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Strings that only exceed the length by the tolerance margin given in the fourth parameter will not be truncated. .. sourcecode:: jinja {{ "foo bar baz qux"|truncate(9) }} -> "foo..." {{ "foo bar baz qux"|truncate(9, True) }} -> "foo ba..." {{ "foo bar baz qux"|truncate(11) }} -> "foo bar baz qux" {{ "foo bar baz qux"|truncate(11, False, '...', 0) }} -> "foo bar..." The default leeway on newer Jinja versions is 5 and was 0 before but can be reconfigured globally. Nztruncate.leewayzexpected length >= z, got rzexpected leeway >= 0, got rzr )rrSAssertionErrorrsplit)rrlrrrrresultr"r"r% do_truncateWs  $ rO)rArlrbreak_long_words wrapstringbreak_on_hyphensr cs:ddldkr|jfdd|DS)aWrap a string to the given width. 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If you pass it a second argument it's used to fill missing values on the last iteration. rr N)rrSrangeappend) r:rrrrZitems_per_sliceZslices_with_extraoffsetZ slice_numberstartrtmpr"r"r% sync_do_slices    r cstt|IdH||Sr!)r r)r:rrr"r"r%do_slice<sr )r: linecountrr ccsfg}|D]$}t||kr"|Vg}||q|rb|dk r\t||kr\||g|t|7}|VdS)a  A filter that batches items. It works pretty much like `slice` just the other way round. It returns a list of lists with the given number of items. If you provide a second parameter this is used to fill up missing items. See this example: .. sourcecode:: html+jinja {%- for row in items|batch(3, ' ') %} {%- for column in row %} {%- endfor %} {%- endfor %}
{{ column }}
N)rSr)r:r rr rFr"r"r%do_batchEs  r commonz%te.Literal["common", "ceil", "floor"])r: precisionmethodr cCsL|dkrtd|dkr"t||Stt|}tt||d|d|S)aRound the number to a given precision. The first parameter specifies the precision (default is ``0``), the second the rounding method: - ``'common'`` rounds either up or down - ``'ceil'`` always rounds up - ``'floor'`` always rounds down If you don't specify a method ``'common'`` is used. .. sourcecode:: jinja {{ 42.55|round }} -> 43.0 {{ 42.55|round(1, 'floor') }} -> 42.5 Note that even if rounded to 0 precision, a float is returned. If you need a real integer, pipe it through `int`: .. sourcecode:: jinja {{ 42.55|round|int }} -> 43 >ceilfloorrz$method must be common, ceil or floorrr)rroundgetattrmathr<r=r)r:rrrr"r"r%do_roundjs   rc@s>eZdZUejed<ejed<edddZedddZ dS) _GroupTupleZgrouperrrcCs t|Sr!)tuple__repr__r#r"r"r%rsz_GroupTuple.__repr__cCs t|Sr!)r__str__r#r"r"r%rsz_GroupTuple.__str__N) r'r(r)r<rM__annotations__rYr*rrr"r"r"r%rs   rz!t.List[t.Tuple[t.Any, t.List[V]]])rAr:rBrDr cCs*t|||d}ddtt||d|DS)a>Group a sequence of objects by an attribute using Python's :func:`itertools.groupby`. The attribute can use dot notation for nested access, like ``"address.city"``. Unlike Python's ``groupby``, the values are sorted first so only one group is returned for each unique value. For example, a list of ``User`` objects with a ``city`` attribute can be rendered in groups. In this example, ``grouper`` refers to the ``city`` value of the group. .. sourcecode:: html+jinja
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``groupby`` yields namedtuples of ``(grouper, list)``, which can be used instead of the tuple unpacking above. ``grouper`` is the value of the attribute, and ``list`` is the items with that value. .. sourcecode:: html+jinja
    {% for group in users|groupby("city") %}
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You can specify a ``default`` value to use if an object in the list does not have the given attribute. .. sourcecode:: jinja
    {% for city, items in users|groupby("city", default="NY") %}
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.. versionchanged:: 3.0 Added the ``default`` parameter. .. versionchanged:: 2.6 The attribute supports dot notation for nested access. rDcSsg|]\}}t|t|qSr")rrrQr|valuesr"r"r%rRsz#sync_do_groupby..r)rNrrrAr:rBrDexprr"r"r%sync_do_groupbys4r!cs:t|||d}ddttt|IdH|d|DIdHS)Nrcs$g|]\}}t|t|IdHqSr!)rrrr"r"r%rRszdo_groupby..r)rNrrrrr"r"r% do_groupbysr")rAiterablerBrr cCs"|dk rtt|||}t||S)aReturns the sum of a sequence of numbers plus the value of parameter 'start' (which defaults to 0). When the sequence is empty it returns start. It is also possible to sum up only certain attributes: .. sourcecode:: jinja Total: {{ items|sum(attribute='price') }} .. versionchanged:: 2.6 The `attribute` parameter was added to allow suming up over attributes. Also the `start` parameter was moved on to the right. N)rrNsum)rAr#rBrr"r"r% sync_do_sumsr%csP|}|dk rt||}nttddd}t|2z3dHW}|||7}q06|S)Nr^r cSs|Sr!r"r^r"r"r%rszdo_sum..func)rNr.r )rAr#rBrr}rrFr"r"r%do_sums r(cCst|S)zkConvert the value into a list. If it was a string the returned list will be a list of characters. )rr?r"r"r% sync_do_listsr)cst|IdHSr!r r?r"r"r%do_list sr*cCst|S)zMark the value as safe which means that in an environment with automatic escaping enabled this variable will not be escaped. rr?r"r"r% do_mark_safe%sr+cCst|S)zHMark a value as unsafe. This is the reverse operation for :func:`safe`.)r*r?r"r"r%do_mark_unsafe,sr,cCsdSr!r"r?r"r"r% do_reverse1sr-cCsdSr!r"r?r"r"r%r-6sc Cstt|tr|dddSz t|WStk rnzt|}||WYStk rhtdYnXYnXdS)z\Reverse the object or return an iterator that iterates over it the other way round. Nrpzargument must be iterable)r;r*rrrrr)r:r}r"r"r%r-;s   )rAobjnamer cCsz t|}Wntk r YnVXzt||}Wntk rDYn2X|jrrtd|}||||sr|||S|S|j ||dS)zGet an attribute of an object. ``foo|attr("bar")`` works like ``foo.bar`` just that always an attribute is returned and items are not looked up. See :ref:`Notes on subscriptions ` for more details. r)r.r/) r* UnicodeErrorrAttributeErrorZ sandboxedr<r=Zis_safe_attributeZunsafe_undefinedr)rAr.r/r:r"r"r%do_attrMs    r2)rr:r/rrr cOsdSr!r"rr:r/rrr"r"r% sync_do_maplsr4)rBrD)rr:rBrDr cCsdSr!r"rr:rBrDr"r"r%r4ss)rr:rrr cos(|r$t|||}|D]}||VqdS)aApplies 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(', ') }} You can specify a ``default`` value to use if an object in the list does not have the given attribute. .. sourcecode:: jinja {{ users|map(attribute="username", default="Anonymous")|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(', ') }} Similar to a generator comprehension such as: .. code-block:: python (u.username for u in users) (getattr(u, "username", "Anonymous") for u in users) (do_lower(x) for x in titles) .. versionchanged:: 2.11.0 Added the ``default`` parameter. .. versionadded:: 2.7 N) prepare_maprr:rrrrFr"r"r%r4~s+ cOsdSr!r"r3r"r"r%do_mapsr8cCsdSr!r"r5r"r"r%r8scOs@|rz sync_do_select..Fselect_or_rejectrr:rrr"r"r%sync_do_selectsr>zt.AsyncIterator[V]cst||||dddS)NcSs|Sr!r"r'r"r"r%r9r:zdo_select..Fasync_select_or_rejectr=r"r"r% do_selectsrAcOst||||dddS)aFilters a sequence of objects by applying a test to each object, and rejecting the objects with the test succeeding. If no test is specified, each object will be evaluated as a boolean. Example usage: .. sourcecode:: jinja {{ numbers|reject("odd") }} Similar to a generator comprehension such as: .. code-block:: python (n for n in numbers if not test_odd(n)) .. versionadded:: 2.7 cSs| Sr!r"r'r"r"r%r9r:z sync_do_reject..Fr;r=r"r"r%sync_do_rejectsrBcst||||dddS)NcSs| Sr!r"r'r"r"r%r9r:zdo_reject..Fr?r=r"r"r% do_rejectsrCcOst||||dddS)aWFilters a sequence of objects by applying a test to the specified attribute of each object, and only selecting the objects with the test succeeding. If no test is specified, the attribute's value will be evaluated as a boolean. Example usage: .. sourcecode:: jinja {{ users|selectattr("is_active") }} {{ users|selectattr("email", "none") }} Similar to a generator comprehension such as: .. code-block:: python (u for user in users if user.is_active) (u for user in users if test_none(user.email)) .. versionadded:: 2.7 cSs|Sr!r"r'r"r"r%r9<r:z$sync_do_selectattr..Tr;r=r"r"r%sync_do_selectattr!srDcst||||dddS)NcSs|Sr!r"r'r"r"r%r9Fr:zdo_selectattr..Tr?r=r"r"r% do_selectattr?srEcOst||||dddS)aFFilters a sequence of objects by applying a test to the specified attribute of each object, and rejecting the objects with the test succeeding. If no test is specified, the attribute's value will be evaluated as a boolean. .. sourcecode:: jinja {{ users|rejectattr("is_active") }} {{ users|rejectattr("email", "none") }} Similar to a generator comprehension such as: .. code-block:: python (u for user in users if not user.is_active) (u for user in users if not test_none(user.email)) .. versionadded:: 2.7 cSs| Sr!r"r'r"r"r%r9br:z$sync_do_rejectattr..Tr;r=r"r"r%sync_do_rejectattrIsrFcst||||dddS)NcSs| Sr!r"r'r"r"r%r9lr:zdo_rejectattr..Tr?r=r"r"r% do_rejectattresrG)rkr:indentr cCsD|jj}|d}|d}|dk r0|}||d<t|fd|i|S)aSerialize an object to a string of JSON, and mark it safe to render in HTML. This filter is only for use in HTML documents. The returned string is safe to render in HTML documents and ``