#16862: merge with 3.2.
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9f6a239cf1
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@ -214,7 +214,7 @@ The major reason is history. Functions were used for those operations that were
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generic for a group of types and which were intended to work even for objects
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that didn't have methods at all (e.g. tuples). It is also convenient to have a
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function that can readily be applied to an amorphous collection of objects when
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you use the functional features of Python (``map()``, ``apply()`` et al).
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you use the functional features of Python (``map()``, ``zip()`` et al).
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In fact, implementing ``len()``, ``max()``, ``min()`` as a built-in function is
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actually less code than implementing them as methods for each type. One can
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@ -345,9 +345,6 @@ support for C.
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Answer 2: Fortunately, there is `Stackless Python <http://www.stackless.com>`_,
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which has a completely redesigned interpreter loop that avoids the C stack.
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It's still experimental but looks very promising. Although it is binary
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compatible with standard Python, it's still unclear whether Stackless will make
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it into the core -- maybe it's just too revolutionary.
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Why can't lambda forms contain statements?
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@ -709,7 +706,7 @@ of each call to the function, and return the cached value if the same value is
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requested again. This is called "memoizing", and can be implemented like this::
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# Callers will never provide a third parameter for this function.
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def expensive (arg1, arg2, _cache={}):
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def expensive(arg1, arg2, _cache={}):
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if (arg1, arg2) in _cache:
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return _cache[(arg1, arg2)]
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@ -734,7 +731,7 @@ languages. For example::
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try:
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...
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if (condition): raise label() # goto label
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if condition: raise label() # goto label
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...
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except label: # where to goto
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pass
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