>>>basket = ['apple','orange','apple','pear','apple','banana'] >>>fruit=set(basket) >>>fruit set(['orange', 'pear', 'apple', 'banana']) >>>'orange' in fruit True >>>a=set('abracadabew') >>>a set(['a', 'c', 'b', 'e', 'd', 'r', 'w']) >>>b=set('wajgwaoihwb') >>>b set(['a', 'b', 'g', 'i', 'h', 'j', 'o', 'w']) >>>a-b #差 set(['c', 'r', 'e', 'd']) >>>a|b #并 set(['a', 'c', 'b', 'e', 'd', 'g', 'i', 'h', 'j', 'o', 'r', 'w']) >>>a&b #交 set(['a', 'b', 'w']) >>>a^b #(并-交) set(['c', 'e', 'd', 'g', 'i', 'h', 'j', 'o', 'r'])
只启动一个进程 lockfp = file("/home/atlantis/trans2hadoop/mod.lck","w”) fcntl.flock(lockfp.fileno(),fcntl.LOCK_EX | fcntl.LOCK_NB)
>>> a = [11,22,33,44,11,22] >>> b = set(a) >>> b set([33, 11, 44, 22]) >>> c = [i for i in b] >>> c [33, 11, 44, 22]
[(1,), (2,), (3,)] 如何转为 [1, 2, 3]？
a = [(1,), (2,), (3,)] [tuple(i)[0] for i in a]
python -m SimpleHTTPServer 8888
#/bin/env python #coding:utf-8 import socket,select,sys,time import thread s_list = [] def loop(cs,addr,s_ip,s_port): print '%s %d connected.' % addr ts = socket.socket() try: ts.connect((s_ip,s_port)) except: cs.close() print '%s %d closed.' % addr sys.exit(0) while True: rl,wl,xl = select.select([cs.fileno(),ts.fileno()],[],[cs.fileno(),ts.fileno()]) if len(xl) > 0: cs.close() ts.close() print '%s %d closed.' % addr sys.exit(0) if len(rl) > 0: if rl[0] == cs.fileno(): rs = ts ws = cs else: rs = cs ws = ts try: buffer = ws.recv(10000) if len(buffer) == 0: raise rs.send(buffer) except: rs.close() ts.close() print '%s %d closed.' % addr sys.exit(0) def mainserver(l_port,s_ip,s_port): global s_list try: ss = socket.socket() ss.bind(('0.0.0.0',l_port)) ss.listen(10) s_list.append((l_port,s_ip,s_port)) except: sys.exit(0) while True: cs,addr = ss.accept() thread.start_new_thread(loop,(cs,addr,s_ip,s_port)) def manager(l_port): global start,s_list ss = socket.socket() ss.bind(('0.0.0.0',l_port)) ss.listen(10) while True: cs,addr = ss.accept() cs.send("""trans server 1.0\r\ntype 'help' to get help\r\n""") buffer = '' while True: buf = cs.recv(10000) if len(buf) == 0: cs.close() break if buf[-1] not in ('\r','\n'): buffer += buf continue buffer += buf cmd = buffer.strip() buffer = '' if cmd == 'exit': cs.close() break elif cmd == 'stop': start = 0 cs.close() sys.exit(0) elif cmd == 'list': b = '' for l in s_list: b += '%4d %s:%d\r\n' % l if len(b) > 0: cs.send(b) elif cmd in ('help','?'): cs.send("""-------------------------------------------\r exit\r exit telnet\r start localport serverip:serverport\r start a new server\r list\r list all server\r -------------------------------------------\r """) else: cmds = cmd.split(" ",1) if len(cmds) > 1 and cmds[0] == 'start': args = cmds[1].strip().split(" ",1) if len(args) != 2: cs.send('start localport serverip:serverport\r\n') continue arg = args[1].split(":",1) if len(arg) != 2: cs.send('start localport serverip:serverport\r\n') continue try: l_port = int(args[0]) s_ip = arg[0] s_port = int(arg[1]) except: cs.send('start localport serverip:serverport\r\n') continue thread.start_new_thread(mainserver,(l_port,s_ip,s_port)) cs.send('start OK!\r\n') else: cs.send('no command [%s]\r\n' % cmd) continue def main(): global start if len(sys.argv) == 3: try: l_port = int(sys.argv[1]) s_ip,s_port = sys.argv[2].split(":") s_port = int(s_port) thread.start_new_thread(mainserver,(l_port,s_ip,s_port)) except: pass start = 1 thread.start_new_thread(manager,(9000,)) while start: time.sleep(1) if __name__ == '__main__': start = 0 main()
>>> import datetime >>> named_month = lambda month_num:datetime.date(1900,month_num,1).strftime('%B') >>> print named_month(5) 'May'
>>>import socket >>>print socket.gethostbyname(socket.gethostname()) #windows版和mac版相同
#!/usr/bin/env python # -*- coding: utf8 -*- #包含收件人列表，一行一个地址，保存为list.txt #群发邮件内容，保存为mail.eml import smtplib import time from email.MIMEBase import MIMEBase from email.MIMEText import MIMEText from email.MIMEMultipart import MIMEMultipart import email #邮件发送服务器地址 smtp_server = '127.0.0.1' #发件人地址 from_usr = 'test@abc.com' #邮件标题 title = 'Test Mail' #发一封歇息多久 delay = 0.1 #smtp服务器是否需要验证 #需要验证为1不需要为0 auth = 0 #如果需要验证，请在下面输入用户名和密码 log_usr="" log_passwd="" def gingerMail(smtp_server,from_usr,to_usr,title,msg,auth,log_usr,log_passwd): server = smtplib.SMTP(smtp_server) # server.set_debuglevel(1) if auth == 1: server.login(log_usr,log_passwd) subject= to_usr.split('@')[0]+', Look this: '+title msg.replace_header('Subject',email.Header.Header(subject, 'utf-8')) msg.replace_header('Date',time.ctime()) msg.replace_header('From',from_usr) msg.replace_header('To',to_usr) server.sendmail(from_usr, to_usr, msg.as_string()) server.quit() f_list='list.txt'; fp=open('mail.eml','r') msg=email.message_from_file(fp) fp.close() try: f=open(f_list,'r') lines=f.readlines() #邮件计数变量 cnt = 0 for line in lines: to_usr = line.strip() cnt = cnt + 1 gingerMail(smtp_server,from_usr,to_usr,title,msg,auth,log_usr,log_passwd) print "Email No." + str(cnt) + " has been sent to: " + to_usr + "" time.sleep(delay) f.close() print "......All Finished!!!" except IOError msg: print 'error:', msg[0]
################################################################################ ############## # SpaceFinder.py v.1 07/01/2004 # Plagerized from many sources by: triggernum5 # If you see your code in here, then by all means claim the credit # Use: Enter the name of the root directory you wish scanned in the name field on line #67 # Press White button to view output. # Notice: May take a while when run on huge directories # Future versions will incorporate a browsing interface, and directory depth options. # For now please bear in mind that I began stealing this code today ################################################################################ ############## import os listG = [] def GetTotalFileSize(dummy_param, directory, list_of_files): '''Given a list of files and the directory they're in, add the total size and directory name to the global list listG. ''' global listG currdir = os.getcwd() os.chdir(directory) total_size = 0 if len(list_of_files) != 0: for file in list_of_files: if file == ".." or file == ".": continue try: size = os.path.getsize(file) total_size = total_size + size except: continue listG.append([total_size, directory]) os.chdir(currdir) def GetSize(directory): '''Returns a list of the form [ [a, b], [c, d], ... ] where a, c, ... are the number of total bytes in the directory and b, d, ... are the directory names. The indicated directory is recursively descended and the results are sorted by directory size with the largest directory at the beginning of the list. ''' import os global listG listG = [] os.path.walk(directory, GetTotalFileSize, "") listG.sort() listG.reverse() def ShowBiggestDirectories(directory): import regsub GetSize(directory) # Get total number of bytes total_size = 0 for dir in listG: total_size = total_size + dir[0] if total_size != 0: print "For directory '%s': " % directory, print "[total bytes = %.1f MB]" % (total_size / (1024.0*1024)) print "Size - Directory Name" print "" print "---------------- " + "-" * 50 not_shown_count = 0 for dir in listG: dirsize = dir[0] / (1024*1024) dir[0] = 100.0 * dir[0] / total_size dir[1] = regsub.gsub("\\\\", "/", dir[1]) print "%6.1fMB %s" % (dirsize, dir[1]) if __name__ == '__main__': import sys name = 'f:\\games\\' ShowBiggestDirectories(name)