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Simple argparse example wanted: 1 argument, 3 results
The documentation for the argparse python module , while excellent I'm sure, is too much for my tiny beginner brain to grasp right now. I don't need to do math on the command line or meddle with formatting lines on the screen or change option characters. All I want to do is "If arg is A, do this...
How to set up Spark on Windows?
...d add %SCALA_HOME%\bin in PATH variable in environment variables.
Install Python 2.6 or later from Python Download link.
Download SBT. Install it and set SBT_HOME as an environment variable with value as <<SBT PATH>>.
Download winutils.exe from HortonWorks repo or git repo. Since we d...
How do I set a conditional breakpoint in gdb, when char* x points to a string whose value equals “he
...ebugging multithreaded processes.
Note your GDB needs to be compiled with Python support, which is not an issue with current linux distros. To be sure, you can check it by running show configuration inside GDB and searching for --with-python. This little oneliner does the trick, too:
$ gdb -n -quie...
What's the difference between eval, exec, and compile?
I've been looking at dynamic evaluation of Python code, and come across the eval() and compile() functions, and the exec statement.
...
为AppInventor2开发自己的拓展(Extension) - App Inventor 2 拓展 - 清泛IT社区，为创新赋能！
...cmd 命令行输入ant命令出现以上结果证明配置成功。
源码下载https://github.com/mit-cml/appinventor-sources国内下载非常非常缓慢，这个项目比较大，也许2天都下载不完，不过没关系，我们早已提供已下载好的工程源码，关注页面顶部公...
Slow Requests on Local Flask Server
...g webservers.
Update (2020-07-25): It looks like gevent started supporting python3 5 years ago, shortly after I commented that it didn't, so you can use gevent now.
gevent
You can install gevent through pip with the command pip install gevent or pip3 with the command pip3 install gevent. Instruction...
App Inventor 2 OCR 自研拓展：离线图片文字识别（Tesseract 5） · App Inventor 2 中文网
...一句话生成 App 鸿蒙 · 一套积木，多端原生打包！ 下载 AI2伴侣 · 安卓/鸿蒙/iOS aia 源码商店 中文社区 中文教育版 各版本对比 关于 关于我们 发布日志 服务条款 ...
Check if a program exists from a Makefile
...
is this what you did?
check: PYTHON-exists
PYTHON-exists: ; @which python > /dev/null
mytarget: check
.PHONY: check PYTHON-exists
credit to my coworker.
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Autocompletion in Vim
....
In addition to the above, YCM also provides semantic completion for C#, Python, Go, TypeScript etc. It also provides non-semantic, identifier-based completion for languages for which it doesn't have semantic support.
shar...
Print number of keys in Redis
...ndom, then checking what fraction of them matches the pattern.
Example in python; counting all keys starting with prefix_:
import redis
r = redis.StrictRedis(host = 'localhost', port=6379)
iter=1000
print 'Approximately', r.dbsize() * float(sum([r.randomkey().startswith('prefix_') for i in xrange(...