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Changed references to /usr/local into /usr/local/bin. 

Documented $PYTHONSTARTUP
This commit is contained in:
Guido van Rossum 1992-09-03 21:27:55 +00:00
parent 2dff991f6b
commit 9a4e3fc56a
2 changed files with 62 additions and 18 deletions
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40
Doc/tut.tex
View File

@ -147,8 +147,8 @@ modules that can save you a lot of time when writing Python programs.
\section{Invoking the Interpreter}
The Python interpreter is usually installed as {\tt /usr/local/python}
on those machines where it is available; putting {\tt /usr/local} in
The Python interpreter is usually installed as {\tt /usr/local/bin/python}
on those machines where it is available; putting {\tt /usr/local/bin} in
your {\UNIX} shell's search path makes it possible to start it by
typing the command
@ -159,7 +159,7 @@ python
to the shell. Since the choice of the directory where the interpreter
lives is an installation option, other places are possible; check with
your local Python guru or system administrator. (E.g., {\tt
/usr/local/bin/python} is a popular alternative location.)
/usr/local/python} is a popular alternative location.)
The interpreter operates somewhat like the {\UNIX} shell: when called
with standard input connected to a tty device, it reads and executes
@ -211,7 +211,7 @@ and a copyright notice before printing the first prompt, e.g.:
\bcode\begin{verbatim}
python
Python 0.9.5 (Jan 2 1992).
Python 0.9.7 (Aug 28 1992).
Copyright 1990, 1991, 1992 Stichting Mathematisch Centrum, Amsterdam
>>>
\end{verbatim}\ecode
@ -248,12 +248,12 @@ When a module named {\tt foo} is imported, the interpreter searches
for a file named {\tt foo.py} in the list of directories specified by
the environment variable {\tt PYTHONPATH}. It has the same syntax as
the {\UNIX} shell variable {\tt PATH}, i.e., a list of colon-separated
directory names. When {\tt PYTHONPATH} is not set, an
installation-dependent default path is used, usually {\tt
.:/usr/local/lib/python}.
directory names. When {\tt PYTHONPATH} is not set, or when the file
is not found there, the search continues in an installation-dependent
default path, usually {\tt .:/usr/local/lib/python}.
Actually, modules are searched in the list of directories given by the
variable {\tt sys.path} which is initialized from {\tt PYTHONPATH} or
variable {\tt sys.path} which is initialized from {\tt PYTHONPATH} and
the installation-dependent default. This allows Python programs that
know what they're doing to modify or replace the module search path.
See the section on Standard Modules later.
@ -280,13 +280,35 @@ On BSD'ish {\UNIX} systems, Python scripts can be made directly
executable, like shell scripts, by putting the line
\bcode\begin{verbatim}
#! /usr/local/python
#! /usr/local/bin/python
\end{verbatim}\ecode
%
(assuming that's the name of the interpreter) at the beginning of the
script and giving the file an executable mode. The {\tt \#!} must be
the first two characters of the file.
\subsection{The Interactive Startup File}
When you use Python interactively, it is frequently handy to have some
standard commands executed every time the interpreter is started. You
can do this by setting an environment variable named {\tt
PYTHONSTARTUP} to the name of a file containing your start-up
commands. This is similar to the {\tt /profile} feature of the UNIX
shells.
This file is only read in interactive sessions, not when Python reads
commands from a script, and not when {\tt /dev/tty} is given as the
explicit source of commands (which otherwise behaves like an
interactive session). It is executed in the same name space where
interactive commands are executed, so that objects that it defines or
imports can be used without qualification in the interactive session.
If you want to read an additional start-up file from the current
directory, you can program this in the global start-up file, e.g.
\verb\execfile('.pythonrc')\. If you want to use the startup file
in a script, you must write this explicitly in the script, e.g.
\verb\import os;\ \verb\execfile(os.environ['PYTHONSTARTUP'])\.
\section{Interactive Input Editing and History Substitution}
Some versions of the Python interpreter support editing of the current

40
Doc/tut/tut.tex
View File

@ -147,8 +147,8 @@ modules that can save you a lot of time when writing Python programs.
\section{Invoking the Interpreter}
The Python interpreter is usually installed as {\tt /usr/local/python}
on those machines where it is available; putting {\tt /usr/local} in
The Python interpreter is usually installed as {\tt /usr/local/bin/python}
on those machines where it is available; putting {\tt /usr/local/bin} in
your {\UNIX} shell's search path makes it possible to start it by
typing the command
@ -159,7 +159,7 @@ python
to the shell. Since the choice of the directory where the interpreter
lives is an installation option, other places are possible; check with
your local Python guru or system administrator. (E.g., {\tt
/usr/local/bin/python} is a popular alternative location.)
/usr/local/python} is a popular alternative location.)
The interpreter operates somewhat like the {\UNIX} shell: when called
with standard input connected to a tty device, it reads and executes
@ -211,7 +211,7 @@ and a copyright notice before printing the first prompt, e.g.:
\bcode\begin{verbatim}
python
Python 0.9.5 (Jan 2 1992).
Python 0.9.7 (Aug 28 1992).
Copyright 1990, 1991, 1992 Stichting Mathematisch Centrum, Amsterdam
>>>
\end{verbatim}\ecode
@ -248,12 +248,12 @@ When a module named {\tt foo} is imported, the interpreter searches
for a file named {\tt foo.py} in the list of directories specified by
the environment variable {\tt PYTHONPATH}. It has the same syntax as
the {\UNIX} shell variable {\tt PATH}, i.e., a list of colon-separated
directory names. When {\tt PYTHONPATH} is not set, an
installation-dependent default path is used, usually {\tt
.:/usr/local/lib/python}.
directory names. When {\tt PYTHONPATH} is not set, or when the file
is not found there, the search continues in an installation-dependent
default path, usually {\tt .:/usr/local/lib/python}.
Actually, modules are searched in the list of directories given by the
variable {\tt sys.path} which is initialized from {\tt PYTHONPATH} or
variable {\tt sys.path} which is initialized from {\tt PYTHONPATH} and
the installation-dependent default. This allows Python programs that
know what they're doing to modify or replace the module search path.
See the section on Standard Modules later.
@ -280,13 +280,35 @@ On BSD'ish {\UNIX} systems, Python scripts can be made directly
executable, like shell scripts, by putting the line
\bcode\begin{verbatim}
#! /usr/local/python
#! /usr/local/bin/python
\end{verbatim}\ecode
%
(assuming that's the name of the interpreter) at the beginning of the
script and giving the file an executable mode. The {\tt \#!} must be
the first two characters of the file.
\subsection{The Interactive Startup File}
When you use Python interactively, it is frequently handy to have some
standard commands executed every time the interpreter is started. You
can do this by setting an environment variable named {\tt
PYTHONSTARTUP} to the name of a file containing your start-up
commands. This is similar to the {\tt /profile} feature of the UNIX
shells.
This file is only read in interactive sessions, not when Python reads
commands from a script, and not when {\tt /dev/tty} is given as the
explicit source of commands (which otherwise behaves like an
interactive session). It is executed in the same name space where
interactive commands are executed, so that objects that it defines or
imports can be used without qualification in the interactive session.
If you want to read an additional start-up file from the current
directory, you can program this in the global start-up file, e.g.
\verb\execfile('.pythonrc')\. If you want to use the startup file
in a script, you must write this explicitly in the script, e.g.
\verb\import os;\ \verb\execfile(os.environ['PYTHONSTARTUP'])\.
\section{Interactive Input Editing and History Substitution}
Some versions of the Python interpreter support editing of the current