2014年十一月月 发布的文章

[Python]脚本 mysql+web文件备份

由于担心服务器数据安全,所以写了这个脚本,结合前边分享的Server/Client 文件互传,可以备份网站数据到本地,安全又可靠

#!/usr/bin/python
# Filename: webbak.py
import os
import time
import tarfile

os.chdir('/home/web/') #切换目录
source = 'leonis'
bakdir = '/home/web/leonis/'
# mysql dump 
dump = 'mysqldump'
dbuser = 'XXXXXXX'
dbpwd = 'XXXXXXXXXXX'
dbname = 'XXXXXXXX'
sqlfile = '/home/web/leonis/leonis.sql'
sql = "%s -u%s -p%s %s >  %s" % (dump,dbuser,dbpwd,dbname,sqlfile) 
if os.path.exists(sqlfile):  
    os.remove(sqlfile)
else:
    print 'then will dump sql file'
result = os.popen(sql)
if result:              #
	print ("SQL backup completed!")
else:
	print ("SQL backup failed!")
# gzip 压缩 以当日日期命名
filename = bakdir + time.strftime('%Y%m%d')+'.tar.gz'
tar = tarfile.open(filename,"w:gz")
tar.add(source)
tar.close()

[python]学习笔记:字符串

Python学习笔记:字符串
startswith 检测开头
示例:

1. a = 'leonis'
if a.startswith('le’):
print ‘le’

endswith 检测结尾
示例:

1. a = ‘leonis'
if a.endswith(‘is’):
print ‘is’

in 检测是否为其中一部分
示例:

1. a = ‘leonis’
if ‘o’ in a:
print ‘a’

find 查询包含
示例:

1. a= ‘leonis’
if a.find(‘on’) != -1:
print(‘on’)

join 连接字符串
示例:

1. a = ' '
mylist = ['Brazil','Russia','India','China']
print a.join(mylist)
2. mylist = ['Brazil','Russia','India','China’]
print ‘_’.join(mylist)

split 拆分字符串

1. b = 'my..name..is..leonis’
print b
print b.split('..’)
2. b = ‘my..name..is..leonis’
print b
print b.split(‘..’,1)

[分享]用python实现简单Server/Client文件传输

最近在学习python,由于需要备份服务器上的文件,又不想用第三方的,打算自己写个,百度了下发现个不错的脚本,分享学习下

服务器端:

#!/usr/bin/python
import SocketServer, time
class MyServer(SocketServer.BaseRequestHandler):
userInfo = {
'leonis' : 'leonis',
'hudeyong' : 'hudeyong',
'mudan' : 'mudan' }
def handle(self):
print 'Connected from', self.client_address
while True:
receivedData = self.request.recv(8192)
if not receivedData:
continue
elif receivedData == 'Hi, server':
self.request.sendall('hi, client')
elif receivedData.startswith('name'):
self.clientName = receivedData.split(':')[-1]
if MyServer.userInfo.has_key(self.clientName):
self.request.sendall('valid')
else:
self.request.sendall('invalid')
elif receivedData.startswith('pwd'):
self.clientPwd = receivedData.split(':')[-1]
if self.clientPwd == MyServer.userInfo[self.clientName]:
self.request.sendall('valid')
time.sleep(5)
sfile = open('down.sh', 'rb')
while True:
data = sfile.read(1024)
if not data:
break
while len(data) > 0:
intSent = self.request.send(data)
data = data[intSent:]
time.sleep(3)
self.request.sendall('EOF')
else:
self.request.sendall('invalid')
elif receivedData == 'bye':
break
self.request.close()
print 'Disconnected from', self.client_address
print
if __name__ == '__main__':
print 'Server is started\nwaiting for connection...\n'
srv = SocketServer.ThreadingTCPServer(('ip', 50000), MyServer)
srv.serve_forever()

客户端:

import socket, time
class MyClient:
def __init__(self):
print 'Prepare for connecting...'
def connect(self):
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.connect(('ip', 50000))
sock.sendall('Hi, server')
self.response = sock.recv(8192)
print 'Server:', self.response
self.s = raw_input("Server: Do you want get the 'thinking in python' file?(y/n):")
if self.s == 'y':
while True:
self.name = raw_input('Server: input our name:')
sock.sendall('name:' + self.name.strip())
self.response = sock.recv(8192)
if self.response == 'valid':
break
else:
print 'Server: Invalid username'
while True:
self.pwd = raw_input('Server: input our password:')
sock.sendall('pwd:' + self.pwd.strip())
self.response = sock.recv(8192)
if self.response == 'valid':
print 'please wait...'
f = open('down.sh', 'wb')
while True:
data = sock.recv(1024)
if data == 'EOF':
break
f.write(data)
f.flush()
f.close()
print 'download finished'
break
else:
print 'Server: Invalid password'
sock.sendall('bye')
sock.close()
print 'Disconnected'
if __name__ == '__main__':
client = MyClient()
client.connect()

原文地址:http://yangsq.iteye.com/blog/129380