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Accessing dict_keys element by index in Python3
...
Call list() on the dictionary instead:
keys = list(test)
In Python 3, the dict.keys() method returns a dictionary view object, which acts as a set. Iterating over the dictionary directly also yields keys, so turning a dictionary into a list results in a list of all the keys...
How to debug a bash script? [closed]
...teresting
https://github.com/koalaman/shellcheck
A little example:
$ cat test.sh
ARRAY=("hello there" world)
for x in $ARRAY; do
echo $x
done
$ shellcheck test.sh
In test.sh line 3:
for x in $ARRAY; do
^-- SC2128: Expanding an array without an index only gives the first element.
...
Importing modules from parent folder
....py
I call the . the root folder, and in my case it is located in C:\tmp\test_imports.
Steps
1) Add a setup.py to the root folder
The contents of the setup.py can be simply
from setuptools import setup, find_packages
setup(name='myproject', version='1.0', packages=find_packages())
Basically...
Python argparse: default value or specified value
...nargs='?', const=1, type=int)
args = parser.parse_args()
print(args)
% test.py
Namespace(example=None)
% test.py --example
Namespace(example=1)
% test.py --example 2
Namespace(example=2)
nargs='?' means 0-or-1 arguments
const=1 sets the default when there are 0 arguments
type=int converts ...
In Django, how do I check if a user is in a certain group?
...']).exists()
Note that those functions can be used with the @user_passes_test decorator to manage access to your views :
from django.contrib.auth.decorators import login_required, user_passes_test
@login_required
@user_passes_test(is_member) # or @user_passes_test(is_in_multiple_groups)
def myvie...
Using os.walk() to recursively traverse directories in Python
...
┃ ┣━modules.xml
┃ ┣━vcs.xml
┃ ┗━workspace.xml
┣━[test1]
┃ ┗━test1.txt
┣━[test2]
┃ ┣━[test2-2]
┃ ┃ ┗━[test2-3]
┃ ┃ ┣━test2
┃ ┃ ┗━test2-3-1
┃ ┗━test2
┣━folder_tree_maker.py
┗━tree.py
...
What are the differences between the threading and multiprocessing modules?
...on for this, there must be other Python inefficiencies coming into play.
Test code:
#!/usr/bin/env python3
import multiprocessing
import threading
import time
import sys
def cpu_func(result, niters):
'''
A useless CPU bound function.
'''
for i in range(niters):
result = ...
How to suppress Update Links warning?
...4 virtual machine powered by VMWare (this is usual routine for my everyday testing tasks, so I have many of them deployed).
Then, I changed only the following Excel options (i.e. all the other are left as is after installation):
Advanced > General > Ask to update automatic links checked:
...
Mocha / Chai expect.to.throw not catching thrown errors
I'm having issues getting Chai's expect.to.throw to work in a test for my node.js app. The test keeps failing on the thrown error, but If I wrap the test case in try and catch and assert on the caught error, it works.
...
chai test array equality doesn't work as expected
...
This is how to use chai to deeply test associative arrays.
I had an issue trying to assert that two associative arrays were equal. I know that these shouldn't really be used in javascript but I was writing unit tests around legacy code which returns a refere...