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Editing: babel.numbers-module.html
<?xml version="1.0" encoding="ascii"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> <head> <title>babel.numbers</title> <link rel="stylesheet" href="epydoc.css" type="text/css" /> <script type="text/javascript" src="epydoc.js"></script> </head> <body bgcolor="white" text="black" link="blue" vlink="#204080" alink="#204080"> <!-- ==================== NAVIGATION BAR ==================== --> <table class="navbar" border="0" width="100%" cellpadding="0" bgcolor="#a0c0ff" cellspacing="0"> <tr valign="middle"> <!-- Home link --> <th> <a href="babel-module.html">Home</a> </th> <!-- Tree link --> <th> <a href="module-tree.html">Trees</a> </th> <!-- Index link --> <th> <a href="identifier-index.html">Indices</a> </th> <!-- Help link --> <th> <a href="help.html">Help</a> </th> <!-- Project homepage --> <th class="navbar" align="right" width="100%"> <table border="0" cellpadding="0" cellspacing="0"> <tr><th class="navbar" align="center" ><a class="navbar" target="_top" href="../index.html">Documentation Index</a></th> </tr></table></th> </tr> </table> <table width="100%" cellpadding="0" cellspacing="0"> <tr valign="top"> <td width="100%"> <span class="breadcrumbs"> <a href="babel-module.html">Package babel</a> :: Module numbers </span> </td> <td> <table cellpadding="0" cellspacing="0"> <!-- hide/show private --> </table> </td> </tr> </table> <!-- ==================== MODULE DESCRIPTION ==================== --> <h1 class="epydoc">Module numbers</h1><p class="nomargin-top"></p> <p>Locale dependent formatting and parsing of numeric data.</p> <p>The default locale for the functions in this module is determined by the following environment variables, in that order:</p> <blockquote> <ul class="rst-simple"> <li><tt class="rst-docutils literal">LC_NUMERIC</tt>,</li> <li><tt class="rst-docutils literal">LC_ALL</tt>, and</li> <li><tt class="rst-docutils literal">LANG</tt></li> </ul> </blockquote> <!-- ==================== CLASSES ==================== --> <a name="section-Classes"></a> <table class="summary" border="1" cellpadding="3" cellspacing="0" width="100%" bgcolor="white"> <tr bgcolor="#70b0f0" class="table-header"> <td align="left" colspan="2" class="table-header"> <span class="table-header">Classes</span></td> </tr> <tr> <td width="15%" align="right" valign="top" class="summary"> <span class="summary-type"> </span> </td><td class="summary"> <a href="babel.numbers.NumberFormatError-class.html" class="summary-name">NumberFormatError</a><br /> Exception raised when a string cannot be parsed into a number. </td> </tr> </table> <!-- ==================== FUNCTIONS ==================== --> <a name="section-Functions"></a> <table class="summary" border="1" cellpadding="3" cellspacing="0" width="100%" bgcolor="white"> <tr bgcolor="#70b0f0" class="table-header"> <td align="left" colspan="2" class="table-header"> <span class="table-header">Functions</span></td> </tr> <tr> <td width="15%" align="right" valign="top" class="summary"> <span class="summary-type"><code class="link">unicode</code></span> </td><td class="summary"> <table width="100%" cellpadding="0" cellspacing="0" border="0"> <tr> <td><span class="summary-sig"><a href="babel.numbers-module.html#format_number" class="summary-sig-name">format_number</a>(<span class="summary-sig-arg">number</span>, <span class="summary-sig-arg">locale</span>=<span class="summary-sig-default"><code class="variable-quote">'</code><code class="variable-string">de_DE</code><code class="variable-quote">'</code></span>)</span><br /> Return the given number formatted for a specific locale.</td> <td align="right" valign="top"> </td> </tr> </table> </td> </tr> <tr> <td width="15%" align="right" valign="top" class="summary"> <span class="summary-type"><code class="link">unicode</code></span> </td><td class="summary"> <table width="100%" cellpadding="0" cellspacing="0" border="0"> <tr> <td><span class="summary-sig"><a href="babel.numbers-module.html#format_decimal" class="summary-sig-name">format_decimal</a>(<span class="summary-sig-arg">number</span>, <span class="summary-sig-arg">format</span>=<span class="summary-sig-default">None</span>, <span class="summary-sig-arg">locale</span>=<span class="summary-sig-default"><code class="variable-quote">'</code><code class="variable-string">de_DE</code><code class="variable-quote">'</code></span>)</span><br /> Return the given decimal number formatted for a specific locale.</td> <td align="right" valign="top"> </td> </tr> </table> </td> </tr> <tr> <td width="15%" align="right" valign="top" class="summary"> <span class="summary-type"><code class="link">unicode</code></span> </td><td class="summary"> <table width="100%" cellpadding="0" cellspacing="0" border="0"> <tr> <td><span class="summary-sig"><a href="babel.numbers-module.html#format_currency" class="summary-sig-name">format_currency</a>(<span class="summary-sig-arg">number</span>, <span class="summary-sig-arg">currency</span>, <span class="summary-sig-arg">format</span>=<span class="summary-sig-default">None</span>, <span class="summary-sig-arg">locale</span>=<span class="summary-sig-default"><code class="variable-quote">'</code><code class="variable-string">de_DE</code><code class="variable-quote">'</code></span>)</span><br /> Return formatted currency value.</td> <td align="right" valign="top"> </td> </tr> </table> </td> </tr> <tr> <td width="15%" align="right" valign="top" class="summary"> <span class="summary-type"><code class="link">unicode</code></span> </td><td class="summary"> <table width="100%" cellpadding="0" cellspacing="0" border="0"> <tr> <td><span class="summary-sig"><a href="babel.numbers-module.html#format_percent" class="summary-sig-name">format_percent</a>(<span class="summary-sig-arg">number</span>, <span class="summary-sig-arg">format</span>=<span class="summary-sig-default">None</span>, <span class="summary-sig-arg">locale</span>=<span class="summary-sig-default"><code class="variable-quote">'</code><code class="variable-string">de_DE</code><code class="variable-quote">'</code></span>)</span><br /> Return formatted percent value for a specific locale.</td> <td align="right" valign="top"> </td> </tr> </table> </td> </tr> <tr> <td width="15%" align="right" valign="top" class="summary"> <span class="summary-type"><code class="link">unicode</code></span> </td><td class="summary"> <table width="100%" cellpadding="0" cellspacing="0" border="0"> <tr> <td><span class="summary-sig"><a href="babel.numbers-module.html#format_scientific" class="summary-sig-name">format_scientific</a>(<span class="summary-sig-arg">number</span>, <span class="summary-sig-arg">format</span>=<span class="summary-sig-default">None</span>, <span class="summary-sig-arg">locale</span>=<span class="summary-sig-default"><code class="variable-quote">'</code><code class="variable-string">de_DE</code><code class="variable-quote">'</code></span>)</span><br /> Return value formatted in scientific notation for a specific locale.</td> <td align="right" valign="top"> </td> </tr> </table> </td> </tr> <tr> <td width="15%" align="right" valign="top" class="summary"> <span class="summary-type"><code class="link">long</code></span> </td><td class="summary"> <table width="100%" cellpadding="0" cellspacing="0" border="0"> <tr> <td><span class="summary-sig"><a href="babel.numbers-module.html#parse_number" class="summary-sig-name">parse_number</a>(<span class="summary-sig-arg">string</span>, <span class="summary-sig-arg">locale</span>=<span class="summary-sig-default"><code class="variable-quote">'</code><code class="variable-string">de_DE</code><code class="variable-quote">'</code></span>)</span><br /> Parse localized number string into a long integer.</td> <td align="right" valign="top"> </td> </tr> </table> </td> </tr> <tr> <td width="15%" align="right" valign="top" class="summary"> <span class="summary-type"><code class="link">float</code></span> </td><td class="summary"> <table width="100%" cellpadding="0" cellspacing="0" border="0"> <tr> <td><span class="summary-sig"><a href="babel.numbers-module.html#parse_decimal" class="summary-sig-name">parse_decimal</a>(<span class="summary-sig-arg">string</span>, <span class="summary-sig-arg">locale</span>=<span class="summary-sig-default"><code class="variable-quote">'</code><code class="variable-string">de_DE</code><code class="variable-quote">'</code></span>)</span><br /> Parse localized decimal string into a float.</td> <td align="right" valign="top"> </td> </tr> </table> </td> </tr> </table> <!-- ==================== FUNCTION DETAILS ==================== --> <a name="section-FunctionDetails"></a> <table class="details" border="1" cellpadding="3" cellspacing="0" width="100%" bgcolor="white"> <tr bgcolor="#70b0f0" class="table-header"> <td align="left" colspan="2" class="table-header"> <span class="table-header">Function Details</span></td> </tr> </table> <a name="format_number"></a> <div> <table class="details" border="1" cellpadding="3" cellspacing="0" width="100%" bgcolor="white"> <tr><td> <table width="100%" cellpadding="0" cellspacing="0" border="0"> <tr valign="top"><td> <h3 class="epydoc"><span class="sig"><span class="sig-name">format_number</span>(<span class="sig-arg">number</span>, <span class="sig-arg">locale</span>=<span class="sig-default"><code class="variable-quote">'</code><code class="variable-string">de_DE</code><code class="variable-quote">'</code></span>)</span> </h3> </td><td align="right" valign="top" > </td> </tr></table> <p>Return the given number formatted for a specific locale.</p> <pre class="py-doctest"> <span class="py-prompt">>>> </span>format_number(1099, locale=<span class="py-string">'en_US'</span>) <span class="py-output">u'1,099'</span></pre> <dl class="fields"> <dt>Parameters:</dt> <dd><ul class="nomargin-top"> <li><strong class="pname"><code>number</code></strong> - the number to format</li> <li><strong class="pname"><code>locale</code></strong> - the <a href="babel.core.Locale-class.html" class="link">Locale</a> object or locale identifier</li> </ul></dd> <dt>Returns: <code class="link">unicode</code></dt> <dd>the formatted number</dd> </dl> </td></tr></table> </div> <a name="format_decimal"></a> <div> <table class="details" border="1" cellpadding="3" cellspacing="0" width="100%" bgcolor="white"> <tr><td> <table width="100%" cellpadding="0" cellspacing="0" border="0"> <tr valign="top"><td> <h3 class="epydoc"><span class="sig"><span class="sig-name">format_decimal</span>(<span class="sig-arg">number</span>, <span class="sig-arg">format</span>=<span class="sig-default">None</span>, <span class="sig-arg">locale</span>=<span class="sig-default"><code class="variable-quote">'</code><code class="variable-string">de_DE</code><code class="variable-quote">'</code></span>)</span> </h3> </td><td align="right" valign="top" > </td> </tr></table> <p>Return the given decimal number formatted for a specific locale.</p> <pre class="py-doctest"> <span class="py-prompt">>>> </span>format_decimal(1.2345, locale=<span class="py-string">'en_US'</span>) <span class="py-output">u'1.234'</span> <span class="py-output"></span><span class="py-prompt">>>> </span>format_decimal(1.2346, locale=<span class="py-string">'en_US'</span>) <span class="py-output">u'1.235'</span> <span class="py-output"></span><span class="py-prompt">>>> </span>format_decimal(-1.2346, locale=<span class="py-string">'en_US'</span>) <span class="py-output">u'-1.235'</span> <span class="py-output"></span><span class="py-prompt">>>> </span>format_decimal(1.2345, locale=<span class="py-string">'sv_SE'</span>) <span class="py-output">u'1,234'</span> <span class="py-output"></span><span class="py-prompt">>>> </span>format_decimal(12345, locale=<span class="py-string">'de'</span>) <span class="py-output">u'12.345'</span></pre> <p>The appropriate thousands grouping and the decimal separator are used for each locale:</p> <pre class="py-doctest"> <span class="py-prompt">>>> </span>format_decimal(12345.5, locale=<span class="py-string">'en_US'</span>) <span class="py-output">u'12,345.5'</span></pre> <dl class="fields"> <dt>Parameters:</dt> <dd><ul class="nomargin-top"> <li><strong class="pname"><code>number</code></strong> - the number to format</li> <li><strong class="pname"><code>format</code></strong></li> <li><strong class="pname"><code>locale</code></strong> - the <a href="babel.core.Locale-class.html" class="link">Locale</a> object or locale identifier</li> </ul></dd> <dt>Returns: <code class="link">unicode</code></dt> <dd>the formatted decimal number</dd> </dl> </td></tr></table> </div> <a name="format_currency"></a> <div> <table class="details" border="1" cellpadding="3" cellspacing="0" width="100%" bgcolor="white"> <tr><td> <table width="100%" cellpadding="0" cellspacing="0" border="0"> <tr valign="top"><td> <h3 class="epydoc"><span class="sig"><span class="sig-name">format_currency</span>(<span class="sig-arg">number</span>, <span class="sig-arg">currency</span>, <span class="sig-arg">format</span>=<span class="sig-default">None</span>, <span class="sig-arg">locale</span>=<span class="sig-default"><code class="variable-quote">'</code><code class="variable-string">de_DE</code><code class="variable-quote">'</code></span>)</span> </h3> </td><td align="right" valign="top" > </td> </tr></table> <p>Return formatted currency value.</p> <pre class="py-doctest"> <span class="py-prompt">>>> </span>format_currency(1099.98, <span class="py-string">'USD'</span>, locale=<span class="py-string">'en_US'</span>) <span class="py-output">u'$1,099.98'</span> <span class="py-output"></span><span class="py-prompt">>>> </span>format_currency(1099.98, <span class="py-string">'USD'</span>, locale=<span class="py-string">'es_CO'</span>) <span class="py-output">u'US$\xa01.099,98'</span> <span class="py-output"></span><span class="py-prompt">>>> </span>format_currency(1099.98, <span class="py-string">'EUR'</span>, locale=<span class="py-string">'de_DE'</span>) <span class="py-output">u'1.099,98\xa0\u20ac'</span></pre> <p>The pattern can also be specified explicitly:</p> <pre class="py-doctest"> <span class="py-prompt">>>> </span>format_currency(1099.98, <span class="py-string">'EUR'</span>, u<span class="py-string">'¤¤ #,##0.00'</span>, locale=<span class="py-string">'en_US'</span>) <span class="py-output">u'EUR 1,099.98'</span></pre> <dl class="fields"> <dt>Parameters:</dt> <dd><ul class="nomargin-top"> <li><strong class="pname"><code>number</code></strong> - the number to format</li> <li><strong class="pname"><code>currency</code></strong> - the currency code</li> <li><strong class="pname"><code>locale</code></strong> - the <a href="babel.core.Locale-class.html" class="link">Locale</a> object or locale identifier</li> </ul></dd> <dt>Returns: <code class="link">unicode</code></dt> <dd>the formatted currency value</dd> </dl> </td></tr></table> </div> <a name="format_percent"></a> <div> <table class="details" border="1" cellpadding="3" cellspacing="0" width="100%" bgcolor="white"> <tr><td> <table width="100%" cellpadding="0" cellspacing="0" border="0"> <tr valign="top"><td> <h3 class="epydoc"><span class="sig"><span class="sig-name">format_percent</span>(<span class="sig-arg">number</span>, <span class="sig-arg">format</span>=<span class="sig-default">None</span>, <span class="sig-arg">locale</span>=<span class="sig-default"><code class="variable-quote">'</code><code class="variable-string">de_DE</code><code class="variable-quote">'</code></span>)</span> </h3> </td><td align="right" valign="top" > </td> </tr></table> <p>Return formatted percent value for a specific locale.</p> <pre class="py-doctest"> <span class="py-prompt">>>> </span>format_percent(0.34, locale=<span class="py-string">'en_US'</span>) <span class="py-output">u'34%'</span> <span class="py-output"></span><span class="py-prompt">>>> </span>format_percent(25.1234, locale=<span class="py-string">'en_US'</span>) <span class="py-output">u'2,512%'</span> <span class="py-output"></span><span class="py-prompt">>>> </span>format_percent(25.1234, locale=<span class="py-string">'sv_SE'</span>) <span class="py-output">u'2\xa0512\xa0%'</span></pre> <p>The format pattern can also be specified explicitly:</p> <pre class="py-doctest"> <span class="py-prompt">>>> </span>format_percent(25.1234, u<span class="py-string">'#,##0\u2030'</span>, locale=<span class="py-string">'en_US'</span>) <span class="py-output">u'25,123\u2030'</span></pre> <dl class="fields"> <dt>Parameters:</dt> <dd><ul class="nomargin-top"> <li><strong class="pname"><code>number</code></strong> - the percent number to format</li> <li><strong class="pname"><code>format</code></strong></li> <li><strong class="pname"><code>locale</code></strong> - the <a href="babel.core.Locale-class.html" class="link">Locale</a> object or locale identifier</li> </ul></dd> <dt>Returns: <code class="link">unicode</code></dt> <dd>the formatted percent number</dd> </dl> </td></tr></table> </div> <a name="format_scientific"></a> <div> <table class="details" border="1" cellpadding="3" cellspacing="0" width="100%" bgcolor="white"> <tr><td> <table width="100%" cellpadding="0" cellspacing="0" border="0"> <tr valign="top"><td> <h3 class="epydoc"><span class="sig"><span class="sig-name">format_scientific</span>(<span class="sig-arg">number</span>, <span class="sig-arg">format</span>=<span class="sig-default">None</span>, <span class="sig-arg">locale</span>=<span class="sig-default"><code class="variable-quote">'</code><code class="variable-string">de_DE</code><code class="variable-quote">'</code></span>)</span> </h3> </td><td align="right" valign="top" > </td> </tr></table> <p>Return value formatted in scientific notation for a specific locale.</p> <pre class="py-doctest"> <span class="py-prompt">>>> </span>format_scientific(10000, locale=<span class="py-string">'en_US'</span>) <span class="py-output">u'1E4'</span></pre> <p>The format pattern can also be specified explicitly:</p> <pre class="py-doctest"> <span class="py-prompt">>>> </span>format_scientific(1234567, u<span class="py-string">'##0E00'</span>, locale=<span class="py-string">'en_US'</span>) <span class="py-output">u'1.23E06'</span></pre> <dl class="fields"> <dt>Parameters:</dt> <dd><ul class="nomargin-top"> <li><strong class="pname"><code>number</code></strong> - the number to format</li> <li><strong class="pname"><code>format</code></strong></li> <li><strong class="pname"><code>locale</code></strong> - the <a href="babel.core.Locale-class.html" class="link">Locale</a> object or locale identifier</li> </ul></dd> <dt>Returns: <code class="link">unicode</code></dt> <dd>value formatted in scientific notation.</dd> </dl> </td></tr></table> </div> <a name="parse_number"></a> <div> <table class="details" border="1" cellpadding="3" cellspacing="0" width="100%" bgcolor="white"> <tr><td> <table width="100%" cellpadding="0" cellspacing="0" border="0"> <tr valign="top"><td> <h3 class="epydoc"><span class="sig"><span class="sig-name">parse_number</span>(<span class="sig-arg">string</span>, <span class="sig-arg">locale</span>=<span class="sig-default"><code class="variable-quote">'</code><code class="variable-string">de_DE</code><code class="variable-quote">'</code></span>)</span> </h3> </td><td align="right" valign="top" > </td> </tr></table> <p>Parse localized number string into a long integer.</p> <pre class="py-doctest"> <span class="py-prompt">>>> </span>parse_number(<span class="py-string">'1,099'</span>, locale=<span class="py-string">'en_US'</span>) <span class="py-output">1099L</span> <span class="py-output"></span><span class="py-prompt">>>> </span>parse_number(<span class="py-string">'1.099'</span>, locale=<span class="py-string">'de_DE'</span>) <span class="py-output">1099L</span></pre> <p>When the given string cannot be parsed, an exception is raised:</p> <pre class="py-doctest"> <span class="py-prompt">>>> </span>parse_number(<span class="py-string">'1.099,98'</span>, locale=<span class="py-string">'de'</span>) <span class="py-except">Traceback (most recent call last):</span> <span class="py-except"> ...</span> <span class="py-except">NumberFormatError: '1.099,98' is not a valid number</span></pre> <dl class="fields"> <dt>Parameters:</dt> <dd><ul class="nomargin-top"> <li><strong class="pname"><code>string</code></strong> - the string to parse</li> <li><strong class="pname"><code>locale</code></strong> - the <a href="babel.core.Locale-class.html" class="link">Locale</a> object or locale identifier</li> </ul></dd> <dt>Returns: <code class="link">long</code></dt> <dd>the parsed number</dd> <dt>Raises:</dt> <dd><ul class="nomargin-top"> <li><code><strong class='fraise'><a href="babel.numbers.NumberFormatError-class.html">NumberFormatError</a></strong></code> - if the string can not be converted to a number</li> </ul></dd> </dl> </td></tr></table> </div> <a name="parse_decimal"></a> <div> <table class="details" border="1" cellpadding="3" cellspacing="0" width="100%" bgcolor="white"> <tr><td> <table width="100%" cellpadding="0" cellspacing="0" border="0"> <tr valign="top"><td> <h3 class="epydoc"><span class="sig"><span class="sig-name">parse_decimal</span>(<span class="sig-arg">string</span>, <span class="sig-arg">locale</span>=<span class="sig-default"><code class="variable-quote">'</code><code class="variable-string">de_DE</code><code class="variable-quote">'</code></span>)</span> </h3> </td><td align="right" valign="top" > </td> </tr></table> <p>Parse localized decimal string into a float.</p> <pre class="py-doctest"> <span class="py-prompt">>>> </span>parse_decimal(<span class="py-string">'1,099.98'</span>, locale=<span class="py-string">'en_US'</span>) <span class="py-output">1099.98</span> <span class="py-output"></span><span class="py-prompt">>>> </span>parse_decimal(<span class="py-string">'1.099,98'</span>, locale=<span class="py-string">'de'</span>) <span class="py-output">1099.98</span></pre> <p>When the given string cannot be parsed, an exception is raised:</p> <pre class="py-doctest"> <span class="py-prompt">>>> </span>parse_decimal(<span class="py-string">'2,109,998'</span>, locale=<span class="py-string">'de'</span>) <span class="py-except">Traceback (most recent call last):</span> <span class="py-except"> ...</span> <span class="py-except">NumberFormatError: '2,109,998' is not a valid decimal number</span></pre> <dl class="fields"> <dt>Parameters:</dt> <dd><ul class="nomargin-top"> <li><strong class="pname"><code>string</code></strong> - the string to parse</li> <li><strong class="pname"><code>locale</code></strong> - the <a href="babel.core.Locale-class.html" class="link">Locale</a> object or locale identifier</li> </ul></dd> <dt>Returns: <code class="link">float</code></dt> <dd>the parsed decimal number</dd> <dt>Raises:</dt> <dd><ul class="nomargin-top"> <li><code><strong class='fraise'><a href="babel.numbers.NumberFormatError-class.html">NumberFormatError</a></strong></code> - if the string can not be converted to a decimal number</li> </ul></dd> </dl> </td></tr></table> </div> <br /> <!-- ==================== NAVIGATION BAR ==================== --> <table class="navbar" border="0" width="100%" cellpadding="0" bgcolor="#a0c0ff" cellspacing="0"> <tr valign="middle"> <!-- Home link --> <th> <a href="babel-module.html">Home</a> </th> <!-- Tree link --> <th> <a href="module-tree.html">Trees</a> </th> <!-- Index link --> <th> <a href="identifier-index.html">Indices</a> </th> <!-- Help link --> <th> <a href="help.html">Help</a> </th> <!-- Project homepage --> <th class="navbar" align="right" width="100%"> <table border="0" cellpadding="0" cellspacing="0"> <tr><th class="navbar" align="center" ><a class="navbar" target="_top" href="../index.html">Documentation Index</a></th> </tr></table></th> </tr> </table> <table 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