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python中ret是什么意思_python 代码中 ret=True 代表什么意思?
2020-12-21 00:25:06importsmtplibfromemail.mime.textimportMIMETextfromemail.utilsimportformataddrmy_sender='429240967@qq.com'#发件人邮箱账号my_pass='xxxxxxxxxx'#发件人邮箱密码my_user='429240...import smtplibfrom email....importsmtplibfromemail.mime.textimportMIMETextfromemail.utilsimportformataddrmy_sender='429240967@qq.com'#发件人邮箱账号my_pass='xxxxxxxxxx'#发件人邮箱密码my_user='429240...
import smtplibfrom email.mime.text import MIMETextfrom email.utils import formataddr my_sender='429240967@qq.com' # 发件人邮箱账号my_pass = 'xxxxxxxxxx' # 发件人邮箱密码my_user='429240967@qq.com' # 收件人邮箱账号,我这边发送给自己def mail(): ret=True try: msg=MIMEText('填写邮件内容','plain','utf-8') msg['From']=formataddr(["FromRunoob",my_sender]) # 括号里的对应发件人邮箱昵称、发件人邮箱账号 msg['To']=formataddr(["FK",my_user]) # 括号里的对应收件人邮箱昵称、收件人邮箱账号 msg['Subject']="菜鸟教程发送邮件测试" # 邮件的主题,也可以说是标题 server=smtplib.SMTP_SSL("smtp.qq.com", 465) # 发件人邮箱中的SMTP服务器,端口是25 server.login(my_sender, my_pass) # 括号中对应的是发件人邮箱账号、邮箱密码 server.sendmail(my_sender,[my_user,],msg.as_string()) # 括号中对应的是发件人邮箱账号、收件人邮箱账号、发送邮件 server.quit() # 关闭连接 except Exception: # 如果 try 中的语句没有执行,则会执行下面的 ret=False ret=False return ret
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python中的字典是什么_| 在python字典中是代表什么意思?
2020-12-03 09:58:33class Role(db.Model):@staticmethoddef insert_roles():roles = {'User': (Permission.FOLLOW |Permission.COMMENT |Permission.WRITE_ARTICLES, True),'Moderator': (Permission.FOLLOW |Permission.COMMENT |Perm...class Role(db.Model):
@staticmethod
def insert_roles():
roles = {
'User': (Permission.FOLLOW |
Permission.COMMENT |
Permission.WRITE_ARTICLES, True),
'Moderator': (Permission.FOLLOW |
Permission.COMMENT |
Permission.WRITE_ARTICLES |
Permission.MODERATE_COMMENTS, False),
'Administrator': (0xff, False)
}
for r in roles:
role = Role.query.filter_by(name=r).first() if role is None:
role = Role(name=r)
role.permissions = roles[r][0]
role.default = roles[r][1]
db.session.add(role)
db.session.commit()
请问roles字典中Permission.FOLLOW |Permission.COMMENT |
Permission.WRITE_ARTICLES, True
这里的|代表什么意思啊 是表示换行吗?
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Linux部分命令解释(命令缩写代表什么意思)
2016-02-03 22:33:27bin = BINaries -----二进制 /dev = DEVices -----设备 /etc = ETCetera -----诸如此类 /lib = LIBrary .../sbin = Superuser BINaries /tmp = TeMPorary /usr = Unix Shared Resources /var = Vbin = BINaries -----二进制
/dev = DEVices -----设备
/etc = ETCetera -----诸如此类
/lib = LIBrary
/proc = PROCesses
/sbin = Superuser BINaries
/tmp = TeMPorary
/usr = Unix Shared Resources
/var = VARiable ?
FIFO = First In, First Out
GRUB = GRand Unified Bootloader
IFS = Internal Field Seperators
LILO = LInux LOader
MySQL = My是最初作者女儿的名字,SQL = Structured Query Language
PHP = Personal Home Page Tools = PHP Hypertext Preprocessor
PS = Prompt String
Perl = "Pratical Extraction and Report Language" = "Pathologically Eclectic Rubbish Lister"
Python 得名于电视剧Monty Python's Flying Circus
Tcl = Tool Command Language
Tk = ToolKit
VT = Video Terminal
YaST = Yet Another Setup Tool
apache = "a patchy" server
apt = Advanced Packaging Tool
ar = archiver
as = assembler
awk = "Aho Weiberger and Kernighan" 三个作者的姓的第一个字母
bash = Bourne Again SHell
bc = Basic (Better) Calculator
bg = BackGround
biff = 作者Heidi Stettner在U.C.Berkely养的一条狗,喜欢对邮递员汪汪叫。
cal = CALendar
cat = CATenate
cd = Change Directory
chgrp = CHange GRouP
chmod = CHange MODe
chown = CHange OWNer
chsh = CHange SHell
cmp = compare
cobra = Common Object Request Broker Architecture
comm = common
cp = CoPy
cpio = CoPy In and Out
cpp = C Pre Processor
cron = Chronos 希腊文时间
cups = Common Unix Printing System
cvs = Current Version System
daemon = Disk And Execution MONitor
dc = Desk Calculator
dd = Disk Dump
df = Disk Free
diff = DIFFerence
dmesg = diagnostic message
du = Disk Usage
ed = editor
egrep = Extended GREP
elf = Extensible Linking Format
elm = ELectronic Mail
emacs = Editor MACroS
eval = EVALuate
ex = EXtended
exec = EXECute
fd = file descriptors
fg = ForeGround
fgrep = Fixed GREP
fmt = format
fsck = File System ChecK
fstab = FileSystem TABle
fvwm = F*** Virtual Window Manager
gawk = GNU AWK
gpg = GNU Privacy Guard
groff = GNU troff
hal = Hardware Abstraction Layer
joe = Joe's Own Editor
ksh = Korn SHell
lame = Lame Ain't an MP3 Encoder
lex = LEXical analyser
lisp = LISt Processing = Lots of Irritating Superfluous Parentheses
ln = LiNk
lpr = Line PRint
ls = list
lsof = LiSt Open Files
m4 = Macro processor Version 4
man = MANual pages
mawk = Mike Brennan's AWK
mc = Midnight Commander
mkfs = MaKe FileSystem
mknod = MaKe NODe
motd = Message of The Day
mozilla = MOsaic GodZILLa
mtab = Mount TABle
mv = MoVe
nano = Nano's ANOther editor
nawk = New AWK
nl = Number of Lines
nm = names
nohup = No HangUP
nroff = New ROFF
od = Octal Dump
passwd = PASSWorD
pg = pager
pico = PIne's message COmposition editor
pine = "Program for Internet News & Email" = "Pine is not Elm"
ping = 拟声 又 = Packet InterNet Grouper
pirntcap = PRINTer CAPability
popd = POP Directory
pr = pre
printf = PRINT Formatted
ps = Processes Status
pty = pseudo tty
pushd = PUSH Directory
pwd = Print Working Directory
rc = runcom = run command, rc还是plan9的shell
rev = REVerse
rm = ReMove
rn = Read News
roff = RunOFF
rpm = RPM Package Manager = RedHat Package Manager
rsh, rlogin, rvim中的r = Remote
rxvt = ouR XVT
seamoneky = 我
sed = Stream EDitor
seq = SEQuence
shar = SHell ARchive
slrn = S-Lang rn
ssh = Secure SHell
ssl = Secure Sockets Layer
stty = Set TTY
su = Substitute User
svn = SubVersioN
tar = Tape ARchive
tcsh = TENEX C shell
tee = T (T形水管接口)
telnet = TEminaL over Network
termcap = terminal capability
terminfo = terminal information
tex = τ?χνη的缩写,希腊文art
tr = traslate
troff = Typesetter new ROFF
tsort = Topological SORT
tty = TeleTypewriter
twm = Tom's Window Manager
tz = TimeZone
udev = Userspace DEV
ulimit = User's LIMIT
umask = User's MASK
uniq = UNIQue
vi = VIsual = Very Inconvenient
vim = Vi IMproved
wall = write all
wc = Word Count
wine = WINE Is Not an Emulator
xargs = eXtended ARGuments
xdm = X Display Manager
xlfd = X Logical Font Description
xmms = X Multimedia System
xrdb = X Resources DataBase
xwd = X Window Dump
yacc = yet another compiler compiler -
php this 代表什么,php中$this-)是什么意思?
2021-03-23 12:58:46$this 的含义表示什么,实例化后的具体对象!我们一般是先声明一个类,然后用这个类去实例化对象!但是,当我们在声明这个类的时候,想在类本身内部使用本类的属性或者方法。应该怎么表示呢?例如:我们声明一个User...$this 的含义表示什么,实例化后的具体对象!
我们一般是先声明一个类,然后用这个类去实例化对象!
但是,当我们在声明这个类的时候,想在类本身内部使用本类的属性或者方法。应该怎么表示呢?
例如:
我们声明一个User类!它只含有一个属性$name;
classname
{
public $_name;
}
现在我们给User类加个方法。使用getName()方法,输出$name属性的值吧!复制php内容到剪贴板
php代码:
class User
{
public $name;
function getName()
{
echo $this->name;
}
}
//如何使用呢?
$user1=new User();
$user1->name='张三';
$user1->getName();
$user2=new User();
$user2->name='李四';
$user2-getName();
怎么理解呢?
我上面创建了两个User对象。分别是$user1和$user2.
当我调用$user1->getName()的时候。上面User类中的代码echo $this->name ;就是相当于是echo $user1->name;
大概就是这个意思!
其实,你也不要去钻牛角尖。你只要知道那是一个用来表示类内部的属性和方法的代号就好了!越想越糊涂的!
如您对本文有疑问或者有任何想说的,请点击进行留言回复,万千网友为您解惑!
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Spring bean中的properties元素内的name 和 ref都代表什么意思啊?
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主板上的内存插槽颜色到底代表了什么意思?
2013-12-07 13:26:56黄色和橙色、蓝色和黑色、绿色和红色:我们常常会发现主板上的内存插槽有着各种各样的颜色...我总是看到主板的内存插槽上有着各种颜色,且它们是成对出现的,但是从来没搞明白这到底是什么意思。我只是将两根内存随意插 -
input标签中value="${user.phone!?html}",这种表达式是什么意思?
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id=%d是什么意思呢?
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