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freddrakefreddrake
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Converted some {tabular}s to use {tablei*} environments.
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‎Doc/ref/ref2.tex‎

Lines changed: 22 additions & 34 deletions
Original file line numberDiff line numberDiff line change
@@ -1,4 +1,4 @@
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\chapter{Lexical analysis}
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\chapter{Lexical analysis\label{lexical}}
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A Python program is read by a \emph{parser}. Input to the parser is a
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stream of \emph{tokens}, generated by the \emph{lexical analyzer}. This
@@ -33,7 +33,7 @@ \section{Line structure}
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A Python program is divided into a number of \emph{logical lines}.
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\index{line structure}
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\subsection{Logical Lines}
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\subsection{Logical lines}
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The end of
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a logical line is represented by the token NEWLINE. Statements cannot
@@ -259,17 +259,11 @@ \subsection{Reserved classes of identifiers}
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Certain classes of identifiers (besides keywords) have special
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meanings. These are:
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\begin{center}
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\begin{tabular}{|l|l|}
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\hline
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Form & Meaning \\
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\hline
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\code{_*} & Not imported by \code{from \var{module} import *} \\
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\code{__*__} & System-defined name \\
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\code{__*} & Class-private name mangling \\
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\hline
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\end{tabular}
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\end{center}
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\begin{tableii}{l|l}{code}{Form}{Meaning}
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\lineii{_*}{Not imported by \samp{from \var{module} import *}}
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\lineii{__*__}{System-defined name}
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\lineii{__*}{Class-private name mangling}
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\end{tableii}
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(XXX need section references here.)
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@@ -322,27 +316,21 @@ \subsection{String literals}
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\index{Standard C}
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\index{C}
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\begin{center}
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\begin{tabular}{|l|l|}
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\hline
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Escape Sequence & Meaning \\
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\hline
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\code{\e}\emph{newline} & Ignored \\
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\code{\e\e} & Backslash (\code{\e}) \\
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\code{\e'} & Single quote (\code{'}) \\
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\code{\e"} & Double quote (\code{"}) \\
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\code{\e a} & \ASCII{} Bell (BEL) \\
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\code{\e b} & \ASCII{} Backspace (BS) \\
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\code{\e f} & \ASCII{} Formfeed (FF) \\
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\code{\e n} & \ASCII{} Linefeed (LF) \\
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\code{\e r} & \ASCII{} Carriage Return (CR) \\
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\code{\e t} & \ASCII{} Horizontal Tab (TAB) \\
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\code{\e v} & \ASCII{} Vertical Tab (VT) \\
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\code{\e}\emph{ooo} & \ASCII{} character with octal value \emph{ooo} \\
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\code{\e x}\emph{hh...} & \ASCII{} character with hex value \emph{hh...} \\
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\hline
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\end{tabular}
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\end{center}
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\begin{tableii}{l|l}{code}{Escape Sequence}{Meaning}
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\lineii{\e\var{newline}} {Ignored}
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\lineii{\e\e} {Backslash (\code{\e})}
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\lineii{\e'} {Single quote (\code{'})}
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\lineii{\e"} {Double quote (\code{"})}
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\lineii{\e a} {\ASCII{} Bell (BEL)}
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\lineii{\e b} {\ASCII{} Backspace (BS)}
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\lineii{\e f} {\ASCII{} Formfeed (FF)}
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\lineii{\e n} {\ASCII{} Linefeed (LF)}
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\lineii{\e r} {\ASCII{} Carriage Return (CR)}
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\lineii{\e t} {\ASCII{} Horizontal Tab (TAB)}
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\lineii{\e v} {\ASCII{} Vertical Tab (VT)}
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\lineii{\e\var{ooo}} {\ASCII{} character with octal value \emph{ooo}}
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\lineii{\e x\var{hh...}} {\ASCII{} character with hex value \emph{hh...}}
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\end{tableii}
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\index{ASCII@\ASCII{}}
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In strict compatibility with Standard \C, up to three octal digits are

‎Doc/ref/ref4.tex‎

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Original file line numberDiff line numberDiff line change
@@ -1,12 +1,12 @@
1-
\chapter{Execution model}
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\chapter{Execution model\label{execmodel}}
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\index{execution model}
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\section{Code blocks, execution frames, and namespaces} \label{execframes}
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\index{code block}
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\indexii{execution}{frame}
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\index{namespace}
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9-
A {\em code block} is a piece of Python program text that can be
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A \dfn{code block} is a piece of Python program text that can be
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executed as a unit, such as a module, a class definition or a function
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body. Some code blocks (like modules) are normally executed only once, others
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(like function bodies) may be executed many times. Code blocks may
@@ -29,28 +29,28 @@ \section{Code blocks, execution frames, and namespaces} \label{execframes}
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read and evaluated by the built-in function \function{input()} is a
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code block.
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A code block is executed in an execution frame. An {\em execution
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A code block is executed in an execution frame. An \dfn{execution
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frame} contains some administrative information (used for debugging),
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determines where and how execution continues after the code block's
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execution has completed, and (perhaps most importantly) defines two
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namespaces, the local and the global namespace, that affect
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execution of the code block.
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\indexii{execution}{frame}
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40-
A {\em namespace} is a mapping from names (identifiers) to objects.
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A \dfn{namespace} is a mapping from names (identifiers) to objects.
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A particular namespace may be referenced by more than one execution
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frame, and from other places as well. Adding a name to a namespace
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is called {\em binding} a name (to an object); changing the mapping of
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a name is called {\em rebinding}; removing a name is {\em unbinding}.
43+
is called \dfn{binding} a name (to an object); changing the mapping of
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a name is called \dfn{rebinding}; removing a name is \dfn{unbinding}.
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Namespaces are functionally equivalent to dictionaries (and often
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implemented as dictionaries).
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\index{namespace}
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\indexii{binding}{name}
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\indexii{rebinding}{name}
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\indexii{unbinding}{name}
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The {\em local namespace} of an execution frame determines the default
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place where names are defined and searched. The {\em global
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The \dfn{local namespace} of an execution frame determines the default
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place where names are defined and searched. The \dfn{global
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namespace} determines the place where names listed in \keyword{global}
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statements are defined and searched, and where names that are not
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bound anywhere in the current code block are searched.
@@ -105,36 +105,43 @@ \section{Code blocks, execution frames, and namespaces} \label{execframes}
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the global namespace is the namespace of the containing module ---
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scopes in Python do not nest!
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\begin{center}
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\begin{tabular}{|l|l|l|l|}
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\hline
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Code block type & Global namespace & Local namespace & Notes \\
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\hline
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Module & n.s. for this module & same as global & \\
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Script (file or command) & n.s. for \module{__main__} & same as global
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& (1) \\
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Interactive command & n.s. for \module{__main__} & same as global & \\
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Class definition & global n.s. of containing block & new n.s. & \\
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Function body & global n.s. of containing block & new n.s. & (2) \\
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String passed to \keyword{exec} statement
120-
& global n.s. of containing block
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& local n.s. of containing block & (2), (3) \\
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String passed to \function{eval()}
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& global n.s. of caller & local n.s. of caller & (2), (3) \\
124-
File read by \function{execfile()}
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& global n.s. of caller & local n.s. of caller & (2), (3) \\
126-
Expression read by \function{input()}
127-
& global n.s. of caller & local n.s. of caller & \\
128-
\hline
129-
\end{tabular}
130-
\end{center}
108+
\begin{tableiv}{l|l|l|l}{textrm}%
109+
{Code block type}{Global namespace}{Local namespace}{Notes}
110+
\lineiv{Module}%
111+
{n.s. for this module}%
112+
{same as global}{}
113+
\lineiv{Script (file or command)}%
114+
{n.s. for \module{__main__}}%
115+
{same as global}{(1)}
116+
\lineiv{Interactive command}%
117+
{n.s. for \module{__main__}}%
118+
{same as global}{}
119+
\lineiv{Class definition}%
120+
{global n.s. of containing block}%
121+
{new n.s.}{}
122+
\lineiv{Function body}%
123+
{global n.s. of containing block}%
124+
{new n.s.}{(2)}
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\lineiv{String passed to \keyword{exec} statement}%
126+
{global n.s. of containing block}%
127+
{local n.s. of containing block}{(2), (3)}
128+
\lineiv{String passed to \function{eval()}}%
129+
{global n.s. of caller}%
130+
{local n.s. of caller}{(2), (3)}
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\lineiv{File read by \function{execfile()}}%
132+
{global n.s. of caller}%
133+
{local n.s. of caller}{(2), (3)}
134+
\lineiv{Expression read by \function{input()}}%
135+
{global n.s. of caller}%
136+
{local n.s. of caller}{}
137+
\end{tableiv}
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\refbimodindex{__main__}
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133140
Notes:
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135142
\begin{description}
136143

137-
\item[n.s.] means {\em namespace}
144+
\item[n.s.] means \emph{namespace}
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139146
\item[(1)] The main module for a script is always called
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\module{__main__}; ``the filename don't enter into it.''
@@ -154,16 +161,16 @@ \section{Code blocks, execution frames, and namespaces} \label{execframes}
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respectively. The effect of modifications to this dictionary on the
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namespace are undefined.%
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\footnote{The current implementations return the dictionary actually
157-
used to implement the namespace, {\em except} for functions, where
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used to implement the namespace, \emph{except} for functions, where
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the optimizer may cause the local namespace to be implemented
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differently, and \function{locals()} returns a read-only dictionary.}
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\section{Exceptions}
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Exceptions are a means of breaking out of the normal flow of control
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of a code block in order to handle errors or other exceptional
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conditions. An exception is {\em raised} at the point where the error
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is detected; it may be {\em handled} by the surrounding code block or
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conditions. An exception is \emph{raised} at the point where the error
173+
is detected; it may be \emph{handled} by the surrounding code block or
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by any code block that directly or indirectly invoked the code block
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where the error occurred.
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\index{exception}

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