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<?xml version='1.0'?>
<!--
SPDX-FileCopyrightText: Copyright The SCons Foundation (https://scons.org)
SPDX-License-Identifier: MIT
-->
<!DOCTYPE sconsdoc [
<!ENTITY % scons SYSTEM "../scons.mod">
%scons;
<!ENTITY % builders-mod SYSTEM "../generated/builders.mod">
%builders-mod;
<!ENTITY % functions-mod SYSTEM "../generated/functions.mod">
%functions-mod;
<!ENTITY % tools-mod SYSTEM "../generated/tools.mod">
%tools-mod;
<!ENTITY % variables-mod SYSTEM "../generated/variables.mod">
%variables-mod;
]>
<appendix id="app-python"
xmlns="http://www.scons.org/dbxsd/v1.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.scons.org/dbxsd/v1.0 http://www.scons.org/dbxsd/v1.0/scons.xsd">
<title>Python overview</title>
<para>
This section will provide a brief overview of
the Python programming language.
Skip this section if you are already familiar with Python
(or you're really intent on diving into &SCons;
and just picking up things as you go).
</para>
<para>
Python has a lot of good
documentation freely available on-line
to help you get started.
The standard tutorial is available at XXX.
</para>
<para>
Python is very easy to pick up.
</para>
<para>
Python variables must be assigned to before they can be referenced.
</para>
<para>
Assignment is like most programming languages:
x = 1 + 2
z = 3 * x
</para>
<para>
Function calls look like most language function calls:
a = f(g)
</para>
<para>
Define functions like so:
def func(arg1, arg2):
return arg1 * arg 2
The number of parameters
</para>
<para>
Strings can be enclosed in single quotes or double quotes,
backslashes are used to escape characters,
triple-quote syntax lets you include quotes and newlines,
raw strings begin with 'r'.
</para>
<para>
Lists are enclosed in square brackets,
list items are separated by commas.
List references use square brackets and integer index values,
slice notation lets you select, delete or replace a range.
</para>
<para>
Dictionaries (hashes) are enclosed in curly brackets,
: separates keys from values,
, separates items.
Dictionary values are referenced using square brackets.
</para>
<para>
Access class attributes (including methods) using a '.'.
</para>
<para>
if: statements look like
elif: statements look like
else: statements look like
</para>
<para>
for: statements look like
while: statements look like
break statements look like
continue statements look like
</para>
<para>
pass
</para>
</appendix>
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