Python jinja2._compat 模块，imap() 实例源码

def do_sum(environment, iterable, attribute=None, start=0):
    """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.
    """
    if attribute is not None:
        iterable = imap(make_attrgetter(environment, attribute), iterable)
    return sum(iterable, start)

def do_sum(environment, iterable, attribute=None, start=0):
    """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.
    """
    if attribute is not None:
        iterable = imap(make_attrgetter(environment, attribute), iterable)
    return sum(iterable, start)

def do_sum(environment, iterable, attribute=None, start=0):
    """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.
    """
    if attribute is not None:
        iterable = imap(make_attrgetter(environment, attribute), iterable)
    return sum(iterable, start)

def do_sum(environment, iterable, attribute=None, start=0):
    """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.
    """
    if attribute is not None:
        iterable = imap(make_attrgetter(environment, attribute), iterable)
    return sum(iterable, start)

def do_sum(environment, iterable, attribute=None, start=0):
    """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.
    """
    if attribute is not None:
        iterable = imap(make_attrgetter(environment, attribute), iterable)
    return sum(iterable, start)

def do_sum(environment, iterable, attribute=None, start=0):
    """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.
    """
    if attribute is not None:
        iterable = imap(make_attrgetter(environment, attribute), iterable)
    return sum(iterable, start)

def do_sum(environment, iterable, attribute=None, start=0):
    """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.
    """
    if attribute is not None:
        iterable = imap(make_attrgetter(environment, attribute), iterable)
    return sum(iterable, start)

def do_sum(environment, iterable, attribute=None, start=0):
    """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.
    """
    if attribute is not None:
        iterable = imap(make_attrgetter(environment, attribute), iterable)
    return sum(iterable, start)

def do_sum(environment, iterable, attribute=None, start=0):
    """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.
    """
    if attribute is not None:
        iterable = imap(make_attrgetter(environment, attribute), iterable)
    return sum(iterable, start)

def do_sum(environment, iterable, attribute=None, start=0):
    """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.
    """
    if attribute is not None:
        iterable = imap(make_attrgetter(environment, attribute), iterable)
    return sum(iterable, start)

def do_sum(environment, iterable, attribute=None, start=0):
    """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.
    """
    if attribute is not None:
        iterable = imap(make_attrgetter(environment, attribute), iterable)
    return sum(iterable, start)

def do_sum(environment, iterable, attribute=None, start=0):
    """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.
    """
    if attribute is not None:
        iterable = imap(make_attrgetter(environment, attribute), iterable)
    return sum(iterable, start)

def do_sum(environment, iterable, attribute=None, start=0):
    """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.
    """
    if attribute is not None:
        iterable = imap(make_attrgetter(environment, attribute), iterable)
    return sum(iterable, start)

def do_sum(environment, iterable, attribute=None, start=0):
    """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.
    """
    if attribute is not None:
        iterable = imap(make_attrgetter(environment, attribute), iterable)
    return sum(iterable, start)

def do_sum(environment, iterable, attribute=None, start=0):
    """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.
    """
    if attribute is not None:
        iterable = imap(make_attrgetter(environment, attribute), iterable)
    return sum(iterable, start)

def do_sum(environment, iterable, attribute=None, start=0):
    """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.
    """
    if attribute is not None:
        iterable = imap(make_attrgetter(environment, attribute), iterable)
    return sum(iterable, start)

def do_sum(environment, iterable, attribute=None, start=0):
    """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.
    """
    if attribute is not None:
        iterable = imap(make_attrgetter(environment, attribute), iterable)
    return sum(iterable, start)

def do_sum(environment, iterable, attribute=None, start=0):
    """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.
    """
    if attribute is not None:
        iterable = imap(make_attrgetter(environment, attribute), iterable)
    return sum(iterable, start)

def do_sum(environment, iterable, attribute=None, start=0):
    """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.
    """
    if attribute is not None:
        iterable = imap(make_attrgetter(environment, attribute), iterable)
    return sum(iterable, start)

def do_sum(environment, iterable, attribute=None, start=0):
    """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.
    """
    if attribute is not None:
        iterable = imap(make_attrgetter(environment, attribute), iterable)
    return sum(iterable, start)

def do_sum(environment, iterable, attribute=None, start=0):
    """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.
    """
    if attribute is not None:
        iterable = imap(make_attrgetter(environment, attribute), iterable)
    return sum(iterable, start)

def do_sum(environment, iterable, attribute=None, start=0):
    """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.
    """
    if attribute is not None:
        iterable = imap(make_attrgetter(environment, attribute), iterable)
    return sum(iterable, start)

def do_sum(environment, iterable, attribute=None, start=0):
    """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.
    """
    if attribute is not None:
        iterable = imap(make_attrgetter(environment, attribute), iterable)
    return sum(iterable, start)

def do_sum(environment, iterable, attribute=None, start=0):
    """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.
    """
    if attribute is not None:
        iterable = imap(make_attrgetter(environment, attribute), iterable)
    return sum(iterable, start)

def do_sum(environment, iterable, attribute=None, start=0):
    """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.
    """
    if attribute is not None:
        iterable = imap(make_attrgetter(environment, attribute), iterable)
    return sum(iterable, start)

def do_sum(environment, iterable, attribute=None, start=0):
    """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.
    """
    if attribute is not None:
        iterable = imap(make_attrgetter(environment, attribute), iterable)
    return sum(iterable, start)

def do_sum(environment, iterable, attribute=None, start=0):
    """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.
    """
    if attribute is not None:
        iterable = imap(make_attrgetter(environment, attribute), iterable)
    return sum(iterable, start)

def do_sum(environment, iterable, attribute=None, start=0):
    """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.
    """
    if attribute is not None:
        iterable = imap(make_attrgetter(environment, attribute), iterable)
    return sum(iterable, start)

def do_sum(environment, iterable, attribute=None, start=0):
    """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.
    """
    if attribute is not None:
        iterable = imap(make_attrgetter(environment, attribute), iterable)
    return sum(iterable, start)

def do_sum(environment, iterable, attribute=None, start=0):
    """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.
    """
    if attribute is not None:
        iterable = imap(make_attrgetter(environment, attribute), iterable)
    return sum(iterable, start)

def do_sum(environment, iterable, attribute=None, start=0):
    """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.
    """
    if attribute is not None:
        iterable = imap(make_attrgetter(environment, attribute), iterable)
    return sum(iterable, start)

def do_sum(environment, iterable, attribute=None, start=0):
    """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.
    """
    if attribute is not None:
        iterable = imap(make_attrgetter(environment, attribute), iterable)
    return sum(iterable, start)

def do_sum(environment, iterable, attribute=None, start=0):
    """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.
    """
    if attribute is not None:
        iterable = imap(make_attrgetter(environment, attribute), iterable)
    return sum(iterable, start)

def do_sum(environment, iterable, attribute=None, start=0):
    """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.
    """
    if attribute is not None:
        iterable = imap(make_attrgetter(environment, attribute), iterable)
    return sum(iterable, start)

def do_sum(environment, iterable, attribute=None, start=0):
    """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.
    """
    if attribute is not None:
        iterable = imap(make_attrgetter(environment, attribute), iterable)
    return sum(iterable, start)

def do_sum(environment, iterable, attribute=None, start=0):
    """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.
    """
    if attribute is not None:
        iterable = imap(make_attrgetter(environment, attribute), iterable)
    return sum(iterable, start)

def do_sum(environment, iterable, attribute=None, start=0):
    """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.
    """
    if attribute is not None:
        iterable = imap(make_attrgetter(environment, attribute), iterable)
    return sum(iterable, start)

def do_sum(environment, iterable, attribute=None, start=0):
    """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.
    """
    if attribute is not None:
        iterable = imap(make_attrgetter(environment, attribute), iterable)
    return sum(iterable, start)

def do_sum(environment, iterable, attribute=None, start=0):
    """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.
    """
    if attribute is not None:
        iterable = imap(make_attrgetter(environment, attribute), iterable)
    return sum(iterable, start)

def do_sum(environment, iterable, attribute=None, start=0):
    """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.
    """
    if attribute is not None:
        iterable = imap(make_attrgetter(environment, attribute), iterable)
    return sum(iterable, start)

def do_sum(environment, iterable, attribute=None, start=0):
    """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.
    """
    if attribute is not None:
        iterable = imap(make_attrgetter(environment, attribute), iterable)
    return sum(iterable, start)

def do_sum(environment, iterable, attribute=None, start=0):
    """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.
    """
    if attribute is not None:
        iterable = imap(make_attrgetter(environment, attribute), iterable)
    return sum(iterable, start)

def do_sum(environment, iterable, attribute=None, start=0):
    """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.
    """
    if attribute is not None:
        iterable = imap(make_attrgetter(environment, attribute), iterable)
    return sum(iterable, start)

def do_sum(environment, iterable, attribute=None, start=0):
    """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.
    """
    if attribute is not None:
        iterable = imap(make_attrgetter(environment, attribute), iterable)
    return sum(iterable, start)

def do_sum(environment, iterable, attribute=None, start=0):
    """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.
    """
    if attribute is not None:
        iterable = imap(make_attrgetter(environment, attribute), iterable)
    return sum(iterable, start)

def do_sum(environment, iterable, attribute=None, start=0):
    """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.
    """
    if attribute is not None:
        iterable = imap(make_attrgetter(environment, attribute), iterable)
    return sum(iterable, start)

def do_sum(environment, iterable, attribute=None, start=0):
    """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.
    """
    if attribute is not None:
        iterable = imap(make_attrgetter(environment, attribute), iterable)
    return sum(iterable, start)

def do_sum(environment, iterable, attribute=None, start=0):
    """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.
    """
    if attribute is not None:
        iterable = imap(make_attrgetter(environment, attribute), iterable)
    return sum(iterable, start)

def do_sum(environment, iterable, attribute=None, start=0):
    """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.
    """
    if attribute is not None:
        iterable = imap(make_attrgetter(environment, attribute), iterable)
    return sum(iterable, start)

def _fail_ut_eof(self, name, end_token_stack, lineno):
        expected = []
        for exprs in end_token_stack:
            expected.extend(imap(describe_token_expr, exprs))
        if end_token_stack:
            currently_looking = ' or '.join(
                "'%s'" % describe_token_expr(expr)
                for expr in end_token_stack[-1])
        else:
            currently_looking = None

        if name is None:
            message = ['Unexpected end of template.']
        else:
            message = ['Encountered unknown tag \'%s\'.' % name]

        if currently_looking:
            if name is not None and name in expected:
                message.append('You probably made a nesting mistake. Jinja '
                               'is expecting this tag, but currently looking '
                               'for %s.' % currently_looking)
            else:
                message.append('Jinja was looking for the following tags: '
                               '%s.' % currently_looking)

        if self._tag_stack:
            message.append('The innermost block that needs to be '
                           'closed is \'%s\'.' % self._tag_stack[-1])

        self.fail(' '.join(message), lineno)