Cleanup a few minor things.
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@ -225,7 +225,7 @@ 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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@ -757,7 +757,7 @@ 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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@ -782,7 +782,7 @@ 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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