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Explain that __init__() methods do not get to return values.

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Fred Drake 2001-08-02 15:53:05 +00:00
parent 2b8d7bdd77
commit 044bb4d22a
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17
Doc/ref/ref3.tex
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@ -892,14 +892,15 @@ extracting a slice may not make sense. (One example of this is the
\subsection{Basic customization\label{customization}}
\begin{methoddesc}[object]{__init__}{self\optional{, args...}}
Called when the instance is created. The arguments are those passed
to the class constructor expression. If a base class has an
\method{__init__()} method the derived class's \method{__init__()} method must
explicitly call it to ensure proper initialization of the base class
part of the instance, e.g., \samp{BaseClass.__init__(\var{self},
[\var{args}...])}.
\indexii{class}{constructor}
\begin{methoddesc}[object]{__init__}{self\optional{, \moreargs}}
Called\indexii{class}{constructor} when the instance is created. The
arguments are those passed to the class constructor expression. If a
base class has an \method{__init__()} method the derived class's
\method{__init__()} method must explicitly call it to ensure proper
initialization of the base class part of the instance; for example:
\samp{BaseClass.__init__(\var{self}, [\var{args}...])}. As a special
contraint on constructors, no value may be returned; doing so will
cause a \exception{TypeError} to be raised at runtime.
\end{methoddesc}