python-Day6

Posted 2020-06-18

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。

 1 import shelve
 2 
 3 d = shelve.open(‘shelve_test‘) #打开一个文件
 4 
 5 class Test(object):
 6     def __init__(self,n):
 7         self.n = n
 8 
 9 
10 t = Test(123)
11 t2 = Test(123334)
12 
13 name = ["alex","rain","test"]
14 d["test"] = name #持久化列表
15 d["t1"] = t      #持久化类
16 d["t2"] = t2
17 
18 d.close()

shelve

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.‘)

logging

四、类

1、继承

 1 class SchoolMember(object):
 2     member_nums = 0
 3     def __init__(self,name,age,sex):
 4         self.name = name
 5         self.age = age
 6         self.sex = sex
 7         self.enroll()
 8     def enroll(self):
 9         print(‘SchoolMember [%s] is enrolled!‘ % self.name)
10         SchoolMember.member_nums += 1
11         print(‘The [%s] school member [%s] is enrolled!‘ % (self.member_nums,self.name))
12     def tell(self):
13         print(‘Hello,my name is %s‘ %self.name)
14 
15 class Teacher(SchoolMember):
16     def __init__(self,name,age,sex,course,salary):
17         super(Teacher,self).__init__(name,age,sex)   #继承
18         self.course = course
19         self.salary = salary
20     def teaching(self):
21         print(‘Teacher [%s] is teaching [%s]‘%(self.name,self.course))
22 
23 class Student(SchoolMember):
24     def __init__(self,name,age,sex,course,tuition):
25         super(Student,self).__init__(name,age,sex)
26         self.course = course
27         self.tuition = tuition
28     def pay_tuition(self):
29         print(‘NND,student [%s] pay tuition [%s]‘ %(self.name,self.tuition))
30 
31 t1 = Teacher(‘Jef‘,22,‘F‘,‘Py‘,1000)
32 t2 = Teacher(‘Jia‘,3,‘F‘,‘JS‘,2000)
33 
34 s1 = Student(‘Jingjing‘,27,‘M‘,‘Travel‘,10000)
35 s2 = Student(‘Doudou‘,5,‘N/A‘,‘Eat‘,100)
36 
37 t1.tell()
38 t1.teaching()
39 s1.tell()
40 s1.pay_tuition()

继承