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Removing duplicates in lists

Pretty much I need to write a program to check if a list has any duplicates and if it does it removes them and returns a new list with the items that weren't duplicated/removed. This is what I have but to be honest I do not know what to do. ...
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Python str vs unicode types

Working with Python 2.7, I'm wondering what real advantage there is in using the type unicode instead of str , as both of them seem to be able to hold Unicode strings. Is there any special reason apart from being able to set Unicode codes in unicode strings using the escape char \ ?: ...
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How to add a separator to a WinForms ContextMenu?

Inside my control, I have: 8 Answers 8 ...
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Should C# methods that *can* be static be static? [closed]

Should C# methods that can be static be static? 21 Answers 21 ...
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What does SynchronizationContext do?

In the book Programming C#, it has some sample code about SynchronizationContext : 8 Answers ...
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Is a URL allowed to contain a space?

Is a URI (specifically an HTTP URL) allowed to contain one or more space characters? If a URL must be encoded, is + just a commonly followed convention, or a legitimate alternative? ...
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Iterate through pairs of items in a Python list [duplicate]

Is it possible to iterate a list in the following way in Python (treat this code as pseudocode)? 5 Answers ...
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In Python, what happens when you import inside of a function? [duplicate]

What are the pros and cons of importing a Python module and/or function inside of a function, with respect to efficiency of speed and of memory? ...
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What are the differences between NP, NP-Complete and NP-Hard?

What are the differences between NP , NP-Complete and NP-Hard ? 11 Answers 11 ...
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What is sharding and why is it important?

I think I understand sharding to be putting back your sliced up data (the shards) into an easy to deal with aggregate that makes sense in the context. Is this correct? ...