File: //lib/python2.7/site-packages/jinja2/filters.pyc
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jinja2.filters
~~~~~~~~~~~~~~
Bundled jinja filters.
:copyright: (c) 2010 by the Jinja Team.
:license: BSD, see LICENSE for more details.
iN( t choice( t
itemgetter( t groupby( t Markupt escapet pformatt urlizet soft_unicodet unicode_urlencode( t Undefined( t FilterArgumentError( t nextt imapt string_typest text_typet iteritemss \w+(?u)c C s
t | _ | S( sx Decorator for marking context dependent filters. The current
:class:`Context` will be passed as first argument.
( t Truet
contextfilter( t f( ( s2 /usr/lib/python2.7/site-packages/jinja2/filters.pyR s c C s
t | _ | S( s Decorator for marking eval-context dependent filters. An eval
context object is passed as first argument. For more information
about the eval context, see :ref:`eval-context`.
.. versionadded:: 2.4
( R t evalcontextfilter( R ( ( s2 /usr/lib/python2.7/site-packages/jinja2/filters.pyR # s c C s
t | _ | S( s Decorator for marking evironment dependent filters. The current
:class:`Environment` is passed to the filter as first argument.
( R t environmentfilter( R ( ( s2 /usr/lib/python2.7/site-packages/jinja2/filters.pyR . s c s^ t t s) d k r9 j r9 f d S j d f d } | S( s Returns a callable that looks up the given attribute from a
passed object with the rules of the environment. Dots are allowed
to access attributes of attributes. Integer parts in paths are
looked up as integers.
t .c s j | S( N( t getitem( t x( t attributet environment( s2 /usr/lib/python2.7/site-packages/jinja2/filters.pyt <lambda>> s c sB x; D]3 } | j r( t | } n j | | } q W| S( N( t isdigitt intR ( t itemt part( R R ( s2 /usr/lib/python2.7/site-packages/jinja2/filters.pyt
attrgetter@ s
( t
isinstanceR
R t split( R R R ( ( R R s2 /usr/lib/python2.7/site-packages/jinja2/filters.pyt make_attrgetter6 s c C s. t | d r | j } n t t | S( sC Enforce HTML escaping. This will probably double escape variables.t __html__( t hasattrR# R R ( t value( ( s2 /usr/lib/python2.7/site-packages/jinja2/filters.pyt do_forceescapeI s c C s d } t | t r$ t | } n6 t | t sZ y t | } WqZ t k
rV qZ Xn | d k rp t | Sd j d | D S( s Escape strings for use in URLs (uses UTF-8 encoding). It accepts both
dictionaries and regular strings as well as pairwise iterables.
.. versionadded:: 2.7
u &c s s/ | ]% \ } } t | d t | Vq d S( t =N( R ( t .0t kt v( ( s2 /usr/lib/python2.7/site-packages/jinja2/filters.pys <genexpr>` s N( t NoneR t dictR R
t itert TypeErrorR t join( R% t itemiter( ( s2 /usr/lib/python2.7/site-packages/jinja2/filters.pyt do_urlencodeP s
c C s | d k r d } n | j sC t | j t | t | | St | d sq t | d r t | d r t | } n t | } | j t | t | | S( s Return a copy of the value with all occurrences of a substring
replaced with a new one. The first argument is the substring
that should be replaced, the second is the replacement string.
If the optional third argument ``count`` is given, only the first
``count`` occurrences are replaced:
.. sourcecode:: jinja
{{ "Hello World"|replace("Hello", "Goodbye") }}
-> Goodbye World
{{ "aaaaargh"|replace("a", "d'oh, ", 2) }}
-> d'oh, d'oh, aaargh
iR# N( R+ t
autoescapeR t replaceR$ R R ( t eval_ctxt st oldt newt count( ( s2 /usr/lib/python2.7/site-packages/jinja2/filters.pyt
do_replaced s % c C s t | j S( s Convert a value to uppercase.( R t upper( R5 ( ( s2 /usr/lib/python2.7/site-packages/jinja2/filters.pyt do_upper s c C s t | j S( s Convert a value to lowercase.( R t lower( R5 ( ( s2 /usr/lib/python2.7/site-packages/jinja2/filters.pyt do_lower s c C sT d j d t | D } | r8 | r8 d | } n | j rP t | } n | S( sc Create an SGML/XML attribute string based on the items in a dict.
All values that are neither `none` nor `undefined` are automatically
escaped:
.. sourcecode:: html+jinja
<ul{{ {'class': 'my_list', 'missing': none,
'id': 'list-%d'|format(variable)}|xmlattr }}>
...
</ul>
Results in something like this:
.. sourcecode:: html
<ul class="my_list" id="list-42">
...
</ul>
As you can see it automatically prepends a space in front of the item
if the filter returned something unless the second parameter is false.
u c s sM | ]C \ } } | d k r t | t r d t | t | f Vq d S( u %s="%s"N( R+ R R R ( R( t keyR% ( ( s2 /usr/lib/python2.7/site-packages/jinja2/filters.pys <genexpr> s ( R/ R R2 R ( t _eval_ctxt dt autospacet rv( ( s2 /usr/lib/python2.7/site-packages/jinja2/filters.pyt
do_xmlattr s
c C s t | j S( sY Capitalize a value. The first character will be uppercase, all others
lowercase.
( R t
capitalize( R5 ( ( s2 /usr/lib/python2.7/site-packages/jinja2/filters.pyt
do_capitalize s c C sg g } xQ t j d j | D]7 } | s1 q n | j | d j | d j q Wd j | S( s Return a titlecased version of the value. I.e. words will start with
uppercase letters, all remaining characters are lowercase.
s ([-\s]+)(?u)i i t ( t ret compileR! t appendR: R< R/ ( R5 RB R ( ( s2 /usr/lib/python2.7/site-packages/jinja2/filters.pyt do_title s )R> c s^ | d k r d n! | d k r* d n t d f d } t | j d | S( s Sort a dict and yield (key, value) pairs. Because python dicts are
unsorted you may want to use this function to order them by either
key or value:
.. sourcecode:: jinja
{% for item in mydict|dictsort %}
sort the dict by key, case insensitive
{% for item in mydict|dictsort(true) %}
sort the dict by key, case sensitive
{% for item in mydict|dictsort(false, 'value') %}
sort the dict by key, case insensitive, sorted
normally and ordered by value.
R> i R% i s, You can only sort by either "key" or "value"c s3 | } t | t r/ r/ | j } n | S( N( R R
R< ( R R% ( t case_sensitivet pos( s2 /usr/lib/python2.7/site-packages/jinja2/filters.pyt sort_func s
( R
t sortedt items( R% RK t byRM ( ( RK RL s2 /usr/lib/python2.7/site-packages/jinja2/filters.pyt do_dictsort s c sg | s d } n d } | d k rQ t | | | p? d f d } n t | d | d | S( s Sort an iterable. Per default it sorts ascending, if you pass it
true as first argument it will reverse the sorting.
If the iterable is made of strings the third parameter can be used to
control the case sensitiveness of the comparison which is disabled by
default.
.. sourcecode:: jinja
{% for item in iterable|sort %}
...
{% endfor %}
It is also possible to sort by an attribute (for example to sort
by the date of an object) by specifying the `attribute` parameter:
.. sourcecode:: jinja
{% for item in iterable|sort(attribute='date') %}
...
{% endfor %}
.. versionchanged:: 2.6
The `attribute` parameter was added.
c S s" t | t r | j } n | S( N( R R
R< ( R ( ( s2 /usr/lib/python2.7/site-packages/jinja2/filters.pyRM s c S s | S( N( ( R ( ( s2 /usr/lib/python2.7/site-packages/jinja2/filters.pyR s c s | | S( N( ( R t processor( t getter( s2 /usr/lib/python2.7/site-packages/jinja2/filters.pyRM s R> t reverseN( R+ R" RN ( R R% RT RK R RM ( ( RS s2 /usr/lib/python2.7/site-packages/jinja2/filters.pyt do_sort s u c C s$ t | t s | r | r | S| S( s If the value is undefined it will return the passed default value,
otherwise the value of the variable:
.. sourcecode:: jinja
{{ my_variable|default('my_variable is not defined') }}
This will output the value of ``my_variable`` if the variable was
defined, otherwise ``'my_variable is not defined'``. If you want
to use default with variables that evaluate to false you have to
set the second parameter to `true`:
.. sourcecode:: jinja
{{ ''|default('the string was empty', true) }}
( R R ( R% t
default_valuet boolean( ( s2 /usr/lib/python2.7/site-packages/jinja2/filters.pyt
do_default s c C s | d k r* t t | j | | } n | j sO t | j t t | St | d s t | } t } xB t
| D]4 \ } } t | d r t } q} t | | | <q} W| r t | } n t | } | j | St
| j t t
| S( s# Return a string which is the concatenation of the strings in the
sequence. The separator between elements is an empty string per
default, you can define it with the optional parameter:
.. sourcecode:: jinja
{{ [1, 2, 3]|join('|') }}
-> 1|2|3
{{ [1, 2, 3]|join }}
-> 123
It is also possible to join certain attributes of an object:
.. sourcecode:: jinja
{{ users|join(', ', attribute='username') }}
.. versionadded:: 2.6
The `attribute` parameter was added.
R# N( R+ R R" R R2 R R/ R$ t listt Falset enumerateR R R ( R4 R% R@ R t do_escapet idxR ( ( s2 /usr/lib/python2.7/site-packages/jinja2/filters.pyt do_join" s
iP c C s t | j | S( s. Centers the value in a field of a given width.( R t center( R% t width( ( s2 /usr/lib/python2.7/site-packages/jinja2/filters.pyt do_centerT s c C s6 y t t | SWn t k
r1 | j d SXd S( s$ Return the first item of a sequence.s" No first item, sequence was empty.N( R R- t
StopIterationt undefined( R t seq( ( s2 /usr/lib/python2.7/site-packages/jinja2/filters.pyt do_firstY s
c C s< y t t t | SWn t k
r7 | j d SXd S( s# Return the last item of a sequence.s! No last item, sequence was empty.N( R R- t reversedRb Rc ( R Rd ( ( s2 /usr/lib/python2.7/site-packages/jinja2/filters.pyt do_lastb s
c C s0 y t | SWn t k
r+ | j d SXd S( s' Return a random item from the sequence.s# No random item, sequence was empty.N( R t
IndexErrorRc ( R Rd ( ( s2 /usr/lib/python2.7/site-packages/jinja2/filters.pyt do_randomk s
c C s' t | } | r d p d } | r* d p- d | r9 d p< d | rH d pK d | rW d pZ d
| rf d pi d | ru d
px d | r d p d | r d p d g } | d k r d S| | k r d | SxJ t | D]< \ } } | | d } | | k r d | | | | f Sq Wd | | | | f Sd S( s Format the value like a 'human-readable' file size (i.e. 13 kB,
4.1 MB, 102 Bytes, etc). Per default decimal prefixes are used (Mega,
Giga, etc.), if the second parameter is set to `True` the binary
prefixes are used (Mebi, Gibi).
i i t KiBt kBt MiBt MBt GiBt GBt TiBt TBt PiBt PBt EiBt EBt ZiBt ZBt YiBt YBi s 1 Bytes %d Bytesi s %.1f %sN( t floatR[ ( R% t binaryt bytest baset prefixest it prefixt unit( ( s2 /usr/lib/python2.7/site-packages/jinja2/filters.pyt do_filesizeformatt s& c C s t | d | S( s Pretty print a variable. Useful for debugging.
With Jinja 1.2 onwards you can pass it a parameter. If this parameter
is truthy the output will be more verbose (this requires `pretty`)
t verbose( R ( R% R ( ( s2 /usr/lib/python2.7/site-packages/jinja2/filters.pyt do_pprint s c C s. t | | | } | j r* t | } n | S( sd Converts URLs in plain text into clickable links.
If you pass the filter an additional integer it will shorten the urls
to that number. Also a third argument exists that makes the urls
"nofollow":
.. sourcecode:: jinja
{{ mytext|urlize(40, true) }}
links are shortened to 40 chars and defined with rel="nofollow"
( R R2 R ( R4 R% t trim_url_limitt nofollowRB ( ( s2 /usr/lib/python2.7/site-packages/jinja2/filters.pyt do_urlize s
i c C s: d | } d | j | j } | r6 | | } n | S( so Return a copy of the passed string, each line indented by
4 spaces. The first line is not indented. If you want to
change the number of spaces or indent the first line too
you can pass additional parameters to the filter:
.. sourcecode:: jinja
{{ mytext|indent(2, true) }}
indent by two spaces and indent the first line too.
u u
( R/ t
splitlines( R5 R` t indentfirstt indentionRB ( ( s2 /usr/lib/python2.7/site-packages/jinja2/filters.pyt do_indent s
i s ...c C s t | | k r | S| r( | | | S| j d } g } d } x? | D]7 } | t | d 7} | | k rt Pn | j | qJ W| j | d j | S( sS Return a truncated copy of the string. The length is specified
with the first parameter which defaults to ``255``. If the second
parameter is ``true`` the filter will cut the text at length. Otherwise
it will discard the last word. If the text was in fact
truncated it will append an ellipsis sign (``"..."``). If you want a
different ellipsis sign than ``"..."`` you can specify it using the
third parameter.
.. sourcecode:: jinja
{{ "foo bar"|truncate(5) }}
-> "foo ..."
{{ "foo bar"|truncate(5, True) }}
-> "foo b..."
t i i u ( t lenR! RI R/ ( R5 t lengtht killwordst endt wordst resultt mt word( ( s2 /usr/lib/python2.7/site-packages/jinja2/filters.pyt do_truncate s
iO c C sL | s | j } n d d l } | j | j | d | d t d t d | S( s
Return a copy of the string passed to the filter wrapped after
``79`` characters. You can override this default using the first
parameter. If you set the second parameter to `false` Jinja will not
split words apart if they are longer than `width`. By default, the newlines
will be the default newlines for the environment, but this can be changed
using the wrapstring keyword argument.
.. versionadded:: 2.7
Added support for the `wrapstring` parameter.
iNR` t expand_tabst replace_whitespacet break_long_words( t newline_sequencet textwrapR/ t wrapRZ ( R R5 R` R t
wrapstringR ( ( s2 /usr/lib/python2.7/site-packages/jinja2/filters.pyt do_wordwrap s c C s t t j | S( s Count the words in that string.( R t _word_ret findall( R5 ( ( s2 /usr/lib/python2.7/site-packages/jinja2/filters.pyt do_wordcount s i c C s[ y t | SWnF t t f k
rV y t t | SWqW t t f k
rR | SXn Xd S( s Convert the value into an integer. If the
conversion doesn't work it will return ``0``. You can
override this default using the first parameter.
N( R R. t
ValueErrorRz ( R% t default( ( s2 /usr/lib/python2.7/site-packages/jinja2/filters.pyt do_int s g c C s- y t | SWn t t f k
r( | SXd S( s Convert the value into a floating point number. If the
conversion doesn't work it will return ``0.0``. You can
override this default using the first parameter.
N( Rz R. R ( R% R ( ( s2 /usr/lib/python2.7/site-packages/jinja2/filters.pyt do_float s c O s/ | r | r t d n t | | p- | S( s
Apply python string formatting on an object:
.. sourcecode:: jinja
{{ "%s - %s"|format("Hello?", "Foo!") }}
-> Hello? - Foo!
s> can't handle positional and keyword arguments at the same time( R
R ( R% t argst kwargs( ( s2 /usr/lib/python2.7/site-packages/jinja2/filters.pyt do_format s c C s t | j S( s& Strip leading and trailing whitespace.( R t strip( R% ( ( s2 /usr/lib/python2.7/site-packages/jinja2/filters.pyt do_trim# s c C s4 t | d r | j } n t t | j S( sF Strip SGML/XML tags and replace adjacent whitespace by one space.
R# ( R$ R# R R t striptags( R% ( ( s2 /usr/lib/python2.7/site-packages/jinja2/filters.pyt do_striptags( s c c s t | } t | } | | } | | } d } x t | D]y } | | | } | | k rl | d 7} n | | d | }
| | |
!} | d k r | | k r | j | n | Vq? Wd S( sE Slice an iterator and return a list of lists containing
those items. Useful if you want to create a div containing
three ul tags that represent columns:
.. sourcecode:: html+jinja
<div class="columwrapper">
{%- for column in items|slice(3) %}
<ul class="column-{{ loop.index }}">
{%- for item in column %}
<li>{{ item }}</li>
{%- endfor %}
</ul>
{%- endfor %}
</div>
If you pass it a second argument it's used to fill missing
values on the last iteration.
i i N( RY R t rangeR+ RI ( R% t slicest fill_withRd R t items_per_slicet slices_with_extrat offsett slice_numbert startR t tmp( ( s2 /usr/lib/python2.7/site-packages/jinja2/filters.pyt do_slice0 s
c c s g } g } x; | D]3 } t | | k r9 | Vg } n | j | q W| r | d k r t | | k r | | g | t | 7} n | Vn d S( s
A filter that batches items. It works pretty much like `slice`
just the other way round. It returns a list of lists with the
given number of items. If you provide a second parameter this
is used to fill up missing items. See this example:
.. sourcecode:: html+jinja
<table>
{%- for row in items|batch(3, ' ') %}
<tr>
{%- for column in row %}
<td>{{ column }}</td>
{%- endfor %}
</tr>
{%- endfor %}
</table>
N( R RI R+ ( R% t linecountR R R R ( ( s2 /usr/lib/python2.7/site-packages/jinja2/filters.pyt do_batchT s
t commonc C s] | d k r t d n | d k r4 t | | St t | } | | d | d | S( s Round the number to a given precision. The first
parameter specifies the precision (default is ``0``), the
second the rounding method:
- ``'common'`` rounds either up or down
- ``'ceil'`` always rounds up
- ``'floor'`` always rounds down
If you don't specify a method ``'common'`` is used.
.. sourcecode:: jinja
{{ 42.55|round }}
-> 43.0
{{ 42.55|round(1, 'floor') }}
-> 42.5
Note that even if rounded to 0 precision, a float is returned. If
you need a real integer, pipe it through `int`:
.. sourcecode:: jinja
{{ 42.55|round|int }}
-> 43
R t ceilt floors$ method must be common, ceil or floori
( R R R ( R
t roundt getattrt math( R% t precisiont methodt func( ( s2 /usr/lib/python2.7/site-packages/jinja2/filters.pyt do_roundt s
c C s7 t | | } t t t t t | d | | S( s Group a sequence of objects by a common attribute.
If you for example have a list of dicts or objects that represent persons
with `gender`, `first_name` and `last_name` attributes and you want to
group all users by genders you can do something like the following
snippet:
.. sourcecode:: html+jinja
<ul>
{% for group in persons|groupby('gender') %}
<li>{{ group.grouper }}<ul>
{% for person in group.list %}
<li>{{ person.first_name }} {{ person.last_name }}</li>
{% endfor %}</ul></li>
{% endfor %}
</ul>
Additionally it's possible to use tuple unpacking for the grouper and
list:
.. sourcecode:: html+jinja
<ul>
{% for grouper, list in persons|groupby('gender') %}
...
{% endfor %}
</ul>
As you can see the item we're grouping by is stored in the `grouper`
attribute and the `list` contains all the objects that have this grouper
in common.
.. versionchanged:: 2.6
It's now possible to use dotted notation to group by the child
attribute of another attribute.
R> ( R" RN t mapt _GroupTupleR ( R R% R t expr( ( s2 /usr/lib/python2.7/site-packages/jinja2/filters.pyt
do_groupby s 'R c B s; e Z d Z e e d Z e e d Z d Z RS( i i c C s( | \ } } t j | | t | f S( N( t tuplet __new__RY ( t clst xxx_todo_changemeR> R% ( ( s2 /usr/lib/python2.7/site-packages/jinja2/filters.pyR s ( ( t __name__t
__module__t __slots__t propertyR t grouperRY R ( ( ( s2 /usr/lib/python2.7/site-packages/jinja2/filters.pyR s c C s4 | d k r' t t | | | } n t | | S( s Returns the sum of a sequence of numbers plus the value of parameter
'start' (which defaults to 0). When the sequence is empty it returns
start.
It is also possible to sum up only certain attributes:
.. sourcecode:: jinja
Total: {{ items|sum(attribute='price') }}
.. versionchanged:: 2.6
The `attribute` parameter was added to allow suming up over
attributes. Also the `start` parameter was moved on to the right.
N( R+ R R" t sum( R t iterableR R ( ( s2 /usr/lib/python2.7/site-packages/jinja2/filters.pyt do_sum s c C s
t | S( sk Convert the value into a list. If it was a string the returned list
will be a list of characters.
( RY ( R% ( ( s2 /usr/lib/python2.7/site-packages/jinja2/filters.pyt do_list s c C s
t | S( s Mark the value as safe which means that in an environment with automatic
escaping enabled this variable will not be escaped.
( R ( R% ( ( s2 /usr/lib/python2.7/site-packages/jinja2/filters.pyt do_mark_safe s c C s
t | S( sH Mark a value as unsafe. This is the reverse operation for :func:`safe`.( R ( R% ( ( s2 /usr/lib/python2.7/site-packages/jinja2/filters.pyt do_mark_unsafe s c C s t | t r | d d d Sy t | SWnO t k
r y t | } | j | SWq t k
r{ t d q Xn Xd S( s[ Reverse the object or return an iterator the iterates over it the other
way round.
Nis argument must be iterable( R R
Rf R. RY RT R
( R% RB ( ( s2 /usr/lib/python2.7/site-packages/jinja2/filters.pyt
do_reverse s
c C s y t | } Wn t k
r# n[ Xy t | | } Wn t k
rJ n4 X| j rz | j | | | rz | j | | S| S| j d | d | S( s Get an attribute of an object. ``foo|attr("bar")`` works like
``foo["bar"]`` just that always an attribute is returned and items are not
looked up.
See :ref:`Notes on subscriptions <notes-on-subscriptions>` for more details.
t objt name( t strt UnicodeErrorR t AttributeErrort sandboxedt is_safe_attributet unsafe_undefinedRc ( R R R R% ( ( s2 /usr/lib/python2.7/site-packages/jinja2/filters.pyt do_attr s
c / s d d } t d k r{ d k r{ j d } rf t d t t n t j | } nP y d d Wn t k
r t d n X f d } | r x | D] } | | Vq Wn d S(
s Applies a filter on a sequence of objects or looks up an attribute.
This is useful when dealing with lists of objects but you are really
only interested in a certain value of it.
The basic usage is mapping on an attribute. Imagine you have a list
of users but you are only interested in a list of usernames:
.. sourcecode:: jinja
Users on this page: {{ users|map(attribute='username')|join(', ') }}
Alternatively you can let it invoke a filter by passing the name of the
filter and the arguments afterwards. A good example would be applying a
text conversion filter on a sequence:
.. sourcecode:: jinja
Users on this page: {{ titles|map('lower')|join(', ') }}
.. versionadded:: 2.7
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c O s t | | d t S( s Filters a sequence of objects by appying a test to either the object
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Example usage:
.. sourcecode:: jinja
{{ numbers|select("odd") }}
.. versionadded:: 2.7
c S s | S( N( ( R ( ( s2 /usr/lib/python2.7/site-packages/jinja2/filters.pyR X s ( t _select_or_rejectRZ ( R R ( ( s2 /usr/lib/python2.7/site-packages/jinja2/filters.pyt do_selectK s
c O s t | | d t S( s Filters a sequence of objects by appying a test to either the object
or the attribute and rejecting the ones with the test succeeding.
Example usage:
.. sourcecode:: jinja
{{ numbers|reject("odd") }}
.. versionadded:: 2.7
c S s | S( N( ( R ( ( s2 /usr/lib/python2.7/site-packages/jinja2/filters.pyR h s ( R RZ ( R R ( ( s2 /usr/lib/python2.7/site-packages/jinja2/filters.pyt do_reject[ s
c O s t | | d t S( s; Filters a sequence of objects by appying a test to either the object
or the attribute and only selecting the ones with the test succeeding.
Example usage:
.. sourcecode:: jinja
{{ users|selectattr("is_active") }}
{{ users|selectattr("email", "none") }}
.. versionadded:: 2.7
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do_selectattrk s c O s t | | d t S( s" Filters a sequence of objects by appying a test to either the object
or the attribute and rejecting the ones with the test succeeding.
.. sourcecode:: jinja
{{ users|rejectattr("is_active") }}
{{ users|rejectattr("email", "none") }}
.. versionadded:: 2.7
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