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... ai2 Starter模拟器中AI伴侣过旧，如何升级到最新版？ 可以升级。有条件的话建议使用手机，但是对于学生教...
Get the first item from an iterable that matches a condition
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My view is a little different than the time I wrote the comment. I see your point. That's being said, having to handle StopIteration is really not pretty. Better use a method.
– guyarad
Jan 26 '18 at 3:25
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Make HTML5 video poster be same size as video itself
Does anyone know how to resize the HTML5 video poster such that it fits the exact dimensions of the video itself?
13 Answer...
Proper indentation for Python multiline strings
...than the textwrap equivalent one and in my tests in ipython it is indeed 3 times faster on average with my quick tests. It also has the benefit that it discards any leading blank lines this allows you to be flexible in how you construct the string:
"""
line 1 of string
line 2 of string
"""
"""\
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Change the mouse cursor on mouse over to anchor-like style
...ve it once the user hovers out because the cursor wouldn't be seen at that time anyway.
– Devin Burke
Aug 26 '11 at 3:16
2
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How do I change read/write mode for a file using Emacs?
If a file is set to read only mode, how do I change it to write mode and vice versa from within Emacs?
9 Answers
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What does the * * CSS selector do?
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Just like any other time you put two selectors one after another (for example li a), you get the descendant combinator. So * * is any element that is a descendant of any other element — in other words, any element that isn't the root element o...
What does enumerable mean?
...ough it looks like something I could chew on for quite awhile if I had the time. :-)
– Gabriel Kunkel
Dec 4 '15 at 0:14
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show 1 more commen...
When I catch an exception, how do I get the type, file, and line number?
Catching an exception that would print like this:
4 Answers
4
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method of iterating over sqlalchemy model's defined columns?
I've been trying to figure out how to iterate over the list of columns defined in a SQLAlchemy model. I want it for writing some serialization and copy methods to a couple of models. I can't just iterate over the obj.__dict__ since it contains a lot of SA specific items.
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