3]im[im <= 0.5] = 0im[im > 0.5] = 1pylab.gray()pylab.figure(figsize=(18,9))pylab.subplot(131)pylab.imshow(im)pylab.title('original', size=20)pylab.axis('off')for d in range(1,3): pylab.subplot(1,3,
3)) # print(data.shape) # Define the algorithm termination criteria (maximum number of iterations and/or required accuracy): # In this case the maximum number of iterations is set to 20 and epsilon
在Python 代码中,每个作用域(或者叫block或者名字空间)对应一个 PyCodeObject 对象, 所以会出现嵌套: 比如 一个 module 类 定义了 N 个 class, 每个 class 内又定义了 M 个方法. 每个 子作用域 对应的 PyCodeObject 会出现在它的 父作用域 对应的 PyCodeObject 的 co_consts 字段里。 .pyo pyo文件是源代码...
Inheritance allows us to define a class that inherits all the methods and properties from another class. Parent classis the class being inherited from, also called base class. Child classis the class that inherits from another class, also called derived class. ...
# constant memory and not crams it with a huge resized image for the large zooms. import random import tkinter as tk from tkinter import ttk from PIL import Image, ImageTk class AutoScrollbar(ttk.Scrollbar): ''' A scrollbar that hides itself if it's not needed. ...
Some commonly used decorators are even built-ins in Python, including @classmethod, @staticmethod, and @property. The @classmethod and @staticmethod decorators are used to define methods inside a class namespace that aren’t connected to a particular instance of that class. The @property decorator...
/* Methods */#defineOFF(x) offsetof(PyFunctionObject, x)staticPyMemberDef func_memberlist[] = { {"__closure__", T_OBJECT, OFF(func_closure), RESTRICTED|READONLY}, {"__doc__", T_OBJECT, OFF(func_doc), PY_WRITE_RESTRICTED}, ...
class PipePair(pygame.sprite.Sprite): """class that provides obstacles in the way of the bird in the form of pipe-pair.""" WIDTH = 80 HEIGHT_PIECE = 32 ADD_INTERVAL = 3000 在我们实际编写这个PipePair类之前,让我给你一些关于这个类的简洁信息,以便你能理解以下每个概念。我们将使用不同的属...
PHP中的常量分为自定义常量和系统常量(后续小节会详细介绍)。2、自定义常量是根据我们开发的需要,而定义的常量,它通过使用PHP中的函数define()定义。(注:函数,我们可以理解为一个混凝土搅拌机,亦或是一个筛子,通过入口提供原料,然后出口产出结果,在函数中也允许入...
from sqlalchemy import create_engine, Column, Integer, String from sqlalchemy.ext.declarative import declarative_base from sqlalchemy.orm import sessionmaker # Define a database model Base = declarative_base() class User(Base): __tablename__ = 'users' id = Column(Integer, primary_key=True)...