python:
ASCII,unicode,utf-8 :
pythoncoding:utf8:
\033[;;m*******\033[0m
:
‘‘‘ ‘‘‘
:
if elif else
for i in range(n,m,k)[n,m-1,k]
break continue pass
chr()[ASCII] ord()[ASCII]
while else
:
a,b = 1,2
max = (a if a>b else b)
python -:
:
:
s[0] ::0;:-1:
s[n:m:k]:cong
:
type() #:
%d%i %f %s %% %
:
int():float():str()::
s.find(t):t,,-1.
s.index(t):t,.
s.join(ls):sls.
s.replace(old,new):.
s.split(sep):sep,s.strip(t):t
s.startswith(t):t:true :false
s.endswith():zit:true :false
s.isalnum():s.isalpha() :s.isdigit() :s.isupper():s.islower():s.upper():s.lower():s.swapcase():s.count(t):t:
:
:::,,:
:[]
:list():list(string)::
append(string):extend(s):()
insert(n,string):,pop():,..
remove():count():index():reverse():sort():len():max():min()::,,‘+‘‘*‘:
pythonlist.
[ x*x for x in range(1,11)]
:X*X :for:,,.
:
:()
:tuple()
:
;
;
:,,:
a = (1,2,3)
for i,j in enumerate(a):
print i,j
:
index():count():.
python:
:,.
::::
:{key1:value1,key2:value2,...}
:dict():":";
",";
,/
:
:dict1[key] = value
items()::,.
keys():values():has_key():.
del :len():update():,get():pop():popitem():clear()::
for key in data:
print key,data[key]
:
1.,2.3.4.5.,6.set
:{}
:set()
:
len():add():remove():update(): pop():s|t: st s&t: st s-t: ,sts^t: pythonopen(‘file_name‘,‘r|w|a‘),file(‘file_name‘,‘r|w|a‘):,with :with open(‘file_name‘,‘r|w|a‘) as fileName:
:open(,)
r:,,.
w:(),,a:(),,+:aa
a+:,w+:,a+r+:,a+:
readline():readlines():read():,tell():()
seek():seek(,)
write():writelines():flush():,close():mode:name:closed::
function def
def ()
python.
,.
pythondef,.
,,,python.
pythonreturn,,.
return,NONE,return,return ,NONE.
:
()
python,,(),def,(),.
:
:
:()
python,,,.
,.
:()
,global.
:
,"name=value".
python.
,,.
:,‘name=value‘.(,.)
.
,,,.
:
*args,,,*args.
**kwargs,,**,"name=value",.
:
:,.,;
lambda:
,,def.
lambda,,,,.
lambda.
map()
,.
lambdamapmap(lambda x:x**5,range(10))
enumerate:
yield:
generator()
yield,Pythongenerator
:
.
@:run = login(run)
:
,..py
,,.
if __name__ == ‘__main__‘:
print __name__
:
import module import module as module_alias from modules import names .
:
import sys
print sys.path os()
:
os.name windows:nt,linux|unix:posix
os.system():os.popen():,:
os.getcwd():.
os.chdir():os.walk():os.listdir():.
os.mkdir():os.makedirs():;
os.rmdir():;
os.removedirs():.ops
os.path.split():os.path.abspath(name):os.path.splitext():os.path.join(path,name):os.path.basename(path):os.path.dirname(path)::
os.remove():os.rename():;
os.path.exists():os.path.isfile():os.path.isdir():.
os.path.islink()::
os.stat():.
os.getatime():os.getctime():os.getmtime():os.path.getsize(name):,nameOL
random()
random.randint(n,m):.
ramdom.randrange([start],stop[,step]):,md5,hashlib
import hashlib
string = ‘abc‘
hash = hashlib.md5()
hash.update(string)
print hash.hexdiget()
time197011:,,,time.struct_time
2016-6-29 11:07
Time:
import time as t
t.time(): UTCt.asctime():t.localtime():,t.sleep(secs):t.mktime(tuple):t.strptime(srring[.format]):.
:
dt = datetime.datetime.now()
# print ‘(%Y-%m-%d %H:%M:%S %f): ‘, dt.strftime(‘%Y-%m-%d %H:%M:%S %f‘)
# print ‘(%Y-%m-%d %H:%M:%S %p): ‘, dt.strftime(‘%y-%m-%d %I:%M:%S %p‘)
# print ‘%%a: %s ‘ % dt.strftime(‘%a‘)
# print ‘%%A: %s ‘ % dt.strftime(‘%A‘)
# print ‘%%b: %s ‘ % dt.strftime(‘%b‘)
# print ‘%%B: %s ‘ % dt.strftime(‘%B‘)
# print ‘%%c: %s ‘ % dt.strftime(‘%c‘)
# print ‘%%x%s ‘ % dt.strftime(‘%x‘)
# print ‘%%X%s ‘ % dt.strftime(‘%X‘)
# print ‘%s‘ % dt.strftime(‘%w‘)
# print ‘%s‘ % dt.strftime(‘%j‘)
# print ‘%s‘ % dt.strftime(‘%U‘)
# %aWeb
# %AWednesday
# %b4Apr
# %B4April
# %c: 04/07/10 10:43:39# %d: # %f: [0,999999]# %H: 24[0, 23]# %I: 12[0, 11]# %j: [001,366]# %m: [01,12]# %M: [00,59]# %p: AMPM
# %S: [00,61][00, 59]python~_~# %U: # %w: [0, 6]6# %W: # %x: 04/07/10# %X: 10:43:39# %y: 2# %Y: 4# %z: utc# %Z: # %%: %% => %
def getTime(second=None):
if second:
ftime = t.strftime(‘%Y-%m-%d %H:%M:%S‘,t.gmtime(second))
else:
ftime = t.strftime(‘%Y-%m-%d %H:%M:%S‘) #return ftime # # def getSecond(ftime=None):
if ftime:
if ftime.count(‘ ‘) != 0:
second = t.mktime(t.strptime(ftime,‘%Y-%m-%d %H:%M:%S‘))
else:
second = t.mktime(t.strptime(ftime,‘%Y-%m-%d‘))
else:
second = t.time()
return int(second)
sys:
sys.argv:List,sys.exit(n):,exit(0)
sys.version:pythonsys.maxint:Intsys.maxunicode:Unicodesys.path:,PYTHONPATHsys.platform::
::
python(),..
:
,,.
:
NameError:: print a
SyntaxError:i = 100 print i.1
IOError:/,f =file(‘1.txt‘) r.read()
ImportError:,IndentationError:,IndexError:TypeError:AttributeError:,.
:
python:
try:
pass
except ,e:
pass
Exception :try:
-->except Exception1[,reason]: -->-->except Exception2[,reason]: -->-->except: -->exceptelse: -->finally: -->:
assert expression[,reason]
assert.,expression,,..
:
(RE),,.
re:
pythonre.
\d \D \w ,,\W ,,\s \S recompole()::compile(pattern,flags=0)
findall():()(()),:findall(pattern,string[,flags])
match():,,None.
:match(pattern,string)
search():.
,,None.
:search(pattern,string)
split():,,max()
:solit(pattern,string,max=0)
sub()subn()
:.
subn()sub(),,:sub(pattern,repl,string,max=0)
group():.
group(i):i‘()‘groups():().
start():end():span()::
conn=MySQLdb.connect(host="localhost",user="root",passwd="123",db="zj",charset="utf8")
:
host:,user:,passwd:,db:,port:MySQLTCP,3306
charset::
commit():rollback():cursor():,:
cursor:
execute(self,query,args):sql,executemany(self,query,args):sqlcursor:
fetchall(self):.
fetchmany(self,size=Nome):sizesize,cursor.arraysizeferchone(self)::
:
sql = ‘‘‘create table employee(name char(20)) ‘‘‘
cursor.execute(sql)
:
sql = ‘‘‘ insert into employee(name) values(‘zj‘) ‘‘‘
cursor.execute(sql)
:
sql = ‘‘‘select * from employee ‘‘‘
cursor.execute(sql)
results = cursor.fetchall()
for row in results:
name = row[0]
:
sql = ‘‘‘ update employee set name = zz where id = %d ‘‘‘ %id
cursor.execute(sql)
:
sql = "DELETE FROM EMPLOYEE WHERE AGE > ‘%d‘"
cursor.execute(sql)
psutil,cpu,,ps toplsofpmapwho iotop1.:
disk = psutil.disk_partitions()
for i in disk:
print ":%s :%s" %(i.device,i.fstype)
disk_use = psutil.disk_usage(i.device)
print ":%fM,:%fM,%fM,%f%%,"%(disk_use.used/1024/1024,disk_use.free/1024/1024,disk_use.percent)
2cpudef cpu():
while True:
time.sleep(1)
cpu_liyonglv = psutil.cpu_percent()
print "cpu%s%%"%cpu_liyonglv
if cpu_liyonglv >15.0:
baojing()
def baojing():
i = 0
while i < 10 :
i += 1
time.sleep(0.5)
winsound.PlaySound("ALARM8",winsound.SND_ALIAS)
cpu()
3memory = psutil.virtual_memory()
print memory.used
print memory.total
ab = float(memory.used)/float(memory.total)*100
print "%.2f%%"%ab
print psutil.swap_memory()
4#count = psutil.net_io_counters()
print "\033[1;31;42m%s\033[0mbytes,\033[1;31;42m%s\033[0mbytes,%s,%s"%(count.bytes_sent,count.bytes_recv,count.packets_sent,count.packets_recv)
users = psutil.users()
print "",users[0].name
#curent_time = psutil.boot_time()
curent_time_1 = time.strftime("%Y-%m-%d %H:%M:%S",time.localtime(curent_time))
print curent_time_1
5#pidpid = psutil.pids()
for k,i in enumerate(pid):
try:
proc = psutil.Process(i)
print k,i,"%.2f%%"%(proc.memory_percent()),"%",proc.name(),proc.exe()
except psutil.AccessDenied :
print "psutil.AccessDenied"
socket:
.,socket.
BSD UNIX,"",IP,.
.
1.socketpython socet.
socket,BSD Sockets API
socketServer,,.
:
socket(family,type[,protocal]) ,,.
socket.AF_UNIX:unixsocket.AF_INET:socket.AF_INET6:ipv6
socket.SOCK_STREAM:socket,for TCP
socket.SOCK_DGRAM:socket,for UDP
socket.SOCK_RAW:,ICMP,IGMPsocket.SOCK_SEQPACKET:TCP socket: s=socket.socket(socket.AF_INET,socket.SOCKE_STREAM)
UDP socket: s=socket.socket(socket.AF_INET,socket.SOCKE_DGRAM)
sockettcp,TCP,.UDP,.
,,.repr(data).
socket
s.bind(address): ,AF_INET,(host,port).
s.listten(backlog):TCP.backlog,s.accept():TCP(conn,address),conn,.address.
socket:
s.connect(address):address.address(hostname,port),,socket.error.
s.connect_ex(address):connect(address),0,errnosocket:
s.rcv(bufize[,flag]):TCP.,bufsize.flag,s.send(string[,flag]):TCP.string.,string.
s.sendall(string[,flag]):TCP.string,.None,.
s.recvfrom(bufsize[,flag]):UDP.recv(),(data,address).data,address.
s.sendto(string[,flag],address):UDP.,address(ipaddr,port),.s.close():s.getpeername():..
s.getsockname():.(ipaddr,port)
s.setsockopt(level,optname,value):s.getsockopt(level,optname[,buflen]):s.settimeout(timeout):,timeout,.Noneconnect()s.getimeout():,.,None
s.setblocking(flag):flag0recv()send()socket.error.
s.makefile():tcp:
:
socket.socket(socket.AF_INET,socket.SOCKE_STREAM)
s.bind()
:
s.listten()
s.accept()
,s.recv(),s.sendall()
,s.close()
tcp:
socket.socket(socket.AF_INET,socket.SOCKE_STREAM)
s.connect
s.sendall()
s.recv()
,s.close
smtplibparamiko
:
1.pyCrypto
2.ecdsa
3.paramiko
SSHclient
sftpclient
threadthreading原文地址：http://5180043.blog.51cto.com/5170043/1795996
