升级到OSX Mavericks并且一切都破裂了.我尝试了"sudo easy_install pip"技巧,似乎小狗在其他地方:
Best match: pip 1.4.1
Processing pip-1.4.1-py2.7.egg
pip 1.4.1 is already the active version in easy-install.pth
Installing pip script to /Library/Frameworks/Python.framework/Versions/2.7/bin
Installing pip-2.7 script to /Library/Frameworks/Python.framework/Versions/2.7/bin
Using /Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/pip-1.4.1-py2.7.egg
Processing dependencies for pip
Finished processing dependencies for pip
点数投掷:
Traceback (most recent call last):
File "/usr/local/bin/pip", line 5, in <module>
from pkg_resources import load_entry_point
File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/pkg_resources.py", line 2603, in <module>
working_set.require(__requires__)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/pkg_resources.py", line 666, in require
needed = self.resolve(parse_requirements(requirements))
File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/pkg_resources.py", line 565, in resolve
raise DistributionNotFound(req) …对不起,如果这是一个noob问题,我搜索了很多,但找不到答案.
我正在开发一个依赖于sqlite进行本地存储的html5应用程序.
我希望它在iPhone/Android屏幕上显示为应用程序图标,最好的方法是什么？即我可以编写某种"包装"应用程序来实现它吗？
谢谢!
所以我根据教程创建了一个django项目和应用程序,我拥有MongoDB引擎所需的所有依赖项,所有这些似乎都工作正常,花花公子直到我尝试启用管理界面.
我取消注释了需求位,并将"django_mongodb_engine"和"djangotoolbox"添加到settings.py中的apps部分
当我尝试进入localhost:8000/admin时出现错误:
"AutoField(默认主键)值必须是表示MongoDB上的ObjectId的字符串(取而代之的是u'1'.请确保您的SITE_ID包含有效的ObjectId字符串."
经过一些谷歌搜索显然我必须运行manage.py tellsiteid并且它会向我吐出我可以在我的settings.py中使用的ID,这将使错误消失,但是当我尝试运行manage.py tellsiteid时,我得到:
Traceback (most recent call last):
File "./manage.py", line 14, in <module>
execute_manager(settings)
File "/Users/holografix/.virtualenvs/django_nonrel_env/lib/python2.7/site- packages/django/core/management/__init__.py", line 438, in execute_manager utility.execute()
File "/Users/holografix/.virtualenvs/django_nonrel_env/lib/python2.7/site-packages/django/core/management/__init__.py", line 379, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/Users/holografix/.virtualenvs/django_nonrel_env/lib/python2.7/site-packages/django/core/management/base.py", line 191, in run_from_argv
self.execute(*args, **options.__dict__)
File "/Users/holografix/.virtualenvs/django_nonrel_env/lib/python2.7/site-packages/django/core/management/base.py", line 220, in execute
output = self.handle(*args, **options)
File "/Users/holografix/.virtualenvs/django_nonrel_env/lib/python2.7/site-packages/django/core/management/base.py", line 351, in handle
return self.handle_noargs(**options)
File "/Users/holografix/.virtualenvs/django_nonrel_env/lib/python2.7/site-packages/django_mongodb_engine/management/commands/tellsiteid.py", line 8, in handle_noargs
site_id = self._get_site_id()
File "/Users/holografix/.virtualenvs/django_nonrel_env/lib/python2.7/site-packages/django_mongodb_engine/management/commands/tellsiteid.py", line 19, in _get_site_id
return Site.objects.get().id
File "/Users/holografix/.virtualenvs/django_nonrel_env/lib/python2.7/site-packages/django/db/models/manager.py", line …Mongoengine将FileField和ImageField存储到GridFS.复制原始文件/图像字段功能的最简单方法是什么？
编辑:
所以这就是我现在所拥有的课程.我能够加载文件并将它们保存到磁盘,Mongo保存数据库中文件的路径.
我正在堕落"to_python",因为我认为它需要创建一个proxy_class的对象,但我无法看到,如果我得到的只是一个文件的路径(作为传入的值).
import os
import datetime
from mongoengine.python_support import str_types
from django.db.models.fields.files import FieldFile
from django.core.files.base import File
from django.core.files.storage import default_storage
from mongoengine.base import BaseField
from mongoengine.connection import get_db, DEFAULT_CONNECTION_NAME
from django.utils.encoding import force_text
#from django.utils.encoding import force_str
class DJFileField(BaseField):
proxy_class = FieldFile
def __init__(self,
db_alias=DEFAULT_CONNECTION_NAME,
name=None,
upload_to='',
storage=None,
**kwargs):
self.db_alias = db_alias
self.storage = storage or default_storage
self.upload_to = upload_to
if callable(upload_to):
self.generate_filename = upload_to
super(DJFileField, self).__init__(**kwargs)
def __get__(self, instance, owner):
# Lots of information on …我再次与 Excel 2007 搏斗！我有一些数据用于生成数据透视表，我想将所有数据除以 1000...
我知道我可以手动更改原始数据，但我更愿意在数据透视表中使用一个公式来为我执行此操作。
有什么想法吗？
ps：你们真棒！
我还在学习VBA,我无法弄清楚我是否遇到过Collections对象的这么多问题.
我有一个函数添加自定义对象(我创建了一个非常简单的类来存储一些数据),它执行典型的"读取数据,创建对象表示,将其粘贴到集合"这类东西.
如果我尝试在bag.add调用中添加"密钥",则会收到"编译错误.预期:="消息.
如果我没有它似乎工作,那么当我运行程序时它会显示"编译错误.参数不是可选的"并突出显示"getRevColumns = bag"行.
我不能为我的生活弄清楚是不是正在发生!我怀疑我的包包初始化有什么问题？!PS:columnMap是我的自定义类的名称.
Function getRevColumns() As Collection
Dim rng As Range
Dim i As Integer
Dim bag As Collection
Dim opManCol As Integer, siebelCol As Integer
Dim opManColName As String, siebelColName As String
Dim itm As columnMap
Set bag = New Collection
Set rng = shSiebelMap.UsedRange.Columns(5)
i = 1
For i = 1 To rng.Rows.count
If StrComp(UCase(rng.Cells(i).value), "Y") = 0 Then
opManCol = rng.Rows(i).OffSet(0, -2).value
opManColName = rng.Rows(i).OffSet(0, -4)
siebelCol = rng.Rows(i).OffSet(0, -1).value
siebelColName = rng.Rows(i).OffSet(0, …