Python Base

Python Base

1.Time

Annoying Time Conversion

import time# unix time chuotime.time()# Time time.localtime()#########################a.unix time stamp#b.time object#c.string ##########################----------------------------#a=>btime.localtime(time.time())#----------------------------#----------------------------#b=>atime.mktime(time.localtime())#----------------------------#----------------------------#b=>cstring = time.strftime('%Y%m%D %H%M%S',time.localtime())#----------------------------#----------------------------#c=>btime.stfptime(string , '%Y%m%D %H%M%S')#----------------------------

2.random

import randomprint random.randint(0,5)random.random()用于生成一个0到1的随机符点数: 0 <= n < 1.0print random.uniform(10, 20)  print random.uniform(20, 10)  print random.randint(12, 20)  #生成的随机数n: 12 <= n <= 20  print random.randint(20, 20)  #结果永远是20 #从指定范围内，按指定基数递增的集合中 获取一个随机数random.randrange(10, 100, 2) print random.choice("学习Python")   print random.choice(["JGood", "is", "a", "handsome", "boy"])  print random.choice(("Tuple", "List", "Dict"))p = ["Python", "is", "powerful", "simple", "and so on..."]  random.shuffle(p)  print p 从指定序列中随机获取指定长度的片断。sample函数不会修改原有序列。list = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]  slice = random.sample(list, 5)  #从list中随机获取5个元素，作为一个片断返回  print slice  print list #原有序列并没有改变。  

3.java style’s python(no need but just for fun)

class DBFactory(object):    rds=RedisConnector.reuse()    __dayList=[]    __oneDayFile=[]    @property    def dayList(self):        return self.__dayList    @dayList.setter    def dayList(self,dlist):        self.__dayList=dlist    @property    def oneDayFile(self):        return self.__oneDayFile    @oneDayFile.setter    def oneDayFile(self,dlist):        self.__oneDayFile=dlist    @abstractmethod    def getTimes(self):        pass    @abstractmethod    def getLastDays(self):        pass    @abstractmethod    def check(self):        pass    @abstractmethod    def kdb_save(self):        passclass ModelSetting(DBFactory):    BASEDIR=MEDIA_ROOT+'/data_project/ModelSettings'    def __init__(self):        self.getLastDays()    def getLastDays(self):        daylist=sorted(os.listdir(self.BASEDIR))[-2:]        self.dayList=[os.path.join(self.BASEDIR,x)for x in daylist]        tmp=['/'.join([self.BASEDIR,x,'%s_model_settings_%s.csv'%(x,y)]) for x in daylist for y in ['day','night']]           self.oneDayFile=[x for x in tmp if os.path.exists(x)]     def kdb_save(self):        for x in self.oneDayFile:            print 'to db '            print x            write_model_setting(x)    def getTimes(self):        return map(os.path.getmtime,self.oneDayFile)    def check(self):         print "ModelSetting checking begin..."         rds_tmp=map(float,json.loads(self.rds.get('rss:modelsetting:checktime')))         cur_time=self.getTimes()           if not rds_tmp:             self.kdb_save()         if rds_tmp and cur_time!=rds_tmp:              self.kdb_save()         self.rds.set('rss:modelsetting:checktime',json.dumps(cur_time))class TradeLog(DBFactory):    BASEDIR=MEDIA_ROOT+'/data_project/TunnelLogs'    def __init__(self):       self.getLastDays()     def getLastDays(self):        '''get last 2 days return the list with 4 elems:'''        '''eg./mnt/Dataproject/TunnelLogs/20170322/Day'''        ModelSettingBaseDir =self.BASEDIR        self.dayList=sorted(os.listdir(ModelSettingBaseDir))[-2: ]                                                                                                                              daylist=map(lambda x: os.path.join(ModelSettingBaseDir, x,'Day'), self.dayList)        nightlist=map(lambda x: os.path.join(ModelSettingBaseDir, x,'Ngt'), self.dayList)        tmp=[]        self.dayList=daylist+nightlist        for folderpath in self.dayList:            if os.path.exists(folderpath):                tlist=[os.path.join(folderpath,x)for x in os.listdir(folderpath)]                tmp.append(tlist)        self.oneDayFile=tmp    def kdb_save(self):        for x in self.dayList:            print 'to db'            if os.path.exists(x):                print x                write_tunnel_log(x)    def getTimes(self):        timelist=[]        for x in self.oneDayFile:           timelist.append(map(os.path.getmtime,x))        return timelist    def check(self):         print "TradeLog checking begin..."         rds_tmp=json.loads(self.rds.get('rss:tunnel_log:checktime'))         cur_time=self.getTimes()         if not rds_tmp:            self.kdb_save()         if rds_tmp and cur_time!=rds_tmp:            self.kdb_save()         self.rds.set('rss:tunnel_log:checktime',json.dumps(cur_time))def run():    ms=ModelSetting()    ms.check()    ml=TradeLog()    ml.check()if __name__=="__main__":    run()

4.logging :python loggine demo

Demo1:

#encoding=utf-8import logginglogging.debug('This is debug message')logging.info('This is info message')logging.warning('This is warning message')

Demo2:

#import logging##logging.basicConfig(level=logging.DEBUG,#                format='%(asctime)s %(filename)s[line:%(lineno)d] %(levelname)s %(message)s',#                datefmt='%a, %d %b %Y %H:%M:%S',#                filename='myapp.log',#                filemode='w')#    #logging.debug('This is debug message')#logging.info('This is info message')#logging.warning('This is warning message')

Demo3:

#log.pyimport logginglogging.basicConfig(level=logging.DEBUG,                format='%(asctime)s %(filename)s[line:%(lineno)d] %(levelname)s %(message)s',                datefmt='%a, %d %b %Y %H:%M:%S',                filename='myapp.log',                filemode='w')##################################################################################################定义一个StreamHandler，将INFO级别或更高的日志信息打印到标准错误，并将其添加到当前的日志处理对象#console = logging.StreamHandler()console.setLevel(logging.INFO)formatter = logging.Formatter('%(name)-12s: %(levelname)-8s %(message)s')console.setFormatter(formatter)logging.getLogger('').addHandler(console)#################################################################################################logging.debug('This is debug message')logging.info('This is info message')logging.warning('This is warning message')#test.pyfrom log import logginglogging.debug('This is debug message')logging.info('This is info message')logging.warning('This is warning message')

4.simple Test Demo: English reading.(just for fun)

#urlget.pyfrom lxml import etree url="http://www.dioenglish.com/home.php?mod=space&uid=114322&do=blog&id=55535"xp = '//div[@id="blog_article"]'def get(url,xp):    t = urllib.urlopen(url).read()    sele = etree.HTML(t)    #content = sele.xpath('//div[@id="blog_article"]/p/span/font/text()')    if xp[-2:] =='()':            info = sele.xpath(xp)       else:       content = sele.xpath(xp)       info = content[0].xpath('string(.)').encode('utf-8')    return info------------------------------------------------------#main.pyfrom urlget import getfrom textwrap import wrapimport urlgett = get(urlget.url,urlget.xp)t = get('http://www.dioenglish.com/home.php?mod=space&uid=27677&do=blog&id=55547',urlget.xp)tt=wrap(t,100)t=[]for i in range(len(tt)):   t.append("\033[1;31;43m%d\033[0m  %s"%(i,tt[i]))print t[0]def l1():    for x  in t: yield xdef l2():    for x  in reversed(t): yield xc1=l1()c2=l2()def get(i,c):    try:      ss=[]      for x in range(i):        ss.append(c.next())    except StopIteration:        pass    return ss##print get(4,c2)#print get(4,c2)#print get(4,c2)#while True:    st = raw_input(">")    print repr(st)    if st in ['n','']:        print '\n'.join(get(4,c1))    if st == 'l':        print '\n'.join(reversed(get(4,c2)))    if st =='g 0':            c1=l1()         print '\n'.join(get(4,c1))

5.pacakge:without test

#sys.path.append('../')#sys.path.append('../agentproxy/')#sys.path.append('../site/')from agentproxy.rewrite_kdb import write_tunnel_logfrom agentproxy.rewrite_kdb import write_model_setting