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Conditional import of modules in Python
In my program I want to import simplejson or json based on whether the OS the user is on is Windows or Linux. I take the OS name as input from the user. Now, is it correct to do the following?
...
BLE协议—广播和扫描 - 创客硬件开发 - 清泛IT社区，为创新赋能！
广播和扫描在无线通信中是非常重要的一个技术点。在BLE中，扫描和广播是通信的基础，用户可以直接用扫描和广播进行数据的传输（数据量不大，功耗要求较高的情况下），也可以在广播和扫描的基础上进行连接后点对点通信...
实战做项目如何选择开源许可协议（一）-了解协议 - 开源 & Github - 清泛网...
...。前段时间有件关于开源软件的事情挺热闹的，关于国内一个开发者把自己作品开源出来被别的公司的人拿去包装成自己的产品高价卖出去。大部分做开源软件的开发者都不太怎么关注版权这些，具体微博如下：
hoowa_sun：
做...
How to rename a file using Python
...
Use os.rename:
import os
os.rename('a.txt', 'b.kml')
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Excluding directories in os.walk
I'm writing a script that descends into a directory tree (using os.walk()) and then visits each file matching a certain file extension. However, since some of the directory trees that my tool will be used on also contain sub directories that in turn contain a LOT of useless (for the purpose of thi...
Read text file into string array (and write)
...with Scanner:
package main
import (
"bufio"
"fmt"
"log"
"os"
)
// readLines reads a whole file into memory
// and returns a slice of its lines.
func readLines(path string) ([]string, error) {
file, err := os.Open(path)
if err != nil {
return nil, err
}
defe...
使用TokuMX配置Replica Set集群 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
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1、集群由多个TokuMX 实例构成。
2、多个实例中，只有一个实例是Primary角色，其他都是Secondary角色。
3、默认情况下，只有Primary实例可读可写，Secondary角色不可读写。
4、可以手工配置Secondary实例使之可读。
5、当Primay实例宕...
What's Go's equivalent of argv[0]?
...
import "os"
os.Args[0] // name of the command that it is running as
os.Args[1] // first command line parameter, ...
Arguments are exposed in the os package http://golang.org/pkg/os/#Variables
If you're going to do argument handlin...
Check to see if python script is running
...cleanly, and check for it when you start up.
#/usr/bin/env python
import os
import sys
pid = str(os.getpid())
pidfile = "/tmp/mydaemon.pid"
if os.path.isfile(pidfile):
print "%s already exists, exiting" % pidfile
sys.exit()
file(pidfile, 'w').write(pid)
try:
# Do some actual work her...
After Installing Java JDK 7 For Mac OS X - mvn -version still shows java version 1.6.0_31
Oracle released Java JDK 7 on April 26 for Mac OS X. I followed the install instructions and when I do java -version in a terminal window I get:
...