Type LocaleNumbers

      object --+        
               |        
     Inheritance --+    
                   |    
AttributeInheritance --+
                       |
                      LocaleNumbers

Implementation of ILocaleCurrency including inheritance support.

     >>> numbers = LocaleNumbers()
     >>> numbers.symbols = {
     ...     'decimal': ',', 'group': '.', 'list': ';', 'percentSign': '%',
     ...     'nativeZeroDigit': '0', 'patternDigit': '#', 'plusSign': '+',
     ...     'minusSign': '-', 'exponential': 'E', 'perMille': 'o/oo',
     ...     'infinity': 'oo', 'nan': 'N/A'}

     Setting up and accessing totally unnamed decimal format
     (very common scenario)

     >>> length = LocaleFormatLength()
     >>> format = LocaleFormat()
     >>> format.pattern = u'#,##0.###;-#,##0.###'
     >>> length.formats = {None: format}
     >>> numbers.decimalFormats = {None: length}
     >>> formatter = numbers.getFormatter('decimal')
     >>> formatter.format(3.4)
     u'3,4'
     >>> formatter.format(-3.4567)
     u'-3,457'
     >>> formatter.format(3210.4)
     u'3.210,4'

     Setting up and accessing scientific formats with named format lengths

     >>> longlength = LocaleFormatLength('long')
     >>> format = LocaleFormat()
     >>> format.pattern = u'0.000###E+00'
     >>> longlength.formats = {None: format}
     >>> mediumlength = LocaleFormatLength('long')
     >>> format = LocaleFormat()
     >>> format.pattern = u'0.00##E+00'
     >>> mediumlength.formats = {None: format}
     >>> numbers.scientificFormats = {'long': longlength,
     ...                              'medium': mediumlength}
     >>> numbers.defaultScientificFormat = 'long'
     >>> formatter = numbers.getFormatter('scientific')
     >>> formatter.format(1234.5678)
     u'1,234568E+03'
     >>> formatter = numbers.getFormatter('scientific', 'medium')
     >>> formatter.format(1234.5678)
     u'1,2346E+03'

     Setting up and accessing percent formats with named format lengths
     and format names

     >>> longlength = LocaleFormatLength('long')
     >>> fooformat = LocaleFormat()
     >>> fooformat.pattern = u'0.##0%'
     >>> barformat = LocaleFormat()
     >>> barformat.pattern = u'0%'
     >>> longlength.formats = {None: fooformat, 'bar': barformat}
     >>> numbers.percentFormats = {'long': longlength}
     >>> numbers.defaultPercentFormat = 'long'
     >>> formatter = numbers.getFormatter('percent')
     >>> formatter.format(123.45678)
     u'123,457%'
     >>> formatter = numbers.getFormatter('percent', name='bar')
     >>> formatter.format(123.45678)
     u'123%'

     ...using a default name

     >>> numbers.percentFormats['long'].default = 'bar'
     >>> formatter = numbers.getFormatter('percent')
     >>> formatter.format(123.45678)
     u'123%'