标签：
高级的 文件、文件夹、压缩包 处理模块
shutil.copyfileobj(fsrc, fdst[, length])
功能：将文件内容拷贝到另一个文件中，可以部分内容
shutil.copyfile(src, dst)
功能：仅拷贝文件
shutil.copymode(src, dst)
功能：仅拷贝权限，内容、组、用户均不变
shutil.copystat(src, dst)
功能：拷贝状态的信息，包括：mode bits, atime, mtime, flags
shutil.copy(src, dst)
功能：拷贝文件和权限
shutil.copy2(src, dst)
功能：拷贝文件和状态信息
1. zipfile
2. tarfile
二次封装pickle模块功能，对比pickle而言，shelve实现了按照‘键’来取值
示例：
import shelve
name = [‘swht‘,‘shen‘,‘test‘]
class Test(object):
def __init__(self,n):
self.n = n
t1 = Test(1234)
t2 = Test(123456)
#存数据
shelve_file = shelve.open(‘ret.txt‘)
shelve_file[‘use‘] = name
shelve_file[‘t1‘] = t1
shelve_file[‘t2‘] = t2
shelve_file.close()
#取数据
shelve_load = shelve.open(‘ret.txt‘)
a = shelve_load.get(‘use‘)
print(a)
b = shelve_load.get(‘t1‘)
print(b.n)
c = shelve_load.get(‘t2‘)
print(c.n)
shelve_load.close()
示例：
import configparser
#生成文档
#["DEFAULT"]是一个全局模块，对所有的模块生效
config = configparser.ConfigParser()
config["DEFAULT"] = {‘ServerAliveInterval‘: ‘45‘,
‘Compression‘: ‘yes‘,
‘CompressionLevel‘: ‘9‘}
config[‘bitbucket.org‘] = {}
config[‘bitbucket.org‘][‘User‘] = ‘hg‘
config[‘topsecret.server.com‘] = {}
topsecret = config[‘topsecret.server.com‘]
topsecret[‘Host Port‘] = ‘50022‘ # mutates the parser
topsecret[‘ForwardX11‘] = ‘no‘ # same here
config[‘DEFAULT‘][‘ForwardX11‘] = ‘yes‘
with open(‘example.ini‘, ‘w‘) as configfile:
config.write(configfile)
#查询
config = configparser.ConfigParser()
config.read(‘example.ini‘)
print(config.sections()) #[‘bitbucket.org‘, ‘topsecret.server.com‘]
if ‘bitbucket.org‘ in config:
print(‘True‘)
print("[‘bitbucket.org‘][‘User‘]:",config[‘bitbucket.org‘][‘User‘])
print("[‘bitbucket.org‘][‘Compression‘]:",config[‘bitbucket.org‘][‘Compression‘])
for key in config[‘bitbucket.org‘]:
print(key)
#读
config = configparser.ConfigParser()
config.read(‘example.ini‘)
secs = config.sections()
print(secs) #[‘bitbucket.org‘, ‘topsecret.server.com‘]
options = config.options(‘topsecret.server.com‘)
print(options) #[‘host port‘, ‘forwardx11‘, ‘compression‘, ‘serveraliveinterval‘, ‘compressionlevel‘]
item_list = config.items(‘bitbucket.org‘)
print(item_list) #[(‘compression‘, ‘yes‘), (‘serveraliveinterval‘, ‘45‘), (‘compressionlevel‘, ‘9‘), (‘forwardx11‘, ‘yes‘), (‘user‘, ‘hg‘)]
val = config.get(‘bitbucket.org‘,‘compression‘)
print(val)
#改写
config = configparser.ConfigParser()
config.read(‘example.ini‘)
#实现从原来的文件中读取，删除[bitbucket.org]模块后将其他内容写到example_new.ini文件中
# sec = config.remove_section(‘bitbucket.org‘)
# config.write(open(‘example_new.ini‘, "w"))
#添加[swht]模块
# sec = config.has_section(‘swht‘)
# sec = config.add_section(‘swht‘)
# config.write(open(‘example_new1.ini‘, "w"))
该模块提供了多个算法对字符串进行加密操作。
示例代码：
import hashlib #md5加密 md5num = hashlib.md5() md5num.update(b"shendiaoxia1278@sohu.com") print(md5num.hexdigest()) #7e023c9fafc96423da854e4923f466a1 #sha1加密 sha1num = hashlib.sha1() sha1num.update(b"shendiaoxia1278@sohu.com") print(sha1num.hexdigest()) #dd8d5deaa16c2dde03785aac99943f8f75bfaba9 #sha256加密 hash = hashlib.sha256() hash.update(b"shendiaoxia1278@sohu.com") print(hash.hexdigest()) #14b03e2271da2cc9b0cc3ff73727c6d3ba6ba17077470a92162f7b46c9d1d968 #sha384加密 hash = hashlib.sha384() hash.update(b"shendiaoxia1278@sohu.com") print(hash.hexdigest()) #a27bbc0d66d6b8b00a7ebfcad662ebed385fe2098898dfe23b88ffa88e1b6565d82e7eee5c9950c90231d0c0aa286e00 #sha512加密 hash = hashlib.sha512() hash.update(b"shendiaoxia1278@sohu.com") print(hash.hexdigest()) #42bb1886bba49373c8f8177fba32a58a1f31af7272219789db52776428789f4a39970da9a36fdef6ab76651ed9f07e0fa140e4fa7dd325cb52559389bb80ceab
高级加密代码
1. python2.7
import subprocess
#默认状态shell = False，必须使用一个列表的方式将shell命令传递进去
ret = subprocess.call(["ls", "-l"], shell=False)
#使用shell = True告诉subprocess模块对用户传入的shell命令不转义，即使用原生shell命令
ret = subprocess.call("ls -l", shell=True)
2. python3.5
示例：
import logging
# logging.warning("user [swht] is start the systerm!")
# logging.critical("server is down!")
#创建日志
logger = logging.getLogger(‘[Test-Log]‘)
logger.setLevel(logging.DEBUG)
#创建一个控制台的handler并设置日志级别
ch = logging.StreamHandler()
ch.setLevel(logging.DEBUG)
#创建一个文件的handler并设置日志级别
fh = logging.FileHandler("access.log")
fh.setLevel(logging.WARNING)
#创建日期格式
fomatter = logging.Formatter(‘%(asctime)s %(name)s %(levelname)s %(message)s‘,datefmt=‘%Y-%m-%d %H:%M:%S‘)
#add formatter to ch and fh
ch.setFormatter(fomatter)
fh.setFormatter(fomatter)
logger.addHandler(ch)
logger.addHandler(fh)
# ‘application‘ code
logger.debug(‘debug message‘)
logger.info(‘info message‘)
logger.warn(‘warn message‘)
logger.error(‘error message‘)
logger.critical(‘critical message‘)
#输出格式：
2016-02-20 16:53:27 [Test-Log] DEBUG debug message
2016-02-20 16:53:27 [Test-Log] INFO info message
2016-02-20 16:53:27 [Test-Log] WARNING warn message
2016-02-20 16:53:27 [Test-Log] ERROR error message
2016-02-20 16:53:27 [Test-Log] CRITICAL critical message
1. 不要写重复的代码
2. 代码易扩展，程序遵循易读、易改的原则
1. 封装
2. 继承
1. 基类或父类或超类
2. 子类或派生类
一般情况下，一个子类只能有一个基类，但在python中，一个子类是可以继承多个基类，实现多重继承，可以通过多级继承来实现；继承的过程就是从一般到特殊的过程
3. 多态
实现接口的重用
类 class
示例：
class Role(object):
def __init__(self,name,role,weapon,life_value):
self.name = name
self.role = role
self.weapon = weapon
self.life_value = life_value
def buy_weapon(self,weapon):
self.weapon = weapon
print("%s 成功购买[%s]" % (self.name,weapon))
#实例化
p1 = Role(‘swht‘,‘p‘,‘A11‘,100)
t1 = Role(‘shen‘,‘t‘,‘A11‘,100)
print("p1[weapon]初始值:",p1.weapon)
print("t1[weapon]初始值:",t1.weapon)
#买枪行为
p1.buy_weapon("AB")
t1.buy_weapon("AK")
print("p1[weapon]当前值:",p1.weapon)
print("t1[weapon]当前值:",t1.weapon)
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原文地址：http://www.cnblogs.com/python3/p/5244500.html
