小编zjm*_*126的帖子

我a.py在我的mysite文件中构建了一个,

a.py:

from django.core.management import setup_environ
from mysite import settings

setup_environ(settings)

from django.contrib.sites.models import Site
domain = Site.objects.get_current().domain
print domain

它打印:

:example.com

如何将"域"更改为127.0.0.1:8000？

from django.core.management import setup_environ
from register import settings
setup_environ(settings)


from django.contrib.sites.models import Site
#domain = Site.objects.get_current().domain
#print domain

from django.contrib.auth.models import User 
obj=Site.objects.get(id=1).update(name='sss')
print obj

错误:

Traceback (most recent call last):
  File "D:\zjm_code\register\a.py", line 13, in <module>
    obj=Site.objects.get(id=1).update(name='sss')
AttributeError: 'Site' object has no attribute 'update'

网址为“ http://127.0.0.1:8000/maps/map/wwww/ ”

如何得到最后一个词

谢谢

这是mootools代码:

var myString = "{subject} is {property_1} and {property_2}.";
var myObject = {subject: 'Jack Bauer', property_1: 'our lord', property_2: 'savior'};
myString.substitute(myObject);

并且jquery有这个方法吗？或者喜欢这种方法？

我可以这样读取a.txt文件:

text = open('a.txt', 'rb').read()

但当我把a.txt到media文件夹中,这不起作用:

text = open('/media/a.txt', 'rb').read()

我收到以下错误:

IOError at /
[Errno 13] file not accessible: '/media/a.txt'

如何从media目录中读取文件？

我的代码是:

print os.urandom(64)

哪个输出:

> "D:\Python25\pythonw.exe"  "D:\zjm_code\a.py" 
\xd0\xc8=<\xdbD'
\xdf\xf0\xb3>\xfc\xf2\x99\x93
=S\xb2\xcd'\xdbD\x8d\xd0\\xbc{&YkD[\xdd\x8b\xbd\x82\x9e\xad\xd5\x90\x90\xdcD9\xbf9.\xeb\x9b>\xef#n\x84

这是不可读的,所以我尝试了这个:

print os.urandom(64).decode("utf-8")

但后来我得到:

> "D:\Python25\pythonw.exe"  "D:\zjm_code\a.py" 
Traceback (most recent call last):
  File "D:\zjm_code\a.py", line 17, in <module>
    print os.urandom(64).decode("utf-8")
  File "D:\Python25\lib\encodings\utf_8.py", line 16, in decode
    return codecs.utf_8_decode(input, errors, True)
UnicodeDecodeError: 'utf8' codec can't decode bytes in position 0-3: invalid data

我该怎么做才能获得人类可读的输出？

WTForms是用于python web开发的表单验证和呈现库

我写这个代码来检查两个密码是否相同:

from wtforms import Form, BooleanField, TextField, validators

class SignUpForm(Form):
    username     = TextField('Username', [validators.Length(min=4, max=25)])
    email = TextField('Email', [validators.Length(min=6, max=120), validators.Email()])
    password1 = PasswordField('Password1')
    password2 = PasswordField('Password2')

    def sameP(self):
        return self.password1 ==self.password2

但是,我想知道:WTForms可以自己做.

谢谢

class a:
    def __init__(self):
        self._b()#why here use _b,not b,What's the difference
        self._c='cccc'#why here use _c,not c,What's the difference
    def _b():
        print 'bbbb'

a.py

class a:
    def __init__(self):
        self._b()#why here use _b,not b,What's the difference
        self._c='cccc'#why here use _c,not c,What's the difference
    def _b(self):
        print 'bbbb'

b.py

from  a import *
b=a()
b._b()
print b._c

它打印bbbb bbbb bbbb bbbb cccc

为什么可以打印出这些,不是_b和_c私有变量.

此代码位于django.utils.functional.py中

class __proxy__(Promise):

谢谢

对于代码:

def a(x):
    if x=='s':
        __import__('os') #I think __import__ == import
        print os.path

为什么不print a('os')打印os.path？

我的下一个问题是:为什么以下代码使用__import__('some')而不是像a = __import__('os')？

def import_module(name, package=None):
    if name.startswith('.'):
        if not package:
            raise TypeError("relative imports require the 'package' argument")
        level = 0
        for character in name:
            if character != '.':
                break
            level += 1
        name = _resolve_name(name[level:], package, level)
    __import__(name)            #Why does it do this
    return sys.modules[name]    #Instead of `return __import__(name)`

class a(object):
    b = 'bbbb'
    def __init__(self):
        self.c = 'cccc'

我认为他们是一样的; 有什么不同吗？