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How do I get the parent directory in Python?
...h Pathlib.
Navigating inside a directory tree:
>>> p = Path('/etc')
>>> q = p / 'init.d' / 'reboot'
>>> q
PosixPath('/etc/init.d/reboot')
>>> q.resolve()
PosixPath('/etc/rc.d/init.d/halt')
Querying path properties:
>>> q.exists()
True
>>>...
XMLHttpRequest cannot load file. Cross origin requests are only supported for HTTP
...get back to the C:\ Root directory - type cd/
type cd Drive:\Folder\Folder\etc to get to the folder where your .Html file is (or php, etc)
Check the path. type: path at the command prompt. You must see the path to the folder where python is located. For example, if python is in C:\Python27, then...
Why is Everyone Choosing JSON Over XML for jQuery? [closed]
...do even simple data structures in XML -- as elements, as attribute values, etc. Then you have to document it, write up XML Schema or Relax NG or some other crap... It's a mess.
XML may have its merits, but for basic data interchange, JSON is much more compact and direct. As a Python developer, ther...
When should I use OWIN Katana?
...ame their vehicle accordingly. Therefore, Sedan, Pickup Truck, SUV, VAN, ..etc.. all kind of vehicle showed up in the market. If someone does not need to carry heavy stuff all the time, rather needs a vehicle just for going to workplace, he/she can buy a little Sedan. Someone can buy SUV if he needs...
What is the difference between -viewWillAppear: and -viewDidAppear:?
...mpact performance in a very visible manner (like animations being delayed, etc).
3) ViewDidAppear: Finally, I use the ViewDidAppear to start off new threads to things that would take a long time to execute, like for example doing a webservice call to get extra data for the form above.The good thing...
send/post xml file using curl command line
...art/form-data according to RFC2388. This enables uploading of binary files etc. To force the 'content' part to be a file, prefix the file name with an @ sign.
Example, to send your password file to the server, where 'password' is the name of the form-field to which /etc/passwd will be the inpu...
ORACLE 启动提示 内存不足 OUTOF MEMORY - 数据库(内核) - 清泛网 - 专注C/C++及内核技术
ORACLE 启动提示 内存不足 OUTOF MEMORY原配置 etc sysctl.conf文件kernel.shmall = 2097152kernel.shmmax = 2147483648kernel.shmmni = 4096kernel.sem = 250 32000 10...
原配置 /etc/sysctl.conf文件
kernel.shmall = 2097152
kernel.shmmax = 2147483648
kernel.shmmni = 4096
kerne...
[解决]MySql提示:The server quit without updating PID file(…)失败 - 数...
...rekfan.com/?p=186
4.mysql在启动时没有指定配置文件时会使用/etc/my.cnf配置文件，请打开这个文件查看在[mysqld]节下有没有指定数据目录(datadir)。
解决方法：请在[mysqld]下设置这一行：datadir = /usr/local/mysql/data
5.skip-federated字段问题
...
解决：error while loading shared libraries: libpcre.so.1: cannot open ...
...件的位置（可以使用命令 whereis xxx ），并把目录添加到/etc/ld.so.conf.d/libc.conf中，没有则新建这个文件。然后再运行ldconfig才可以生效。
解决：用以下shell命令解决：（用root用户）
echo "/usr/local/lib" >> /etc/ld.so.conf.d/libc.conf
sudo...
Linux下追踪程序退出(崩溃)思路 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...
历史命令默认会保存1000条，如果觉得太少，可以修改/etc/profile中HISTSIZE=1000，改成你想要的值。
注意：history只针对登录用户下执行有效，即使root用户也无法得到其它用户histotry历史。当然，还是有办法记录所有登陆用户的...