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多媒体组件 · App Inventor 2 中文网
...，推荐使用“讯飞语音+”识别引擎，识别率较高，点此下载apk安装。
安装完成后无需设置，当触发需要识别语音时，系统会弹出对话框让你选择使用哪个识别引擎，这时选择“讯飞语音+”，点“始终”就OK了。
...
Creating a singleton in Python
...s[cls]
class Logger(object):
__metaclass__ = Singleton
Or in Python3
class Logger(metaclass=Singleton):
pass
If you want to run __init__ every time the class is called, add
else:
cls._instances[cls].__init__(*args, **kwargs)
to the if statement in Singleton.__...
Saving an Object (Data persistence)
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Quick example using company1 from your question, with python3.
import pickle
# Save the file
pickle.dump(company1, file = open("company1.pickle", "wb"))
# Reload the file
company1_reloaded = pickle.load(open("company1.pickle", "rb"))
However, as this answer noted, pickle o...
Shell脚本编程30分钟入门 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...脚本实在太啰嗦，你只是想做一些备份文件、安装软件、下载数据之类的事情，学着使用sh，bash会是一个好主意。
shell只定义了一个非常简单的编程语言，所以，如果你的脚本程序复杂度较高，或者要操作的数据结构比较复杂...
List changes unexpectedly after assignment. How do I clone or copy it to prevent this?
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Actually it seems that currently, python3.8, .copy() is slightly faster than slicing. See below @AaronsHall answer.
– loved.by.Jesus
Apr 24 at 8:11
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Execution of Python code with -m option or not
... sys.path.
so
python -m pdb
is roughly equivalent to
python /usr/lib/python3.5/pdb.py
(assuming you don't have a package or script in your current directory called pdb.py)
Explanation:
Behavior is made "deliberately similar to" scripts.
Many standard library modules contain code that i...
Manually raising (throwing) an exception in Python
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In Python3 there are 4 different syntaxes for rasing exceptions:
1. raise exception
2. raise exception (args)
3. raise
4. raise exception (args) from original_exception
1. raise exception vs. 2. raise exception (args)
...
来自微软的一手内幕：Windows 10是怎么出炉的 - 创意 - 清泛网 - 专注C/C++及内核技术
...它们整合到一起。不过这不意味着亦可以直接通过Xbox One下载各种应用程序。“想要在一个商店里就享受到所有的内容的话，可能还得再等等。”Spencer说，明年Windows 10的应用可以在Xbox One上运行的时候我们就等到头了。
另外...
What is the purpose of the -m switch?
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@arifwn Running Python3 requires a slight update as python -m http.server and this is still awesome!
– Kit Roed
Feb 16 '16 at 15:32
...
Is there a difference between “==” and “is”?
...rt sys;tt=sys.argv[1];print(tt is "foo", tt == "foo", id(tt)==id("foo"))'| python3 - foo output: False True False.
– ahuigo
Jul 23 '18 at 12:38
...