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GestureDetector 手势检测拓展：旋转、缩放和滑动手势检测，自定义手势识别...
...图缩放、游戏控制等需要手势交互的场景。
.aix 拓展下载：
cn.fun123.GestureDetector.aix
基本用法
旋转/缩放（绑定到 Canvas）：
在设计器中拖入 Canvas 画布组件
拖入 RotationDetector 或 ScaleDetector 组件
在 Screen...
python multithreading wait till all threads finished
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In Python3, since Python 3.2 there is a new approach to reach the same result, that I personally prefer to the traditional thread creation/start/join, package concurrent.futures: https://docs.python.org/3/library/concurrent.futu...
Regex to check whether a string contains only numbers [duplicate]
...ct malformed octal, I should match valid hex and decide whether to include Python3/Java numbers like 123_456 or C++ 123'456. \d+ seems like a middle ground in the absence of more context like a specific programming or human language and was strongly suggested by the author's first attempt.
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Unix command-line JSON parser? [closed]
...u have the option to sort by key explicitly:
$ echo '{"foo":1, "bar":2}' | python3 -m json.tool --sort-keys
{
"bar": 2,
"foo": 1
}
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fol...
Get list from pandas DataFrame column headers
...posted so far, so I'll just leave this here.
Extended Iterable Unpacking (python3.5+): [*df] and Friends
Unpacking generalizations (PEP 448) have been introduced with Python 3.5. So, the following operations are all possible.
df = pd.DataFrame('x', columns=['A', 'B', 'C'], index=range(5))
df
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retrieve links from web page using python and BeautifulSoup [closed]
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Updated code for python3 and latest bs4 - gist.github.com/PandaWhoCodes/7762fac08c4ed005cec82204d7abd61b
– Ashish Cherian
Sep 30 '19 at 6:01
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How can I check if an ip is in a network in Python?
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For python3
import ipaddress
ipaddress.IPv4Address('192.168.1.1') in ipaddress.IPv4Network('192.168.0.0/24')
ipaddress.IPv4Address('192.168.1.1') in ipaddress.IPv4Network('192.168.0.0/16')
Output :
False
True
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Format floats with standard json module
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In Python3 it gives "Map object is not JSON serializable" error, but you can resolve converting the map() to a list with list( map(pretty_floats, obj) )
– Guglie
Oct 11 '18 at 23:54
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How to get the home directory in Python?
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The pathlib.Path.home() is available from Python3.5 onwards (docs.python.org/3/library/pathlib.html#pathlib.Path.home)
– Ivan De Paz Centeno
Oct 4 '17 at 14:24
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Concatenating string and integer in python
..."string"
i = 0
print (s + repr(i))
The above code snippet is written in Python3 syntax but the parentheses after print were always allowed (optional) until version 3 made them mandatory.
Hope this helps.
Caitlin
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