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<title>7.1 The if statement
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<H1><A NAME=
"SECTION009100000000000000000"></A><A NAME=
"if"></A>
7.1 The
<tt class=
"keyword">if
</tt> statement
<a id='l2h-
573' xml:id='l2h-
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></a>
The
<tt class=
"keyword">if
</tt> statement is used for conditional execution:
<div class=
"productions">
<td><a id='tok-if_stmt' xml:id='tok-if_stmt'
>if_stmt
</a></td>
<td>"if" <a class='grammartoken'
href=
"Booleans.html#tok-expression">expression
</a> ":" <a class='grammartoken'
href=
"compound.html#tok-suite">suite
</a></td></tr>
<td><code>(
"elif" <a class='grammartoken'
href=
"Booleans.html#tok-expression">expression
</a> ":" <a class='grammartoken'
href=
"compound.html#tok-suite">suite
</a> )*
</code></td></tr>
<td><code>[
"else" ":" <a class='grammartoken'
href=
"compound.html#tok-suite">suite
</a>]
</code></td></tr>
<a class=
"grammar-footer"
href=
"grammar.txt" type=
"text/plain"
>Download entire grammar as text.
</a>
It selects exactly one of the suites by evaluating the expressions one
by one until one is found to be true (see section
<A href=
"Booleans.html#Booleans">5.10</A> for
the definition of true and false); then that suite is executed (and no
other part of the
<tt class=
"keyword">if
</tt> statement is executed or evaluated). If
all expressions are false, the suite of the
<tt class=
"keyword">else
</tt> clause, if
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<span class=
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2.4.2, documentation updated on
28 September
2005.
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