Fix SF #642742, property() builtin not documented
Added doc for functions new to 2.2: classmethod property staticmethod super Taken from docstrings. Could use review. Hope there wasn't a reason why these shouldn't have been added. Backport candidate.
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@ -85,6 +85,7 @@ def my_import(name):
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subclassed further. Its only instances are \code{False} and
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\code{True}.
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\indexii{Boolean}{type}
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\versionadded{2.2.1}
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\end{funcdesc}
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\begin{funcdesc}{buffer}{object\optional{, offset\optional{, size}}}
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@ -114,6 +115,29 @@ def my_import(name):
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if \var{i} is outside that range.
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\end{funcdesc}
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\begin{funcdesc}{classmethod}{function}
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Return a class method for \var{function}.
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A class method receives the class as implicit first argument,
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just like an instance method receives the instance.
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To declare a class method, use this idiom:
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\begin{verbatim}
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class C:
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def f(cls, arg1, arg2, ...): ...
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f = classmethod(f)
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\end{verbatim}
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It can be called either on the class (e.g. C.f()) or on an instance
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(e.g. C().f()). The instance is ignored except for its class.
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If a class method is called for a derived class, the derived class
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object is passed as the implied first argument.
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Class methods are different than C++ or Java static methods.
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If you want those, see \ref{staticmethod}.
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\versionadded{2.2}
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\end{funcdesc}
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\begin{funcdesc}{cmp}{x, y}
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Compare the two objects \var{x} and \var{y} and return an integer
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according to the outcome. The return value is negative if \code{\var{x}
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@ -679,6 +703,25 @@ def my_import(name):
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rounding accidents.)
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\end{funcdesc}
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\begin{funcdesc}{property}{\optional{fget\optional{, fset\optional{, fdel\optional{, doc}}}}}
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Return a property attribute for new-style classes (classes that
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derive from \function{object}.
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\var{fget} is a function for getting an attribute value, likewise
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\var{fset} is a function for setting, and \var{fdel} a function
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for del'ing, an attribute. Typical use is to define a managed attribute x:
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\begin{verbatim}
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class C(object):
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def getx(self): return self.__x
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def setx(self, value): self.__x = value
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def delx(self): del self.__x
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x = property(getx, setx, delx, "I'm the 'x' property.")
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\end{verbatim}
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\versionadded{2.2}
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\end{funcdesc}
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\begin{funcdesc}{range}{\optional{start,} stop\optional{, step}}
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This is a versatile function to create lists containing arithmetic
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progressions. It is most often used in \keyword{for} loops. The
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@ -826,6 +869,41 @@ def my_import(name):
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\samp{a[start:stop, i]}.
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\end{funcdesc}
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\begin{funcdesc}{staticmethod}{function}
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Return a static method for \var{function}.
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A static method does not receive an implicit first argument.
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To declare a static method, use this idiom:
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\begin{verbatim}
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class C:
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def f(arg1, arg2, ...): ...
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f = staticmethod(f)
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\end{verbatim}
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It can be called either on the class (e.g. C.f()) or on an instance
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(e.g. C().f()). The instance is ignored except for its class.
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Static methods in Python are similar to those found in Java or C++.
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For a more advanced concept, see \ref{classmethod}.
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\versionadded{2.2}
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\end{funcdesc}
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\begin{funcdesc}{super}{type\optional{object-or-type}}
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Return the superclass of \var{type}. If the second argument is omitted
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the super object returned is unbound. If the second argument is an
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object, isinstance(obj, type) must be true. If the second argument is a
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type, issubclass(type2, type) must be true.
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A typical use for calling a cooperative superclass method is:
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\begin{verbatim}
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class C(B):
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def meth(self, arg):
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super(C, self).meth(arg)
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\end{verbatim}
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\versionadded{2.2}
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\end{funcdesc}
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\begin{funcdesc}{str}{object}
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Return a string containing a nicely printable representation of an
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object. For strings, this returns the string itself. The
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