python-Day6

一、shutil模块

shutil模块提供了大量的文件的高级操作。针对文件拷贝和删除，主要功能为目录和文件操作以及压缩操作。

copyfileobj
拷贝文件内容
copyfile
拷贝文件
copymode
拷贝权限，内容、组、用户均不变
copystat
拷贝状态的信息
copy
拷贝文件和权限
copy2
拷贝文件和状态信息
copytree
拷贝递归的去拷贝文件
rmtree
递归的去删除文件
move
递归的去移动文件
make_archive
创建压缩包并返回文件路径，zip&tar

二、shelve模块

是一个简单的k，v将内存数据通过文件持久化的模块，可持久化任何pickle可支持的python数据格式。

import shelve

d = shelve.open('shelve_test') #打开一个文件

class Test(object):
    def __init__(self,n):
        self.n = n


t = Test(123)
t2 = Test(123334)

name = ["alex","rain","test"]
d["test"] = name #持久化列表
d["t1"] = t      #持久化类
d["t2"] = t2

d.close()

三、loggin模块

用于日志管理，将日志进行记录、收集、输出、打印等。

import logging
'''
logging.warning('attempted wrong password')
logging.critical('server is down')

logging.basicConfig(filename='example.log',level=logging.INFO,format='%m/%d/%Y %I:%M:%S %p')
logging.debug('This message should go to the log file')
logging.info('So should this')
logging.warning('And this,too')
'''
logging.basicConfig(filename='example.log',level=logging.INFO,format='%(asctime)s %(message)s', datefmt='%m/%d/%Y %I:%M:%S %p')
logging.warning('is when this event was logged.')

四、类

1、继承

class SchoolMember(object):
    member_nums = 0
    def __init__(self,name,age,sex):
        self.name = name
        self.age = age
        self.sex = sex
        self.enroll()
    def enroll(self):
        print('SchoolMember [%s] is enrolled!' % self.name)
        SchoolMember.member_nums += 1
        print('The [%s] school member [%s] is enrolled!' % (self.member_nums,self.name))
    def tell(self):
        print('Hello,my name is %s' %self.name)

class Teacher(SchoolMember):
    def __init__(self,name,age,sex,course,salary):
        super(Teacher,self).__init__(name,age,sex)   #继承
        self.course = course
        self.salary = salary
    def teaching(self):
        print('Teacher [%s] is teaching [%s]'%(self.name,self.course))

class Student(SchoolMember):
    def __init__(self,name,age,sex,course,tuition):
        super(Student,self).__init__(name,age,sex)
        self.course = course
        self.tuition = tuition
    def pay_tuition(self):
        print('NND,student [%s] pay tuition [%s]' %(self.name,self.tuition))

t1 = Teacher('Jef',22,'F','Py',1000)
t2 = Teacher('Jia',3,'F','JS',2000)

s1 = Student('Jingjing',27,'M','Travel',10000)
s2 = Student('Doudou',5,'N/A','Eat',100)

t1.tell()
t1.teaching()
s1.tell()
s1.pay_tuition()