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Automatically creating directories with file output [duplicate]
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The os.makedirs function does this. Try the following:
import os
import errno
filename = "/foo/bar/baz.txt"
if not os.path.exists(os.path.dirname(filename)):
try:
os.makedirs(os.path.dirname(filename))
except OS...
is vs typeof
...The second line, if (obj.GetType() == typeof(ClassA)) {}, is faster, for those that don't want to read the article.
(Be aware that they don't do the same thing)
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MongoDB副本集详解 优于以往的主从模式 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...ster节点。
一旦Master节点故障，则会在其余节点中选举出一个新的Master节点。
并引导剩余节点连接到新的Master节点。这个过程对于应用是透明的。
2 Bully选举算法
Bully算法是一种协调者（主节点）竞选算法，主要思想是集...
奇葩职位为何频现互联网？ - 资讯 - 清泛网 - 专注C/C++及内核技术
...旅游创始人、CEO吴志祥前日在北京对外宣布，他们将设立一个“绝世好工种”——— 首席吐槽官“CTuO”。
如此奇葩的职位并非首次出现。还记得2009年澳大利亚旅游局全球招募“大堡礁”看护员吗？半年工资高达15万澳元，引...
64 bit OS下int占几个字节？ - C/C++ - 清泛网 - 专注C/C++及内核技术
64 bit OS下int占几个字节？int固定4字节，不要受64 bit的混淆。int是由编程语言设计决定的，不受编译器的影响。__int64才是8位的。另外，指针是受编译器 OS影响的，3...int固定4字节，不要受64 bit的混淆。int是由编程语言设计决定的...
创业 比“直男癌”更可怕的是“技术癌” - 资讯 - 清泛网 - 专注C/C++及内核技术
...拿高射炮打蚊子：惘顾需求、不找痛点！高射炮打蚊子是一个歇后语，意思是大材小用。看到这个歇后语，或许大多数人都会认为高射炮打蚊子是傻帽才会做的事情，与自己无关。然而，据我的观察，高射炮打蚊子恰恰更像是聪...
How to make a Python script run like a service or daemon in Linux
...will require a simple event loop (where your events are timer triggering, possibly, provided by sleep function).
I wouldn't recommend you to choose 2., because you would be, in fact, repeating cron functionality. The Linux system paradigm is to let multiple simple tools interact and solve your pr...
Is leaked memory freed up when the program exits?
...t a process no longer has a reference to, and thus can no longer free. The OS still keeps track of all the memory allocated to a process, and will free it when that process terminates.
In the vast majority of cases the OS will free the memory - as is the case with normal "flavors" of Windows, Linux...
一分钟读懂低功耗蓝牙(BLE) MTU交换数据包 - 创客硬件开发 - 清泛IT社区，...
... * MTU: 最大传输单元（MAXIMUM TRANSMISSION UNIT） ， 指在一个PDU （Protocol Data Unit： 协议数据单元，在一个传输单元中的有效传输数据）能够传输的最大数据量（多少字节可以一次性传输到对方）。
* MTU 交换是为了在...
What are the differences between virtual memory and physical memory?
...r head around have to do with specific implementations of virtual memory, most likely paging. There is no one way to do paging - there are many implementations and the one your textbook describes is likely not the same as the one that appears in real OSes like Linux/Windows - there are probably subt...