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Hexadecimal To Decimal in Shell Script
...le 'print hex("FF");'
255
with printf :
$ printf "%d\n" 0xFF
255
with python:
$ python -c 'print(int("FF", 16))'
255
with ruby:
$ ruby -e 'p "FF".to_i(16)'
255
with node.js:
$ nodejs <<< "console.log(parseInt('FF', 16))"
255
with rhino:
$ rhino<<EOF
print(parseInt('FF',...
How can I save an image with PIL?
I have just done some image processing using the Python image library (PIL) using a post I found earlier to perform fourier transforms of images and I can't get the save function to work. The whole code works fine but it just wont save the resulting image:
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What can MATLAB do that R cannot do? [closed]
...
In my experience moving from MATLAB to Python is an easier transition - Python with numpy/scipy is closer to MATLAB in terms of style and features than R. There are also open source direct MATLAB clones Octave and Scilab.
There is certainly much that MATLAB can d...
Flatten list of lists [duplicate]
I'm having a problem with square brackets in Python. I wrote a code that produces the following output:
4 Answers
...
Highlight bash/shell code in markdown
..._US.twitter.txt
```
you can also use:
engine='sh' for shell
engine='python' for python
engine='perl', engine='haskell' and a bunch of other C-like languages and even gawk, awk etc.
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gunicorn autoreload on source change
...'echo "${watch_src_path}" && kill -HUP `cat gunicorn.pid`' . &
python manage.py run_gunicorn 127.0.0.1:80 --pid=gunicorn.pid
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Why does running the Flask dev server run itself twice?
...he issue occurs. Also try running a minimal example that fails in multiple python versions, that may have been an issue. I have since migrated my project to Java and SparkJava instead of python and flask, so I don't remember exactly what fixed the issue.
– Carvell Wakeman
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Django: How to completely uninstall a Django app?
...te the app directory from your project directory or other location on your PYTHONPATH where it resides.
(optional) If the app stored media files, cache files, or other temporary files somewhere, you may want to delete those as well. Also be wary of lingering session data that might be leftover from ...
Count occurrences of a char in a string using Bash
...le we wanna count t
echo "test" | awk -v RS='t' 'END{print NR-1}'
or in python
python -c 'print "this is for test"
Why is the apt-get function not working in the terminal on Mac OS X v10.9 (Mavericks)?
...called Homebrew that is used instead.
This command would be:
brew install python
Use Homebrew to install packages that you would otherwise use apt-get for.
The page I linked to has an up-to-date way of installing homebrew, but at present, you can install Homebrew as follows:
Type the following in...