我是WPF世界的新手,我正在开发一个应用程序,我需要在一个应用程序中拥有多个窗口.与Photoshop一样,当用户点击"新建"按钮时,将打开一个新窗口,旧的现有窗口将在后台显示.但是,工具栏和状态栏保持在顶部,不受影响.我还想添加用户可以使用多个窗口的功能,如果每个窗口都没有最大化.我该如何实现这一目标？如果我在构建问题时有点不清楚,我会道歉.
我有这段代码在localhost上完美运行,但在GAE上引发了这个模糊的错误:
import_string() failed for 'webapp2_extras.appengine.auth.models.User' . Possible reasons are: - missing __init__.py in a package; - package or module
我的进口声明:
from webapp2_extras import auth
from webapp2_extras import sessions
from webapp2_extras.auth import InvalidAuthIdError
from webapp2_extras.auth import InvalidPasswordError
auth's用户模型的用法:
user = self.auth.store.user_model.create_user(username, password_raw = password, email = email)
if not user[0]: #returns a tuple with [boolean, user_info]
return 'Create user error'
else:
self.set_flash("Thank you for registering. Please login!")
self.redirect(self.auth_config['login_url'])
import_string() failed for 'webapp2_extras.appengine.auth.models.User'. Possible reasons are:
- missing __init__.py …很长一段时间以来,我一直在努力让这项工作得以实现,但我现在真的很有智慧.我已经尝试过在SO和flask文档上找到的所有内容,但我仍然无法使用简单的错误日志,以便我可以调试我的applcation.以下是粘贴的代码 -
# main.py
from flask import Flask
import logging
app = Flask(__name__)
file_handler = logging.FileHandler(filename='/tmp/election_error.log')
file_handler.setLevel(logging.WARNING)
app.logger.addHandler(file_handler)
@app.route('/')
def hello():
return "hello
#missing quotes to generate error
if __name__ == "__main__":
app.run()
#wsgi file
import sys
import logging
sys.path.insert(0, "/var/www/voting_app")
logging.basicConfig(stream=sys.stderr)
from main import app as application
# apache2 conf file
WSGIDaemonProcess voting_app threads=5
WSGIScriptAlias /election /var/www/voting_app/voting_app.wsgi
LogLevel info
<Directory /var/www/voting_app>
WSGIProcessGroup voting_app
WSGIApplicationGroup %{GLOBAL}
Order deny,allow
Allow from all
</Directory>
请告诉我我哪里出错了.非常感谢.
我正在尝试使用cURL将数据发布到此URL上的表单:
http://dq.sdc.bsnl.co.in/dq/reversePhone.seam?cid=812363
看到它的来源,表格看起来像
<form id="revPhone" name="revPhone" method="post" action="/bsnl-web/reversePhone.seam;jsessionid=D238FA7A23A89A38C56B808B96F5D212" enctype="application/x-www-form-urlencoded" onkeyup="if (!check2(event)) {return false;};A4J.AJAX.Submit('loader2','revPhone',event,{'eventsQueue':'myqueue','parameters':{'revPhone:j_id16':'revPhone:j_id16'} ,'actionUrl':'/bsnl-web/reversePhone.seam;jsessionid=D238FA7A23A89A38C56B808B96F5D212','requestDelay':5} )">
<input type="hidden" name="revPhone" value="revPhone" />
<input type="hidden" name="revPhone:j_id12" />
<input id="revPhone:firstField" type="text" name="revPhone:firstField" maxlength="8" onkeydown="return removeEnter1(event)" />
代码粘贴在这里:http://hastebin.com/wihunayilu.xml
尝试使用这些值的curl:
curl --data "revPhone:firstField=24988872&revPhone:city=CHENNAI" http://dq.sdc.bsnl.co.in/dq/reversePhone.seam?cid=812363
我最后再次使用相同的页面作为回复.我如何看到(使用firebug？)传递给帖子表单的参数,以便我可以正确地将请求发送到服务器？
非常感谢
任何人都可以解释以下行为吗？
var ctx = $('#myCanvas').getContext("2d"); //doesnt work
var ctx = $('#myCanvas')[0].getContext("2d"); //works
canvasWidth = $('#myCanvas').width(); //works
canvasHeight = $('#myCanvas').height(); //works
canvasWidth = $('#myCanvas')[0].width(); //doesnt work
canvasHeight = $('#myCanvas')[0].height(); //doesnt work
我的features文件看这个:
Given there are the following users:
| email | password | admin |
| admin@ticketee.com | password | true |
并且我的user模型没有声明admin属性attr_accessible以防止批量分配.因此,我已对user_steps.rb文件进行了更改以解决此问题.
Given /^there are the following users:$/ do |table|
table.hashes.each do |attributes|
unconfirmed = attributes.delete("unconfirmed") == "true"
@user = User.create!(attributes)
@user.update_attribute("admin", attributes["admin"] == "true")
@user.confirm! unless unconfirmed
end
end
现在这应该按照书中的说法--Rails3在行动.我也检查了他们在线仓库的代码.用黄瓜运行它会产生以下错误:
Can't mass-assign protected attributes: admin (ActiveModel::MassAssignmentSecurity::Error)
./features/step_definitions/user_steps.rb:4:in `block (2 levels) in <top (required)>'
./features/step_definitions/user_steps.rb:2:in `each'
./features/step_definitions/user_steps.rb:2:in `/^there are the …我正在尝试用 python 构建一个图形库（以及标准图形算法）。我尝试过实现 DFS，这就是它的样子
def DFS(gr, s, path):
""" Depth first search
Returns a list of nodes "findable" from s """
if s in path: return False
path.append(s)
for each in gr.neighbors(s):
if each not in path:
DFS(gr, each, path)
这工作正常，但我对它的使用方式不满意。例如目前你需要这样做
path = []
DFS(mygraph, "s", path)
print path
相反，我希望以这种方式使用 DFS
path = DFS(mygraph, "s")
print path
对于递归 DFS，我无法想出像上面那样工作的实现。有人可以给我一些关于如何实现这一目标的指示吗？
我有一个像这样的堆(python,heapq模块) -
>>> h = []
>>> heappush(h, (5, 'write code'))
>>> heappush(h, (7, 'release product'))
>>> heappush(h, (1, 'write spec'))
>>> heappush(h, (3, 'create tests'))
如何在O(logn)中将具有项值的元组作为"create tests"删除并保留堆属性？
这是我能想到的(不是O(logn))
for i in range(len(h)):
if h[i][1] == "create tests":
h[i], h[-1] = h[-1], h[i]
popped = h.pop()
heapq.heapify(h)
break
我是一名大学生,除了44,443之外的所有港口都被封锁了.我可以通过连接到github
Host github.com
Hostname ssh.github.com
Port 443
git push heroku master 给我这个错误:
ssh: connect to host heroku.com port 22: Connection refused
fatal: The remote end hung up unexpectedly
我已经尝试过在这里发布的解决方案,但我仍然没有工作.有没有办法可以连接到heroku部署我的网站？
非常感谢
我在apache服务器上部署了一个python flask应用程序.这是我的abc.conf档案:
WSGIDaemonProcess voting_app threads=5
WSGIScriptAlias /election /var/www/voting_app/voting.wsgi
LogLevel info
ErrorLog "/var/www/voting_app/error.log"
CustomLog "/var/www/voting_app/access.log" combined
<Directory /var/www/voting_app>
WSGIProcessGroup voting_app
WSGIApplicationGroup %{GLOBAL}
Order deny,allow
Allow from all
</Directory>
为了检查调试,我在我的应用程序中出现了语法错误.在重新启动服务器时,我收到500服务器错误但我无法在任何地方看到错误的详细信息.我检查了我添加的两个文件作为日志 - 它们完全是空白的.日志文件也是如此/var/log/apache2.我在这里错过了什么？