# 示例代码 def loss_function(x): return abs(x) + x2 使用梯度下降法求最小值 x = -5 learning_rate = 0.1 for _ in range(100): gradient = 1 if x > 0 else -1 + 2 * x x -= learning_rate * gradient print(x) # 输出接近于0 五、ABS()函数的局限性和注意事项 虽然abs()函数在...
I was working on a data analysis project where I needed to calculate the absolute values of a large dataset. The issue is, while Python has a built-inabs()function, it’s not optimized for large numerical arrays. This is whereNumPy’s np.abs() functioncomes to the rescue. In this art...
Ever felt lost trying to find the absolute value of a number in Python? Just like a compass guiding you through the wilderness, Python’s abs() function can help you find the absolute value. It’s a simple, yet powerful tool that can make your coding journey much smoother. This comprehen...
The abs() function is used to get the absolute (positive) value of a given number. The argument may be an integer or a floating point number. If the argument is a complex number, its magnitude is returned. Syntax: abs(x) Version: (Python 3) Parameter: If x is a complex number func...
❮ Built-in Functions ExampleGet your own Python Server Return the absolute value of a number: x =abs(-7.25) Try it Yourself » Definition and Usage Theabs()function returns the absolute value of the specified number. Syntax abs(n) ...
abs() 函数返回数字的绝对值,是python Builtins模块中的内置函数之一。 在python文件中直接可以使用,它的主要用途是获取数字的绝对值; 语法:abs(x) 参数:x–数值表达式 返回值: 函数返回x(数字,可以是正数,浮点数,复数)的绝对值,如果参数是一个复数,则返回它的大小。如果x定义了abs,abs(x)返回x。
>>> help(abs) Help on built-in function abs in module builtins: abs(x, /) Return the absolute value of the argument. >>> abs(2)#正整数 2 >>> abs(-2)#负整数 2 >>> abs(0)#0 0 >>> abs(2.3)#正浮点数 2.3 >>> abs(-2.3)#负浮点数 2.3 >>> c1 = complex(1,1) >>>...
以Python内置的abs()函数为例,调用函数: >>> abs(-19) # 函数调用 19 1. 2. 如果只写abs呢 >>> abs # 函数本身 <built-in function abs> 1. 2. 结果表明,abs是一个内置的函数,abs(-19)是函数调用,而abs是函数本身。 获取函数返回结果,可以把结果赋值给一个变量 ...
Python内置函数之数学函数---abs() 1.Python内置函数会组装成<builtin>内建模块,可以使用list(__builtin__.__dict__)或者dir(__builtin__)来列出所有的内置函数,如下: 从今天开始,会去学习使用这些基本的内置函数,并做记录,加强学习成果。 2. 首先从数学函数开始学习...
调用函数的时候,如果传入的参数数量不对,会报TypeError的错误,并且Python会明确地告诉你:abs()有且仅有1个参数,但你给出了两个 >>> help(abs) Help on built-in function abs in module builtins: abs(x, /) Return the absolute value of the argument. ...