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Random number from a range in a Bash Script
...
and here's one with Python
randport=$(python -S -c "import random; print random.randrange(2000,63000)")
and one with awk
awk 'BEGIN{srand();print int(rand()*(63000-2000))+2000 }'
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How can I obtain the element-wise logical NOT of a pandas Series?
...s
Out[8]:
0 False
1 False
2 True
3 False
dtype: bool
Using Python2.7, NumPy 1.8.0, Pandas 0.13.1:
In [119]: s = pd.Series([True, True, False, True]*10000)
In [10]: %timeit np.invert(s)
10000 loops, best of 3: 91.8 µs per loop
In [11]: %timeit ~s
10000 loops, best of 3: 73.5 µs ...
Can I serve multiple clients using just Flask app.run() as standalone?
... yourself is probably not going to get you very far either, because of the Python GIL.
That said, you do still have some good options. Gunicorn is a solid, easy-to-use WSGI server that will let you spawn multiple workers (separate processes, so no GIL worries), and even comes with asynchronous work...
Convert xlsx to csv in Linux with command line
...equire dozens of dependencies that you also need to install.
I found this Python alternative:
https://github.com/dilshod/xlsx2csv
$ easy_install xlsx2csv
$ xlsx2csv file.xlsx > newfile.csv
Took 2 seconds to install and works like a charm.
If you have multiple sheets you can export all at o...
Converting JSON String to Dictionary Not List
...n ' single quotes.
Your JSON dump.txt File:
{"test":"1", "test2":123}
Python Script:
import json
with open('/your/path/to/a/dict/dump.txt') as handle:
dictdump = json.loads(handle.read())
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RegEx: Grabbing values between quotation marks
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With python this raises an error: sre_constants.error: cannot refer to open group
– a1an
Jun 12 '15 at 10:43
1...
Single Line Nested For Loops
Wrote this function in python that transposes a matrix:
5 Answers
5
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How do I do an OR filter in a Django query?
...here) as bitwise OR: stackoverflow.com/questions/5988665/pipe-character-in-python
– e100
Mar 26 '15 at 18:06
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How do I write good/correct package __init__.py files
...uide import statements without automatically importing modules
http://docs.python.org/tutorial/modules.html#importing-from-a-package
using __all__ and import * is redundant, only __all__ is needed
I think one of the most powerful reasons to use import * in an __init__.py to import packages is to b...
How do I debug Node.js applications?
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npm install -g profiler complains about missing python on windows 7. I tried to set python=C:\Python34\, but this gives a crash.
– Stepan Yakovenko
Sep 8 '14 at 12:45
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