4、PIL Python Imaging Library(PIL)已经成为Python事实上的图像处理标准库了,这是由于,PIL功能非常强大,但API却非常简单易用。但是由于PIL仅支持到Python 2.7,再加上年久失修,于是一群志愿者在PIL的基础上创建了兼容的版本,名字叫Pillow,支持最新Python 3.x,...
Example: Python Library Function importmath# sqrt computes the square rootsquare_root = math.sqrt(4)print("Square Root of 4 is",square_root)# pow() comptes the powerpower = pow(2,3)print("2 to the power 3 is",power) Run Code Output Square Root of 4 is 2.0 2 to the power 3 is...
math.hypot(x, y) 返回欧几里得规范,sqrt(x*x + y*y)。这是从原点到点的矢量长度(x, y)。 math.sin(x) 返回x弧度的正弦值。 math.tan(x) 返回x弧度的切线。 4.角度转换 math.degrees(x) 将角度x从弧度转换为度数。 math.radians(x) 将角度x从度数转换为弧度。 5.双曲函数 math.acosh(x) 返回...
requirements.txt example requests==2.31.0 pandas>=2.0.0 numpy~=1.24.3 Platform-specific package managers: PlatformPackage ManagerCommand Example Windows pip/conda pip install package macOS Homebrew brew install python-package Linux apt/yum apt-get install python3-package Linux pip pip3 install packag...
Python offers themathmodule to carry out different mathematics like trigonometry, logarithms, probability and statistics, etc. For example, importmathprint(math.pi)print(math.cos(math.pi))print(math.exp(10))print(math.log10(1000))print(math.sinh(1))print(math.factorial(6)) ...
主要章节和小节重新按照如下逻辑划分: 一、Python基础 1 数字 2 字符串 3 列表 4 流程控制 5 编程风格 6 函数 7 输入和输出 8 数据结构 9 模块 10 错误和异常 11 类和对象 二、Python模块 1 时间模块 2 文件操作 3 常见迭代器 4 yield 用法 5 装饰
to import modules. For example, to import the math standard library, the methods include import math, from math import sin, and from math import *. The second of these three methods is slightly faster, and sin as can be the desired name according to the specific situation.4. For example...
# 1. Get the file path to an included audio example filename = librosa.example('nutcracker') # 2. Load the audio as a waveform `y` # Store the sampling rate as `sr` y, sr = librosa.load(filename) # 3. Run the default beat tracker ...
算法动态规划（Dynamic Programming）算法加密（Ciphers）算法数据结构（Data Structures）算法数学（Math）...
img=cv.imread('example.jpg')cv.imshow('Original',img)cv.waitKey()#Use cvtColor,to convert to grayscale gray_img=cv.cvtColor(img,cv.COLOR_BGR2GRAY)cv.imshow('Grayscale',gray_img)cv.waitKey(0) (2)旋转图像 OpenCV有助于使用从0到360度的任意角度旋转图像。