Python decimal 模块，Rounded() 实例源码

我们从Python开源项目中，提取了以下8个代码示例，用于说明如何使用decimal.Rounded()。

项目：CodingDojo 作者：ComputerSocietyUNB | 项目源码 | 文件源码

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)

项目：trydjango18 作者：wei0104 | 项目源码 | 文件源码

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)

项目：lifesoundtrack 作者：MTG | 项目源码 | 文件源码

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)

项目：liberator 作者：libscie | 项目源码 | 文件源码

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)

项目：djanoDoc 作者：JustinChavez | 项目源码 | 文件源码

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)

项目：django-next-train 作者：bitpixdigital | 项目源码 | 文件源码

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)

项目：LatinSounds_AppEnviaMail 作者：G3ek-aR | 项目源码 | 文件源码

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)

项目：django-wechat-api 作者：crazy-canux | 项目源码 | 文件源码

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)