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Example

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#!/usr/bin/env python
# -*- coding: utf-8 -*-
import sys
import os

def daemon():
""" A demo daemon main routine, write a datestamp to
/tmp/daemon-log every 10 seconds.
"""
import time
f = open("/tmp/daemon-log", "w")
while 1:
f.write('%s\n' % time.ctime(time.time()))
f.flush()
time.sleep(10)
if __name__ == "__main__":
# do the UNIX double-fork magic, see Stevens' "Advanced
# Programming in the UNIX Environment" for details (ISBN 0201563177)
try:
pid = os.fork()
if pid > 0:
# exit first parent
sys.exit(0)
except OSError, e:
print >>sys.stderr, "fork #1 failed: %d (%s)" % (e.errno, e.strerror)
sys.exit(1)
# decouple from parent environment
os.chdir("/")
os.setsid()
os.umask(0)
# do second fork
try:
pid = os.fork()
if pid > 0:
# exit from second parent, print eventual PID before
print "Daemon PID %d" % pid
sys.exit(0)
except OSError, e:
print >>sys.stderr, "fork #2 failed: %d (%s)" % (e.errno, e.strerror)
sys.exit(1)
# start the daemon main loop
daemon()
编辑
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标题

使用标题有两种方法,第一种是使用 “#” 开头,第二种是打完文字后在下一行加上 “==” :

使用 “#”

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#第一层标题
##第二层标题
###第三层标题
####第四层标题
#####第五层标题

使用 “==”

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第一层标题
==
第二层标题
--

强调

在这边会有三种强调的方式

斜体,使用 “*” 或 “_” 将文字包起来

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###

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import random, string

def random_string(length=8):
all_letters = list(string.ascii_letters+string.digits)
random_str = []
for i in range(length):
index = random.sample(range(0,62), 1)[0]
random_str = ''.join([random_str, all_letters[index]])
return random_str


if __name__ == '__main__':
print random_string(20)
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Simple usage

Example

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#!/usr/bin/python
# -*- coding: UTF-8 -*-

import threading
import time

exitFlag = 0

class myThread (threading.Thread): #继承父类threading.Thread
def __init__(self, threadID, name, counter):
threading.Thread.__init__(self)
self.threadID = threadID
self.name = name
self.counter = counter
def run(self): #把要执行的代码写到run函数里面 线程在创建后会直接运行run函数
print "Starting " + self.name
print_time(self.name, self.counter, 5)
print "Exiting " + self.name

def print_time(threadName, delay, counter):
while counter:
if exitFlag:
thread.exit()
time.sleep(delay)
print "%s: %s" % (threadName, time.ctime(time.time()))
counter -= 1

# 创建新线程
thread1 = myThread(1, "Thread-1", 1)
thread2 = myThread(2, "Thread-2", 2)

# 开启线程
thread1.start()
thread2.start()

print "Exiting Main Thread"
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Simple usage

终端打印

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import logging

logging.warning('Watch out!') # will print a message to the console
logging.info('I told you so') # will not print anything
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$ sudo mkdir ~/.pip
$ vim ~/.pip/pip.conf


[global]
index-url = http://pypi.douban.com/simple/
trusted-host = pypi.douban.com

grinning all the time

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安装

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pip install ConfigParser

使用

生成配置文件

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import ConfigParser

config = ConfigParser.RawConfigParser()

# When adding sections or items, add them in the reverse order of
# how you want them to be displayed in the actual file.
# In addition, please note that using RawConfigParser's and the raw
# mode of ConfigParser's respective set functions, you can assign
# non-string values to keys internally, but will receive an error
# when attempting to write to a file or when you get it in non-raw
# mode. SafeConfigParser does not allow such assignments to take place.
config.add_section('Section1')
config.set('Section1', 'an_int', '15')
config.set('Section1', 'a_bool', 'true')
config.set('Section1', 'a_float', '3.1415')
config.set('Section1', 'baz', 'fun')
config.set('Section1', 'bar', 'Python')
config.set('Section1', 'foo', '%(bar)s is %(baz)s!')

with open('example.conf', 'wb') as configfile:
config.write(configfile)
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grinning all the time

😄 😄 😄 😄 😄 😄 😄 😄 😄 😄 😄 😄 😄 😄 😄 😄 😄 😄 😄 😄 😄

首先确认服务器出于安全的状态,也就是没有人能够任意地连接MySQL数据库。 因为在重新设置MySQL的root密码的期间,MySQL数据库完全出于没有密码保护的 状态下,其他的用户也可以任意地登录和修改MySQL的信息。可以采用将MySQL对外的端口封闭,并且停止Apache以及所有的用户进程的方法实现服务器的准安全状态。最安全的状态是到服务器的Console上面操作,并且拔掉网线

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