[issue25535] collections.Counter methods return Counter objects instead of subclass objects

[Raymond Hettinger]

Raymond Hettinger added the comment:

The decision was deliberate and matches what we've done elsewhere in Python.   The nearest kin to Counters are sets/frozensets which also behave the same way:

    >>> class S(set):
            pass
    >>> type(S('abc') | S('cdef'))
    <class 'set'>

Mark Dickinson articulated the reasons clearly.   Python has been consistent about this decision from the outset (see array.array or fractions.Fraction for example).

Marking this as "not a bug" and closing.

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resolution:  -> not a bug
status: open -> closed

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue25535>
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