['Error', 'Incomplete', 'b2a_hex', 'hexlify' #Hexadecimal representation of binary data. 字符串转16进制'a2b_hex', 'unhexlify', #Binary data of hexadecimal representation 16进制转字符串'b2a_base64', #Base64-code line of data. base64加密'a2b_base64', #Decode a line
@2019-01-18 [小记] rt-thread中动态内存分配之小内存管理模块方法的一点理解 > 内存初始化后的布局示意 lfree指向内存空闲区首地址 /** * @ingroup SystemInit * * This function will initialize system heap memory. * * @param begin_addr the beginning address of system heap memory. * @param end_addr the en
binascii模块拿来干嘛的? 答:进制转换xxoo #!/usr/bin/env python # encoding:utf-8 # by i3ekr import binascii s = "abcd" a = binascii.b2a_hex(s)#字符串转十六进制 b = binascii.a2b_hex(a)#十六进制转字符串 print a,b c = binascii.b2a_base64(s)#base64加密 d = binascii.a2b_base64(c)#b
模块方法模式是行为模式之一,它把具有特定步骤算法中的某些必要的处理委让给抽象方法,通过子类继承对抽象方法的不同实现改变整个算法的行为. UML图: 具体代码: /** * 抽象-模块方法模式核心 */ public abstract class AbstractPage { public abstract void makeHeader();//组装页面头部 public abstract void makeBody();//组装页面body public abstract void makeF
官方解释: os: This module provides a portable way of usingoperating system dependent functionality. 翻译:提供一种方便的使用操作系统函数的方法. sys:This module provides access to some variablesused or maintained by the interpreter and to functions that interact stronglywith
1.random(self): Get the next random number in the range [0.0, 1.0) 取0到1直接的随机浮点数 import random print(random.random()) C:\python35\python3.exe D:/pyproject/day21模块/random随机模块.py 0.3105503800442595 2.randint(self, a, b) Return random integer in range [a