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author Guido van Rossum <guido@python.org>
date Thu, 17 Jul 1997 16:29:42 +0000
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1 \section{Standard Modules \sectcode{UserDict} and \sectcode{UserList}}
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2 Each of these modules defines a class that acts as a wrapper around
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3 either dictionary or list objects. They're useful base classes for
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4 your own dictionary-like or list-like classes, which can inherit from
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5 them and override existing methods or add new ones. In this way one
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6 can add new behaviours to dictionaries or lists.
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7
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8 \renewcommand{\indexsubitem}{(in module UserDict)}
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9 The \code{UserDict} module defines the \code{UserDict} class:
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10
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11 \begin{funcdesc}{UserDict}{}
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12 Return a class instance that simulates a dictionary. The instance's
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13 contents are kept in a regular dictionary, which is accessible via the
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14 \code{data} attribute of \code{UserDict} instances.
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15 \end{funcdesc}
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16
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17 \renewcommand{\indexsubitem}{(in module UserList)}
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18 The \code{UserList} module defines the \code{UserList} class:
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19
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20 \begin{funcdesc}{UserList}{\optional{list}}
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21 Return a class instance that simulates a list. The instance's
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22 contents are kept in a regular list, which is accessible via the
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23 \code{data} attribute of \code{UserList} instances. The instance's
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24 contents are initially set to c copy of \var{list}, defaulting to the
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25 empty list \code{[]}. \var{list} can be either a regular Python list,
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26 or an instance of \code{UserList} (or a subclass).
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27 \end{funcdesc}