我在Django中有模型设置如下.
class Pupil(models.Model):
forename = models.CharField(max_length=30)
surname = models.CharField(max_length=30)
dateofbirth = models.DateField()
year = models.IntegerField()
class_group = models.CharField(max_length=30)
email = models.EmailField(blank=True)
assignments = models.ManyToManyField('Assignment', verbose_name='related assignments')
def __unicode__(self):
return u'%s %s' % (self.forename, self.surname)
class Subject(models.Model):
name = models.CharField(max_length=30)
level = models.CharField(max_length=30)
teachers = models.ManyToManyField('Teacher', verbose_name='related teachers')
def __unicode__(self):
return self.name
class Teacher(models.Model):
forename = models.CharField(max_length=30)
surname = models.CharField(max_length=30)
email = models.EmailField(blank=True)
def __unicode__(self):
return u'%s %s' % (self.forename, self.surname)
class Assignment(models.Model):
assignment_name = models.CharField(max_length=30)
date_assigned = models.DateField()
date_submitted = …在经历了sqlite3的这个冲泡问题之后,我做到了
brew rm sqlite python python3
然后
brew install python python3
这安装python2.7.5作为默认解释器和brew安装pip以及python,我以为我能够
pip install virtualenv
为新的python2.7.5安装virtualenv.但是,我得到了
-bash: /usr/local/share/python/pip: /usr/local/Cellar/python/2.7.3/bin/python: bad interpreter: No such file or directory
我怎样才能解决这个问题？我应该在之间创建一个符号链接
/usr/local/share/python/pip --> /usr/local/Cellar/python/2.7.5/bin/pip-2.7
我无法启动我的事件处理程序.我正在将JSON调用到页面中,如下所示.然后,我希望能够单击我创建的一个按钮,该按钮将执行"hello there"警报.它适用于页面上的每个其他元素,但不适用于<button>.
有人可以帮忙吗？
test.js
$(document).ready(function() {
$.getJSON('/api/v1/recipe/?format=json', function(data) {
$.each(data.objects, function(i, recipe) {
$('table#recipes').append('<tr><td>' + recipe.title + '</td><td>' + recipe.ingredients + '</td><td>' + recipe.method + '</td><td><button class="btn" type="button" id="rmv">remove</button></td></tr>');
});
});
$('rmv').on('click', function() {
alert('hello there!');
});
});
recipe.html
{% extends 'base.html' %}
{% block content %}
<div class="container-fluid">
<div class="row-fluid">
<div class="span6">
<form action='' method="post">{% csrf_token %}
{{ form.as_p }}
<input type="submit" value="go baby!">
</form>
</div>
<div class="span6">
<table class="table table-striped table-bordered" id="recipes">
<tr>
<th>Title</th>
<th>Ingredients</th>
<th>Method</th> …我有一个scrapy蜘蛛爬行网站,通过页面上的JavaScript重新加载内容.为了进入下一页抓取,我一直在使用Selenium点击网站顶部的月份链接.
问题在于,即使我的代码按预期移动每个链接,蜘蛛也会抓住月份的第一个月(Sept)数据并返回此重复数据.
我怎么能绕过这个？
from selenium import webdriver
class GigsInScotlandMain(InitSpider):
name = 'gigsinscotlandmain'
allowed_domains = ["gigsinscotland.com"]
start_urls = ["http://www.gigsinscotland.com"]
def __init__(self):
InitSpider.__init__(self)
self.br = webdriver.Firefox()
def parse(self, response):
hxs = HtmlXPathSelector(response)
self.br.get(response.url)
time.sleep(2.5)
# Get the string for each month on the page.
months = hxs.select("//ul[@id='gigsMonths']/li/a/text()").extract()
for month in months:
link = self.br.find_element_by_link_text(month)
link.click()
time.sleep(5)
# Get all the divs containing info to be scraped.
listitems = hxs.select("//div[@class='listItem']")
for listitem in listitems:
item = GigsInScotlandMainItem()
item['artist'] = listitem.select("div[contains(@class, 'artistBlock')]/div[@class='artistdiv']/span[@class='artistname']/a/text()").extract()
#
# …$ echo $PATH
/usr/local/share/python:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/usr/X11/bin
所以/ usr/local/bin就在我的路上.
当我做`哪个python3'
/usr/local/bin/python3
当我然后尝试创建virtualenv
mkvirtualenv py3000 --python=python3
The executable /Users/misdirectedpuffin/python3 (from --python=/Users/misdirectedpuffin/python3) does not exist
Virtualenv在使用默认python时工作 mkvirtualenv testenv' and when doing 'mkvirtualenv py3000 --python=/usr/local/bin/python3
它似乎在寻找$ HOME for python3.我怎么能纠正这个？
**编辑**
我还可以设置export python3=/usr/local/bin/python3在bash_profile,然后调用$python3用--python=$python3,但我真正想要的是--python=python3不美元符号.