np.copysign

Python math.copysign()方法 (Python math.copysign() method)

math.copysign() method is a library method of math module, it is used to get a number with the sign of another number, it accepts two numbers (either integers or floats) and returns a float value of the first number with the sign of the second number.

math.copysign()方法是數學模塊的庫方法，用于獲取帶有另一個數字的符號的數字，它接受兩個數字(整數或浮點數)并返回帶有符號的第一個數字的浮點值第二個數字。

Note: If anything is passed except the number, the method returns a type error, "TypeError: a float is required".

注意：如果傳遞了除數字以外的任何內容，則該方法將返回類型錯誤“ TypeError：需要浮點數”。

Syntax of math.copysign() method:

math.copysign()方法的語法：

math.copysign(x, y)

Parameter(s): x, y – two numbers, x to be converted and y whose sign is required.

參數： x，y –兩個數字， x是要轉換的， y是需要符號的。

Return value: float – it returns a float value, that is x with the sign of y.

返回值： float-它返回一個浮點值，即x和y的符號。

Example:

例：

Input:a = 10b = -2# function callprint(math.copysign(a, b))Output:-10.0

Python代碼演示math.copysign()方法的示例 (Python code to demonstrate example of math.copysign() method)

# Python code demonstrate example of # math.copysign() method import math# numbers a = 10 b = -2 print("copysign(a,b): ", math.copysign(a,b))a = -10 b = -2 print("copysign(a,b): ", math.copysign(a,b))a = 10.23 b = -2 print("copysign(a,b): ", math.copysign(a,b))a = -10.23 b = -2.34 print("copysign(a,b): ", math.copysign(a,b))a = -10 b = 2 print("copysign(a,b): ", math.copysign(a,b))

Output

輸出量

copysign(a,b): -10.0 copysign(a,b): -10.0 copysign(a,b): -10.23 copysign(a,b): -10.23 copysign(a,b): 10.0

翻譯自: https://www.includehelp.com/python/math-copysign-method-with-example.aspx

np.copysign

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