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how to change default python version?
...ption once. I have chosen to leave it as is where "python --version" shows 2.7.12 and "python3 --version" shows 3.7.0. I agree with dmeyerson above that the question is how to change it. Your advice is good but there is a way to change it if you must (or really, really want to).
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Use curly braces to initialize a Set in Python
...yntax:
my_set = {'foo', 'bar', 'baz'}
It's not available before Python 2.7
There's no way to express an empty set using that syntax (using {} creates an empty dict)
Those may or may not be important to you.
The section of the docs outlining this syntax is here.
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What is the best Battleship AI?
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Here is my entry! (The most naive solution possible)
"Random 1.1"
namespace Battleship
{
using System;
using System.Collections.ObjectModel;
using System.Drawing;
public class RandomOpponent : IBattleshipOpponent
{
public s...
App Inventor 2 LLMAI2Ext 自研拓展：接入DeepSeek、Kimi、通义千问...等国...
... 教育 入门必读 中文教程 IoT专题 AI2拓展 ChatGPT接入 Aia Store 开通VIP 搜索 App Inventor 2 LLMAI2Ext 自研拓展：接...
AI2 Keep Awake
...r the CPU to be constantly active. Instead, an alarm can be used (see UrsAI2Alarm ). Motivation For some projects it is necessary to prevent the associated app from being deactivated by the operating system. A typical example would be that sensor data should be sent regularly to an MQTT bro...
How do I get NuGet to install/update all the packages in the packages.config?
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You can use nuget.exe to restore your packages or with NuGet 2.7, or above, installed you can simply compile your solution in Visual Studio, which will also restore the missing packages.
For NuGet.exe you can run the following command for each project.
nuget install packages.config
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搭建高可用mongodb集群（二）—— 副本集 - 大数据 & AI - 清泛网 - 专注C/...
...conds
Sun Dec 29 22:03:05.499 [rsHealthPoll] DBClientCursor::init call() failed
Sun Dec 29 22:03:05.499 [rsHealthPoll] replset info 192.168.1.138:27017 heartbeat failed, retrying
Sun Dec 29 22:03:05.501 [rsHealthPoll] replSet info 192.168.1.138:27017 is down (or slow to respond):
Sun Dec 29 22:0...
I can't install python-ldap
...ioned to install into a virtualenv: How to install python-ldap on a python 2.7 virtualenv on windows without compiling (see update 2)
– Dave
Oct 29 '13 at 17:11
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Why do we check up to the square root of a prime number to determine if it is prime?
...es this might be useful, but this all heavily depends on implementation details (programming language, hardware, data types, libraries), none of which are known in this general consideration.
– Sven Marnach
Aug 3 at 9:38
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hexadecimal string to byte array in python
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>>> hex_string = "deadbeef"
Convert it to a string (Python ≤ 2.7):
>>> hex_data = hex_string.decode("hex")
>>> hex_data
"\xde\xad\xbe\xef"
or since Python 2.7 and Python 3.0:
>>> bytes.fromhex(hex_string) # Python ≥ 3
b'\xde\xad\xbe\xef'
>>> ...