大约有 10,151 项符合查询结果(耗时:0.0198秒) [XML]

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cv2.imshow command doesn't work properly in opencv-python

I'm using opencv 2.4.2, python 2.7 The following simple code created a window of the correct name, but its content is just blank and doesn't show the image: ...
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Extracting specific columns in numpy array

This is an easy question but say I have an MxN matrix. All I want to do is extract specific columns and store them in another numpy array but I get invalid syntax errors. Here is the code: ...
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Assign variable value inside if-statement [duplicate]

I was wondering whether it is possible to assign a variable a value inside a conditional operator like so: 9 Answers ...
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Lists: Count vs Count() [duplicate]

Given a list, which method is preferred to determine the number of elements inside? 4 Answers ...
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Verifying that a string contains only letters in C#

I have an input string and I want to verify that it contains: 10 Answers 10 ...
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Get the first key name of a javascript object [duplicate]

Let's assume we have the following javascript object: 8 Answers 8 ...
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Checking if jquery is loaded using Javascript

I am attempting to check if my Jquery Library is loaded onto my HTML page. I am checking to see if it works, but something is not right. Here is what I have: ...
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What does “export” do in shell programming? [duplicate]

As far as I can tell, variable assignment is the same whether it is or is not preceded by "export". What's it for? 3 Answer...
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How to install lxml on Ubuntu

I'm having difficulty installing lxml with easy_install on Ubuntu 11. 11 Answers 11 ...
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Combining two lists and removing duplicates, without removing duplicates in original list

I have two lists that i need to combine where the second list has any duplicates of the first list ignored. .. A bit hard to explain, so let me show an example of what the code looks like, and what i want as a result. ...