rounding=ROUND_HALF_UP) return enforced_number # 示例使用 number = 10 enforced_number = enforce_two_decimal_places(number) print(enforced_number) # 输出:10.00
def count_decimal_places(number): return len(str(number).split(".")[1])输入3.14,把它转...
teachesusesDeveloper- name- experience+teachBeginner()Beginner- name+learn()PythonConversion+getStringInput()+checkIfDigit()+convertToFloat()+formatToTwoDecimals()+printResult() 在上面的类图中,Developer类表示经验丰富的开发者,Beginner类表示刚入行的小白,PythonConversion类表示Python字符串转换为两位浮点数...
decimal.Clamped:指数超出了指定范围 decimal.DecimalException:异常基类 decimal.DivisionByZero:除数为 0 decimal.Inexact:发生了取整,结果不精确 decimal.InvalidOperation:无效操作,如果没有被捕获,返回NaN decimal.Overflow:取整后结果超出上限 decimal.Rounded:发生了取整,但结果可能还是精确的 decimal.Subnormal:取整后结...
unicodedata.digit("2")#2unicodedata.decimal("2")#2unicodedata.numeric("2")#2.0unicodedata.digit("2")#2unicodedata.decimal("2")#2unicodedata.numeric("2")#2.0unicodedata.digit(b"3")# TypeError:must be str,not bytes unicodedata.decimal(b"3")# TypeError:must be str,not bytes ...
1 >>> x = 1234.56789 2 3 >>> # Two decimal places of accuracy 4 >>> format(x, '0.2f') #无空格,小数保留2位 5 '1234.57' 6 7 >>> # Right justified in 10 chars, one-digit accuracy 8 >>> format(x, '>10.1f') #数字输出靠右,总计长度为10,小数保留1位 9 ' 1234.6' 10 11 ...
str2 = "3" #unicode digit str3 = "½¼" #fractional value print("str1 :", str1) print("str1.isdecimal () : ", str1.isdecimal ()) print("str1.isnumeric () : ", str1.isnumeric ()) print("str1.isdigit () : ", str1.isdigit ()) ...
_Number = Union[float, Decimal, Fraction] _NumberT = TypeVar('_NumberT', float, Decimal, Fraction) 这种方法是正确的,但有限。它不支持标准库之外的数字类型,而numbers ABCs 在运行时支持这些数字类型——当数字类型被注册为虚拟子类时。当前的趋势是推荐typing模块提供的数字协议,我们在“可运行时检查的...
2)=2.15如果要考虑四舍五入的话,可以用quantize如: Decimal('2.135').quantize(Decimal('0....
unicodedata.numeric("2") # 2.0 unicodedata.digit(b"3") # TypeError: must be str, not bytes unicodedata.decimal(b"3") # TypeError: must be str, not bytes unicodedata.numeric(b"3") # TypeError: must be str, not bytes unicodedata.digit("Ⅷ") # ValueError: not a digit ...