>>> f"Positive Infinity = {math.inf}" 'Positive Infinity = inf' >>> f"Negative Infinity = {-math.inf}" 'Negative Infinity = -inf' 无穷大不是数值。相反,它被定义为math.inf. Python 在 3.5 版中引入了这个常量,相当于float(“inf”): >>> float("inf") == math.inf True 既float(“i...
Round upwards towards infinity: 0.05883 Round down towards negative infinity: 0.05882 Flowchart: For more Practice: Solve these Related Problems: Write a Python program to round a given Decimal number upward (ceil) and downward (floor) with precision 4, and then print both results. Write a Pytho...
isinf(x) -> bool Return True if x is a positive or negative infinity, and False otherwise.>>> math.isinf(234) False >>> math.isinf(0.1) Falseisnan#如果x不是数字True,否则返回False isnan(x) -> bool Return True if x is a NaN (not a number), and False otherwise.>>> math.isnan...
>>>f"Positive Infinity ={math.inf}" 'Positive Infinity = inf' >>>f"Negative Infinity ={-math.inf}" 'Negative Infinity = -inf' 1. 2. 3. 4. 无穷大不是数值。相反,它被定义为math.inf. Python 在 3.5 版中引入了这个常量,相当于float(“inf”): >>>float("inf")==math.inf True 1. ...
Python中正无穷大和负无穷大的取值如下: >>>f"Positive Infinity ={math.inf}"'Positive Infinity = inf'>>>f"Negative Infinity ={-math.inf}"'Negative Infinity = -inf' 无穷大不是数值。相反,它被定义为math.inf. Python 在 3.5 版中引入了这个常量,相当于float(“inf”): ...
expm1:返回math.e的x(其值为2.71828)次方的值减1 fabs:返回x的绝对值 factorial:取x的阶乘的值 floor:取小于等于x的最大的整数值,如果x是一个整数,则返回自身 fmod:得到x/y的余数,其值是一个浮点数 frexp:返回一个元组(m,e),其计算方式为:x分别除0.5和1,得到一个值的范围 ...
inf}" 'Positive Infinity = inf' >>> f"Negative Infinity = {-math.inf}" 'Negative Infinity ...
#如果x是正无穷大或负无穷大,则返回True,否则返回Falseisinf(x) -> boolReturnTrueifx is a positiveornegative infinity,andFalseotherwise. >>> math.isinf(234) False>>> math.isinf(0.1) False isnan #如果x不是数字True,否则返回Falseisnan(x) -> boolReturnTrueifx is a NaN (not a number),andFa...
The math.inf constant returns a floating-point positive infinity.For negative infinity, use -math.inf.The inf constant is equivalent to float('inf').Syntaxmath.infTechnical DetailsReturn Value: A float value, representing the value of positive infinity Python Version: 3.5...
degrees:把x从弧度转换成角度 e:表示一个常量 exp:返回math.e,也就是2.71828的x次方 expm1:返回math.e的x(其值为2.71828)次方的值减1 fabs:返回x的绝对值 factorial:取x的阶乘的值 floor:取小于等于x的最大的整数值,如果x是一个整数,则返回自身 ...