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How to “test” NoneType in python?

I have a method that sometimes returns a NoneType value. So how can I question a variable that is a NoneType? I need to use if method, for example ...
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How do you perform a left outer join using linq extension methods

Assuming I have a left outer join as such: 7 Answers 7 ...
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Coding Conventions - Naming Enums

Is there a convention for naming enumerations in Java? 7 Answers 7 ...
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Why can a class not be defined as protected?

Why can we not define a class as protected ? 12 Answers 12 ...
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Why isn't sizeof for a struct equal to the sum of sizeof of each member?

Why does the sizeof operator return a size larger for a structure than the total sizes of the structure's members? 12 Ans...
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How do I create a namespace package in Python?

In Python, a namespace package allows you to spread Python code among several projects. This is useful when you want to release related libraries as separate downloads. For example, with the directories Package-1 and Package-2 in PYTHONPATH , ...
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Better way to sum a property value in an array

I have something like this: 16 Answers 16 ...
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C library function to perform sort

Is there any library function available in C standard library to do sort? 7 Answers 7...
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Actual meaning of 'shell=True' in subprocess

I am calling different processes with the subprocess module. However, I have a question. 5 Answers ...
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Optimizing away a “while(1);” in C++0x

Updated, see below! 8 Answers 8 ...