getclass=True, getlink=True)239                        link = silx.io.utils.get_h5_class(class_=link)240                    except Exception:241                        _logger.debug("Backtrace", exc_info=True)242                        link = silx.io.utils.H5Type.HARD_LINK243                h5class = None244                if class_ is not None:245                    h5class = silx.io.utils.get_h5_class(class_=class_)246                    if h5class is None:247                        _logger.error("Class %s unsupported", class_)248                item = Hdf5Item(text=name, obj=None, parent=self, key=name, h5Class=h5class, linkClass=link)249                self.appendChild(item)250    def hasChildren(self):251        """Retuens true of this node have chrild.252        :rtype: bool253        """254        if not self.isGroupObj():255            return False256        return Hdf5Node.hasChildren(self)257    def _getDefaultIcon(self):258        """Returns the icon displayed by the main column.259        :rtype: qt.QIcon260        """261        # Pre-fetch the object, in case it is broken262        obj = self.obj263        style = qt.QApplication.style()264        if self.__isBroken:265            icon = style.standardIcon(qt.QStyle.SP_MessageBoxCritical)266            return icon267        class_ = self.h5Class268        if class_ == silx.io.utils.H5Type.FILE:269            return style.standardIcon(qt.QStyle.SP_FileIcon)270        elif class_ == silx.io.utils.H5Type.GROUP:271            return style.standardIcon(qt.QStyle.SP_DirIcon)272        elif class_ == silx.io.utils.H5Type.SOFT_LINK:273            return style.standardIcon(qt.QStyle.SP_DirLinkIcon)274        elif class_ == silx.io.utils.H5Type.EXTERNAL_LINK:275            return style.standardIcon(qt.QStyle.SP_FileLinkIcon)276        elif class_ == silx.io.utils.H5Type.DATASET:277            if obj.shape is None:278                name = "item-none"279            elif len(obj.shape) < 4:280                name = "item-%ddim" % len(obj.shape)281            else:282                name = "item-ndim"283            icon = icons.getQIcon(name)284            return icon285        return None286    def _createTooltipAttributes(self):287        """288        Add key/value attributes that will be displayed in the item tooltip289        :param Dict[str,str] attributeDict: Key/value attributes290        """291        attributeDict = collections.OrderedDict()292        if self.h5Class == silx.io.utils.H5Type.DATASET:293            attributeDict["#Title"] = "HDF5 Dataset"294            attributeDict["Name"] = self.basename295            attributeDict["Path"] = self.obj.name296            attributeDict["Shape"] = self._getFormatter().humanReadableShape(self.obj)297            attributeDict["Value"] = self._getFormatter().humanReadableValue(self.obj)298            attributeDict["Data type"] = self._getFormatter().humanReadableType(self.obj, full=True)299        elif self.h5Class == silx.io.utils.H5Type.GROUP:300            attributeDict["#Title"] = "HDF5 Group"301            if self.nexusClassName:302                attributeDict["NX_class"] = self.nexusClassName303            attributeDict["Name"] = self.basename304            attributeDict["Path"] = self.obj.name305        elif self.h5Class == silx.io.utils.H5Type.FILE:306            attributeDict["#Title"] = "HDF5 File"307            attributeDict["Name"] = self.basename308            attributeDict["Path"] = "/"309        elif self.h5Class == silx.io.utils.H5Type.EXTERNAL_LINK:310            attributeDict["#Title"] = "HDF5 External Link"311            attributeDict["Name"] = self.basename312            attributeDict["Path"] = self.obj.name313            attributeDict["Linked path"] = self.obj.path314            attributeDict["Linked file"] = self.obj.filename315        elif self.h5Class == silx.io.utils.H5Type.SOFT_LINK:316            attributeDict["#Title"] = "HDF5 Soft Link"317            attributeDict["Name"] = self.basename318            attributeDict["Path"] = self.obj.name319            attributeDict["Linked path"] = self.obj.path320        else:321            pass322        return attributeDict323    def _getDefaultTooltip(self):324        """Returns the default tooltip325        :rtype: str326        """327        if self.__error is not None:328            self.obj  # lazy loading of the object329            return self.__error330        attrs = self._createTooltipAttributes()331        title = attrs.pop("#Title", None)332        if len(attrs) > 0:333            tooltip = _utils.htmlFromDict(attrs, title=title)334        else:335            tooltip = ""336        return tooltip337    @property338    def nexusClassName(self):339        """Returns the Nexus class name"""340        if self.__nx_class is None:341            obj = self.obj.attrs.get("NX_class", None)342            if obj is None:343                text = ""344            else:345                text = self._getFormatter().textFormatter().toString(obj)346                text = text.strip('"')347                # Check NX_class formatting348                lower = text.lower()349                formatedNX_class = ""350                if lower.startswith('nx'):351                    formatedNX_class = 'NX' + lower[2:]352                if lower == 'nxcansas':353                    formatedNX_class = 'NXcanSAS'  # That's the only class with capital letters...354                if text != formatedNX_class:355                    _logger.error("NX_class: '%s' is malformed (should be '%s')",356                                  text,357                                  formatedNX_class)358                text = formatedNX_class359            self.__nx_class = text360        return self.__nx_class361    def dataName(self, role):362        """Data for the name column"""363        if role == qt.Qt.TextAlignmentRole:364            return qt.Qt.AlignTop | qt.Qt.AlignLeft365        if role == qt.Qt.DisplayRole:366            return self.__text367        if role == qt.Qt.DecorationRole:368            return self._getDefaultIcon()369        if role == qt.Qt.ToolTipRole:370            return self._getDefaultTooltip()371        return None372    def dataType(self, role):373        """Data for the type column"""374        if role == qt.Qt.DecorationRole:375            return None376        if role == qt.Qt.TextAlignmentRole:377            return qt.Qt.AlignTop | qt.Qt.AlignLeft378        if role == qt.Qt.DisplayRole:379            if self.__error is not None:380                return ""381            class_ = self.h5Class382            if self.isGroupObj():383                text = self.nexusClassName384            elif class_ == silx.io.utils.H5Type.DATASET:385                text = self._getFormatter().humanReadableType(self.obj)386            else:387                text = ""388            return text389        return None390    def dataShape(self, role):391        """Data for the shape column"""392        if role == qt.Qt.DecorationRole:393            return None394        if role == qt.Qt.TextAlignmentRole:395            return qt.Qt.AlignTop | qt.Qt.AlignLeft396        if role == qt.Qt.DisplayRole:397            if self.__error is not None:398                return ""399            class_ = self.h5Class400            if class_ != silx.io.utils.H5Type.DATASET:401                return ""402            return self._getFormatter().humanReadableShape(self.obj)403        return None404    def dataValue(self, role):405        """Data for the value column"""406        if role == qt.Qt.DecorationRole:407            return None408        if role == qt.Qt.TextAlignmentRole:409            return qt.Qt.AlignTop | qt.Qt.AlignLeft410        if role == qt.Qt.DisplayRole:411            if self.__error is not None:412                return ""413            if self.h5Class != silx.io.utils.H5Type.DATASET:414                return ""415            return self._getFormatter().humanReadableValue(self.obj)416        return None417    _NEXUS_CLASS_TO_VALUE_CHILDREN = {418        'NXaperture': (419            (DescriptionType.DESCRIPTION, 'description'),420        ),421        'NXbeam_stop': (422            (DescriptionType.DESCRIPTION, 'description'),423        ),424        'NXdetector': (425            (DescriptionType.NAME, 'local_name'),426            (DescriptionType.DESCRIPTION, 'description')427        ),428        'NXentry': (429            (DescriptionType.TITLE, 'title'),430        ),431        'NXenvironment': (432            (DescriptionType.NAME, 'short_name'),433            (DescriptionType.NAME, 'name'),434            (DescriptionType.DESCRIPTION, 'description')435        ),436        'NXinstrument': (437            (DescriptionType.NAME, 'name'),438        ),439        'NXlog': (440            (DescriptionType.DESCRIPTION, 'description'),441        ),442        'NXmirror': (443            (DescriptionType.DESCRIPTION, 'description'),444        ),445        'NXpositioner': (446            (DescriptionType.NAME, 'name'),447        ),448        'NXprocess': (449            (DescriptionType.PROGRAM, 'program'),450        ),451        'NXsample': (452            (DescriptionType.TITLE, 'short_title'),453            (DescriptionType.NAME, 'name'),454            (DescriptionType.DESCRIPTION, 'description')455        ),456        'NXsample_component': (457            (DescriptionType.NAME, 'name'),458            (DescriptionType.DESCRIPTION, 'description')459        ),460        'NXsensor': (461            (DescriptionType.NAME, 'short_name'),462            (DescriptionType.NAME, 'name')463        ),464        'NXsource': (465            (DescriptionType.NAME, 'name'),466        ),  # or its 'short_name' attribute... This is not supported467        'NXsubentry': (468            (DescriptionType.DESCRIPTION, 'definition'),469            (DescriptionType.PROGRAM, 'program_name'),470            (DescriptionType.TITLE, 'title'),471        ),472    }473    """Mapping from NeXus class to child names containing data to use as value"""474    def __computeDataDescription(self):475        """Compute the data description of this item476        :rtype: Tuple[kind, str]477        """478        if self.__isBroken or self.__error is not None:479            self.obj  # lazy loading of the object480            return DescriptionType.ERROR, self.__error481        if self.h5Class == silx.io.utils.H5Type.DATASET:482            return DescriptionType.VALUE, self._getFormatter().humanReadableValue(self.obj)483        elif self.isGroupObj() and self.nexusClassName:484            # For NeXus groups, try to find a title or name485            # By default, look for a title (most application definitions should have one)486            defaultSequence = ((DescriptionType.TITLE, 'title'),)487            sequence = self._NEXUS_CLASS_TO_VALUE_CHILDREN.get(self.nexusClassName, defaultSequence)488            for kind, child_name in sequence:489                for index in range(self.childCount()):490                    child = self.child(index)491                    if (isinstance(child, Hdf5Item) and492                            child.h5Class == silx.io.utils.H5Type.DATASET and493                            child.basename == child_name):494                        return kind, self._getFormatter().humanReadableValue(child.obj)495        description = self.obj.attrs.get("desc", None)496        if description is not None:497            return DescriptionType.DESCRIPTION, description498        else:499            return None, None500    def __getDataDescription(self):501        """Returns a cached version of the data description502        As the data description have to reach inside the HDF5 tree, the result503        is cached. A better implementation could be to use a MRU cache, to avoid504        to allocate too much data.505        :rtype: Tuple[kind, str]506        """507        if self.__description is None:508            self.__description = self.__computeDataDescription()509        return self.__description510    def dataDescription(self, role):511        """Data for the description column"""512        if role == qt.Qt.DecorationRole:513            kind, _label = self.__getDataDescription()514            if kind is not None:515                icon = icons.getQIcon("description-%s" % kind.value)516                return icon517            return None518        if role == qt.Qt.TextAlignmentRole:519            return qt.Qt.AlignTop | qt.Qt.AlignLeft520        if role == qt.Qt.DisplayRole:521            _kind, label = self.__getDataDescription()522            return label523        if role == qt.Qt.ToolTipRole:524            if self.__error is not None:525                self.obj  # lazy loading of the object526                self.__initH5Object()527                return self.__error528            kind, label = self.__getDataDescription()529            if label is not None:530                return "<b>%s</b><br/>%s" % (kind.value.capitalize(), label)531            else:532                return ""533        return None534    def dataNode(self, role):535        """Data for the node column"""536        if role == qt.Qt.DecorationRole:537            return None538        if role == qt.Qt.TextAlignmentRole:539            return qt.Qt.AlignTop | qt.Qt.AlignLeft540        if role == qt.Qt.DisplayRole:541            if self.isBrokenObj():542                return ""543            class_ = self.obj.__class__544            text = class_.__name__.split(".")[-1]545            return text546        if role == qt.Qt.ToolTipRole:547            class_ = self.obj.__class__548            if class_ is None:549                return ""550            return "Class name: %s" % self.__class__551        return None552    def dataLink(self, role):553        """Data for the link column554        Overwrite it to implement the content of the 'link' column.555        :rtype: qt.QVariant556        """557        if role == qt.Qt.DecorationRole:558            return None559        if role == qt.Qt.TextAlignmentRole:560            return qt.Qt.AlignTop | qt.Qt.AlignLeft561        if role == qt.Qt.DisplayRole:562            # Mark as link563            link = self.linkClass564            if link is None:565                pass566            elif link == silx.io.utils.H5Type.HARD_LINK:567                pass568            elif link == silx.io.utils.H5Type.EXTERNAL_LINK:569                return "External"570            elif link == silx.io.utils.H5Type.SOFT_LINK:571                return "Soft"572            else:573                return link.__name__574            # Mark as external data575            if self.h5Class == silx.io.utils.H5Type.DATASET:576                obj = self.obj577                if hasattr(obj, "is_virtual"):578                    if obj.is_virtual:579                        return "Virtual"580                if hasattr(obj, "external"):581                    if obj.external:582                        return "ExtRaw"583            return ""584        if role == qt.Qt.ToolTipRole:585            return None...

log.py

Source:log.py

1"""Loggers and utilities related to logging.2Attributes:3    logger: main logging.Logger object.4"""5import logging6from typing import Any7from funky.utils import xdg8logger = logging.getLogger("funky")9def init_logger(debug: bool = False, verbose: bool = False) -> None:10    """Initializes the main logger.11    Args:12        debug (bool): If True, then set logging level to DEBUG (unless @verbose13                      is also set). Also, send log output to file in addition14                      to stdout.15        verbose (bool): If True and @debug is True, then set logging level to16                        VDEBUG.17    """18    _add_vdebug_level(logging)19    root = logging.getLogger()20    root.handlers.clear()  # clear handlers so this function is idempotent21    if debug:22        if verbose:23            level = logging.VDEBUG  # type: ignore[attr-defined]24        else:25            level = logging.DEBUG26    else:27        level = logging.INFO28    root.setLevel(level)29    sh = logging.StreamHandler()30    formatter = _getFormatter()31    sh.setFormatter(formatter)32    sh.setLevel(level)33    root.addHandler(sh)34    if debug:35        logfile_path = "{}/debug.log".format(xdg.getdir("data"))36        fh = logging.FileHandler(logfile_path)37        formatter = _getFormatter(verbose=True)38        fh.setFormatter(formatter)39        fh.setLevel(level)40        root.addHandler(fh)41        root.debug("Debug mode enabled.")42def _add_vdebug_level(logging_: Any) -> None:43    """Adds custom logging level for verbose debug logs."""44    VDEBUG_LEVEL_NUM = 545    logging_.addLevelName(VDEBUG_LEVEL_NUM, "VDEBUG")46    def vdebug(self: Any, message: str, *args: Any, **kwargs: Any) -> None:47        if self.isEnabledFor(VDEBUG_LEVEL_NUM):48            self._log(  # pylint: disable=protected-access49                VDEBUG_LEVEL_NUM, message, args, **kwargs50            )51    logging_.Logger.vdebug = vdebug52    logging_.VDEBUG = VDEBUG_LEVEL_NUM53def _getFormatter(verbose: bool = False) -> logging.Formatter:54    """Get log formatter.55    Args:56        verbose: True if a more verbose log format is desired.57    Returns:58        logging.Formatter object.59    """60    base_formatting = "[%(levelname)s] %(message)s"61    if verbose:62        formatter = logging.Formatter(63            "[%(process)s] (%(asctime)s) {}".format(base_formatting),64            datefmt="%Y-%m-%d %H:%M:%S",65        )66    else:67        formatter = logging.Formatter(base_formatting)...

logger.py

Source:logger.py

1from __future__ import division, absolute_import, print_function2import logging3__all__ = ['easy_setup']4def _getRootLogger():5    """Return the top-most, root python logger object."""6    log = logging.getLogger()7    return log8def _getFormatter():9    """Return a formatter that does a good job showing helpful information."""10    fmt = '%(asctime)s: %(name)-18s: %(levelname)-10s: %(message)s'11    formatter = logging.Formatter(fmt)12    return formatter13def _init():14    """Set up the root logger.15    You should call this method first before you call _addFileHandler()16    and _addStreamHandler().17    """18    log = _getRootLogger()19    log.setLevel(logging.DEBUG)20def _addFileHandler(filename, log_level, log):21    """Add a file to the list of logging destinations of the given logger.22    This is helpful for debugging crashes that happen out in the wild23    while you're not looking.24    """25    handler = logging.FileHandler(filename)26    handler.setLevel(log_level)27    handler.setFormatter(_getFormatter())28    log.addHandler(handler)29def _addStreamHandler(log_level, log):30    """Add the console (aka, terminal) as a logging destination of the given logger.31    This is helpful for debugging while you're sitting at your console.32    """33    handler = logging.StreamHandler()34    handler.setLevel(log_level)35    handler.setFormatter(_getFormatter())36    log.addHandler(handler)37def easy_setup(logger_name=None, console_output=False, filename=None):38    """Build a logger with the given name, optionally outputting to39    the console and/or to a file.40    A common use-case is to build a logger for each module by including41    a line like this at the top of each module file:42        log = logger.easy_setup(__name__, "{}_log.log".format(__name__))43    """44    _init()45    log = logging.getLogger(logger_name)46    if filename is not None:47        _addFileHandler(filename, logging.INFO, log)  # <-- log to a file48    if console_output:49        _addStreamHandler(logging.INFO, log)          # <-- log to the terminal...

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