Python decimal.Rounded() Examples

The following are 9 code examples of decimal.Rounded(). You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may also want to check out all available functions/classes of the module decimal , or try the search function .
Example #1
Source File: utils.py    From GTDWeb with GNU General Public License v2.0 6 votes vote down vote up 
def format_number(value, max_digits, decimal_places):
    """
    Formats a number into a string with the requisite number of digits and
    decimal places.
    """
    if value is None:
        return None
    if isinstance(value, decimal.Decimal):
        context = decimal.getcontext().copy()
        if max_digits is not None:
            context.prec = max_digits
        if decimal_places is not None:
            value = value.quantize(decimal.Decimal(".1") ** decimal_places, context=context)
        else:
            context.traps[decimal.Rounded] = 1
            value = context.create_decimal(value)
        return "{:f}".format(value)
    if decimal_places is not None:
        return "%.*f" % (decimal_places, value)
    return "{:f}".format(value)
Example #2
Source File: utils.py    From bioforum with MIT License 6 votes vote down vote up 
def format_number(value, max_digits, decimal_places):
    """
    Format a number into a string with the requisite number of digits and
    decimal places.
    """
    if value is None:
        return None
    if isinstance(value, decimal.Decimal):
        context = decimal.getcontext().copy()
        if max_digits is not None:
            context.prec = max_digits
        if decimal_places is not None:
            value = value.quantize(decimal.Decimal(".1") ** decimal_places, context=context)
        else:
            context.traps[decimal.Rounded] = 1
            value = context.create_decimal(value)
        return "{:f}".format(value)
    if decimal_places is not None:
        return "%.*f" % (decimal_places, value)
    return "{:f}".format(value)
Example #3
Source File: utils.py    From Hands-On-Application-Development-with-PyCharm with MIT License 6 votes vote down vote up 
def format_number(value, max_digits, decimal_places):
    """
    Format a number into a string with the requisite number of digits and
    decimal places.
    """
    if value is None:
        return None
    if isinstance(value, decimal.Decimal):
        context = decimal.getcontext().copy()
        if max_digits is not None:
            context.prec = max_digits
        if decimal_places is not None:
            value = value.quantize(decimal.Decimal(1).scaleb(-decimal_places), context=context)
        else:
            context.traps[decimal.Rounded] = 1
            value = context.create_decimal(value)
        return "{:f}".format(value)
    if decimal_places is not None:
        return "%.*f" % (decimal_places, value)
    return "{:f}".format(value)
Example #4
Source File: utils.py    From python with Apache License 2.0 6 votes vote down vote up 
def format_number(value, max_digits, decimal_places):
    """
    Formats a number into a string with the requisite number of digits and
    decimal places.
    """
    if value is None:
        return None
    if isinstance(value, decimal.Decimal):
        context = decimal.getcontext().copy()
        if max_digits is not None:
            context.prec = max_digits
        if decimal_places is not None:
            value = value.quantize(decimal.Decimal(".1") ** decimal_places, context=context)
        else:
            context.traps[decimal.Rounded] = 1
            value = context.create_decimal(value)
        return "{:f}".format(value)
    if decimal_places is not None:
        return "%.*f" % (decimal_places, value)
    return "{:f}".format(value)
Example #5
Source File: utils.py    From openhgsenti with Apache License 2.0 6 votes vote down vote up 
def format_number(value, max_digits, decimal_places):
    """
    Formats a number into a string with the requisite number of digits and
    decimal places.
    """
    if value is None:
        return None
    if isinstance(value, decimal.Decimal):
        context = decimal.getcontext().copy()
        if max_digits is not None:
            context.prec = max_digits
        if decimal_places is not None:
            value = value.quantize(decimal.Decimal(".1") ** decimal_places, context=context)
        else:
            context.traps[decimal.Rounded] = 1
            value = context.create_decimal(value)
        return "{:f}".format(value)
    if decimal_places is not None:
        return "%.*f" % (decimal_places, value)
    return "{:f}".format(value)
Example #6
Source File: utils.py    From python2017 with MIT License 6 votes vote down vote up 
def format_number(value, max_digits, decimal_places):
    """
    Formats a number into a string with the requisite number of digits and
    decimal places.
    """
    if value is None:
        return None
    if isinstance(value, decimal.Decimal):
        context = decimal.getcontext().copy()
        if max_digits is not None:
            context.prec = max_digits
        if decimal_places is not None:
            value = value.quantize(decimal.Decimal(".1") ** decimal_places, context=context)
        else:
            context.traps[decimal.Rounded] = 1
            value = context.create_decimal(value)
        return "{:f}".format(value)
    if decimal_places is not None:
        return "%.*f" % (decimal_places, value)
    return "{:f}".format(value)
Example #7
Source File: test_utils.py    From djongo with GNU Affero General Public License v3.0 5 votes vote down vote up 
def test_format_number(self):
        def equal(value, max_d, places, result):
            self.assertEqual(format_number(Decimal(value), max_d, places), result)

        equal('0', 12, 3, '0.000')
        equal('0', 12, 8, '0.00000000')
        equal('1', 12, 9, '1.000000000')
        equal('0.00000000', 12, 8, '0.00000000')
        equal('0.000000004', 12, 8, '0.00000000')
        equal('0.000000008', 12, 8, '0.00000001')
        equal('0.000000000000000000999', 10, 8, '0.00000000')
        equal('0.1234567890', 12, 10, '0.1234567890')
        equal('0.1234567890', 12, 9, '0.123456789')
        equal('0.1234567890', 12, 8, '0.12345679')
        equal('0.1234567890', 12, 5, '0.12346')
        equal('0.1234567890', 12, 3, '0.123')
        equal('0.1234567890', 12, 1, '0.1')
        equal('0.1234567890', 12, 0, '0')
        equal('0.1234567890', None, 0, '0')
        equal('1234567890.1234567890', None, 0, '1234567890')
        equal('1234567890.1234567890', None, 2, '1234567890.12')
        equal('0.1234', 5, None, '0.1234')
        equal('123.12', 5, None, '123.12')

        with self.assertRaises(Rounded):
            equal('0.1234567890', 5, None, '0.12346')
        with self.assertRaises(Rounded):
            equal('1234567890.1234', 5, None, '1234600000')
Example #8
Source File: test_utils.py    From djongo with GNU Affero General Public License v3.0 5 votes vote down vote up 
def test_format_number(self):
        def equal(value, max_d, places, result):
            self.assertEqual(format_number(Decimal(value), max_d, places), result)

        equal('0', 12, 3, '0.000')
        equal('0', 12, 8, '0.00000000')
        equal('1', 12, 9, '1.000000000')
        equal('0.00000000', 12, 8, '0.00000000')
        equal('0.000000004', 12, 8, '0.00000000')
        equal('0.000000008', 12, 8, '0.00000001')
        equal('0.000000000000000000999', 10, 8, '0.00000000')
        equal('0.1234567890', 12, 10, '0.1234567890')
        equal('0.1234567890', 12, 9, '0.123456789')
        equal('0.1234567890', 12, 8, '0.12345679')
        equal('0.1234567890', 12, 5, '0.12346')
        equal('0.1234567890', 12, 3, '0.123')
        equal('0.1234567890', 12, 1, '0.1')
        equal('0.1234567890', 12, 0, '0')
        equal('0.1234567890', None, 0, '0')
        equal('1234567890.1234567890', None, 0, '1234567890')
        equal('1234567890.1234567890', None, 2, '1234567890.12')
        equal('0.1234', 5, None, '0.1234')
        equal('123.12', 5, None, '123.12')

        with self.assertRaises(Rounded):
            equal('0.1234567890', 5, None, '0.12346')
        with self.assertRaises(Rounded):
            equal('1234567890.1234', 5, None, '1234600000')
Example #9
Source File: tests.py    From django-sqlserver with MIT License 4 votes vote down vote up 
def test_format_number(self):
        """
        Test the format_number converter utility
        """
        def equal(value, max_d, places, result):
            self.assertEqual(format_number(Decimal(value), max_d, places), result)

        equal('0', 12, 3,
              '0.000')
        equal('0', 12, 8,
              '0.00000000')
        equal('1', 12, 9,
              '1.000000000')
        equal('0.00000000', 12, 8,
              '0.00000000')
        equal('0.000000004', 12, 8,
              '0.00000000')
        equal('0.000000008', 12, 8,
              '0.00000001')
        equal('0.000000000000000000999', 10, 8,
              '0.00000000')
        equal('0.1234567890', 12, 10,
              '0.1234567890')
        equal('0.1234567890', 12, 9,
              '0.123456789')
        equal('0.1234567890', 12, 8,
              '0.12345679')
        equal('0.1234567890', 12, 5,
              '0.12346')
        equal('0.1234567890', 12, 3,
              '0.123')
        equal('0.1234567890', 12, 1,
              '0.1')
        equal('0.1234567890', 12, 0,
              '0')
        equal('0.1234567890', None, 0,
              '0')
        equal('1234567890.1234567890', None, 0,
              '1234567890')
        equal('1234567890.1234567890', None, 2,
              '1234567890.12')
        equal('0.1234', 5, None,
              '0.1234')
        equal('123.12', 5, None,
              '123.12')
        with self.assertRaises(Rounded):
            equal('0.1234567890', 5, None,
                  '0.12346')
        with self.assertRaises(Rounded):
            equal('1234567890.1234', 5, None,
                  '1234600000')