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App Inventor 2 UrsPahoMqttClient 拓展 - 物联网轻量级MQTT协议 · App Inventor 2 中文网
...《App Inventor 2 MQTT拓展入门（保姆级教程）》
最新版拓展下载：
de.ullisroboterseite.ursai2pahomqtt.aix
MQTT（Message Queuing Telemetry Transport：消息队列遥测传输）
MQTT 发明于 1999 年，为物联网设计的轻量级协议，基于TCP协议实现。
M...
How to configure Mac OS X term so that git has color? [closed]
... .bashrc works too? On my mac it's .bash_profile, I know it's .bashrc on Linux but I figured it was different on mac with the whole BSD thing (Also LSCOLORS is different on Linux and BSD/Mac, it seems).
– Jorge Israel Peña
Jul 20 '09 at 22:06
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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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How to rename with prefix/suffix?
... command, but it is not routinely available on Unix systems (as opposed to Linux systems, say, or Cygwin - on both of which, rename is an executable rather than a script). That version of rename has a fairly limited functionality:
rename from to file ...
It replaces the from part of the file nam...
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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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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How do I enable the column selection mode in Eclipse?
...elect use:
Windows:
Alt+Shift+A
Mac: command + option + A
Linux-based OS:
Alt+Shift+A
To deactivate, press the keys again.
This information was taken from DJ's Java Blog.
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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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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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Removing duplicate rows in Notepad++
...on't care about row order (which I don't think you do), then you can use a Linux/FreeBSD/Mac OS X/Cygwin box and do:
$ cat yourfile | sort | uniq > yourfile_nodups
Then open the file again in Notepad++.
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