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Multiprocessing vs Threading Python [duplicate]
...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 = (result * result * i + 2 * ...
How to convert an xml string to a dictionary?
...ing from a JSON/dict, you can use:
try:
basestring
except NameError: # python3
basestring = str
def dict_to_etree(d):
def _to_etree(d, root):
if not d:
pass
elif isinstance(d, basestring):
root.text = d
elif isinstance(d, dict):
...
`from … import` vs `import .` [duplicate]
...
You are using Python3 were urllib in the package. Both forms are acceptable and no one form of import is preferred over the other. Sometimes when there are multiple package directories involved you may to use the former from x.y.z.a import...
App Inventor 2开发计步器与定位器 - App Inventor 2 中文网 - 清泛IT论坛,有思想、有深度
...时,数据依然存储在手机中。【参二】健身宝程序及资源下载AI伴侣最新版(广州版)健身宝(简版)(请右键选择链接另存为)健身宝(扩展版)(请右键选择链接另存为)【参三】我的车在哪儿 1、位置传感器
App Inventor为...
logger configuration to log to file and print to stdout
...output and is easily configurable (also available as Gist):
#!/usr/bin/env python3
# -*- coding: utf-8 -*-
# -------------------------------------------------------------------------------
# -
# Python dual-logging setup...
What is the common header format of Python files?
...
I agree that makes sense if you use any Python 2. For Python3, personally I'm happy to rely on implicit when the default is sensible and universal. We don't explicitly define the meaning of "+" whenever we use it.
– Jonathan Hartley
Jun 16 ...
How to find out the number of CPUs using python
...stem:
taskset -c 0 ./main.py
with the test script:
main.py
#!/usr/bin/env python3
import multiprocessing
import os
print(multiprocessing.cpu_count())
print(os.cpu_count())
print(len(os.sched_getaffinity(0)))
then the output is:
16
16
1
nproc however does respect the affinity by default and:
tas...
what does the __file__ variable mean/do?
...y:
from pathlib import Path
print(__file__)
print(Path(__file__))
Running python3 x.py will output:
/home/aderchox/mytest/y.py
/home/aderchox/mytest/y.py ...
How do you create nested dict in Python?
...y create a new key entry in the dict and cause a lot of havoc.
Here is a Python3 example with nested_dict module:
import nested_dict as nd
nest = nd.nested_dict()
nest['outer1']['inner1'] = 'v11'
nest['outer1']['inner2'] = 'v12'
print('original nested dict: \n', nest)
try:
nest['outer1']['wro...
Getting individual colors from a color map in matplotlib
...e where we make CSV representation for a custom colormap:
#! /usr/bin/env python3
import matplotlib
import numpy as np
vmin = 0.1
vmax = 1000
norm = matplotlib.colors.Normalize(np.log10(vmin), np.log10(vmax))
lognum = norm(np.log10([.5, 2., 10, 40, 150,1000]))
cdict = {
'red':
(
...