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How to make vi redraw screen?

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Python equivalent for PHP's implode?

Is there an equivalent for PHP's implode in Python? I've read in and split up a set of delimited words, and now I want to sort them out in random orders and print the words out with spaces in between. ...
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What does a tilde do when it precedes an expression?

I saw it in an answer, and I've never seen it before. 5 Answers 5 ...
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datetime.parse and making it work with a specific format

I have a datetime coming back from an XML file in the format: 2 Answers 2 ...
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Matplotlib: draw grid lines behind other graph elements

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Fastest way to convert an iterator to a list

Having an iterator object, is there something faster, better or more correct than a list comprehension to get a list of the objects returned by the iterator? ...
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How can I rethrow an exception in Javascript, but preserve the stack?

In Javascript, suppose I want to perform some cleanup when an exception happens, but let the exception continue to propagate up the stack, eg: ...
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How to do a less than or equal to filter in Django queryset?

... custom field in each users profile called profile. This field is called level and is an integer between 0-3. 1 Answer ...
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Does a C# app track how long its been running?

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Sass negative variable value?

I have a couple of scss selectors where I use the same amount positive and negative, as in: 3 Answers ...