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How to read the RGB value of a given pixel in Python?

If I open an image with open("image.jpg") , how can I get the RGB values of a pixel assuming I have the coordinates of the pixel? ...
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Add unique constraint to combination of two columns

I have a table and, somehow, the same person got into my Person table twice. Right now, the primary key is just an autonumber but there are two other fields that exist that I want to force to be unique. ...
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GlobalConfiguration.Configure() not present after Web API 2 and .NET 4.5.1 migration

I recently started following this guide to migrate my project to .NET 4.5.1 and Web Api 2. 11 Answers ...
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Font Awesome not working, icons showing as squares

So I'm trying to prototype a marketing page and I'm using Bootstrap and the new Font Awesome file. The problem is that when I try to use an icon, all that gets rendered on the page is a big square. ...
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Checking if a variable is not nil and not zero in ruby

I am using the following code to check if a variable is not nil and not zero 18 Answers ...
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List of special characters for SQL LIKE clause

What is the complete list of all special characters for a SQL (I'm interested in SQL Server but other's would be good too) LIKE clause? ...
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Django - iterate number in for loop of a template

I have the following for loop in my django template displaying days. I wonder, whether it's possible to iterate a number (in the below case i) in a loop. Or do I have to store it in the database and then query it in form of days.day_number? ...
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How to compare two strings in dot separated version format in Bash?

Is there any way to compare such strings on bash, e.g.: 2.4.5 and 2.8 and 2.4.5.1 ? 29 Answers ...
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Setting custom UITableViewCells height

I am using a custom UITableViewCell which has some labels, buttons and image views to be displayed. There is one label in the cell whose text is a NSString object and the length of string could be variable. Due to this, I cannot set a constant height to the cell in the UITableView 's heightForCe...
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How to add title to subplots in Matplotlib?

I have one figure which contains many subplots. 7 Answers 7 ...