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在APP Inventor的BLE组件使用RequestMTU方法之后，发送的字符数依旧限制在2...
目前APP是能连接上蓝牙，也能传输数据，但是发送和接受的数据都是20字节的分包。使用BLE调试宝，在里面修改MTU，返回的值是512，并且是修改成功的，但是在编程中使用RequestMTU方式设置512,，并且读取返回值也是512，然后调用...
“AppInventor学院”App国内各大市场上架之旅 - App应用开发 - 清泛IT社区...
...政策》在线网页url，告知用户你如何访问及访问隐私权限的用途，可以参考：https://www.fun123.cn/static/privacy_policy.html
app启动时必须弹窗，展示上面的隐私政策网页，用户点同意才能继续，否则直接退出app。不仅如此，还需要在Ap...
How to subtract a day from a date?
I have a Python datetime.datetime object. What is the best way to subtract one day?
6 Answers
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Understanding dict.copy() - shallow or deep?
...w copy of the dictionary. Same goes for the book I am following (Beazley's Python Reference), which says:
7 Answers
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CSV new-line character seen in unquoted field error
...n OSX. Hope it works across other platforms too...
– python1981
Aug 2 '17 at 4:36
Great answer. Using - "dialect=csv.e...
Aliases in Windows command prompt
...;"C:\Program Files\Sublime Text 2\"
:: Add to path by command
DOSKEY add_python26=set PATH=%PATH%;"C:\Python26\"
DOSKEY add_python33=set PATH=%PATH%;"C:\Python33\"
:: Commands
DOSKEY ls=dir /B
DOSKEY sublime=sublime_text $*
::sublime_text.exe is name of the executable. By adding a temporar...
Format output string, right alignment
...d here's how to do it using the old % syntax (useful for older versions of Python that don't support str.format):
line_new = '%12s %12s %12s' % (word[0], word[1], word[2])
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How can I tell PyCharm what type a parameter is expected to be?
...o reStructuredText and docstring conventions (PEP 257).
Another option is Python 3 annotations.
Please refer to the PyCharm documentation section for more details and samples.
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AppInventor2中的二进制数据以什么样的形式传递？字节列表、字节数组是什么...
1、byte[] 类型（字节数组）的字段：App Inventor 无法直接处理字节数组，但它们可以作为扩展之间的通用 Object 类型变量进行交换。
MQTT拓展中的字节数组的处理方式就是这种，直接转换成byte[]：
@SimpleFunction(description = "Publishe...
What is the preferred syntax for initializing a dict: curly brace literals {} or the dict() function
I'm putting in some effort to learn Python, and I am paying close attention to common coding standards. This may seem like a pointlessly nit-picky question, but I am trying to focus on best-practices as I learn, so I don't have to unlearn any 'bad' habits.
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