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AttributeError: 'module' object has no attribute 'tests'

...oblem with your suggestion is that you imported death star . OK in console for experiments, but in code, always import just the names needed. – Peter M. - stands for Monica Jan 17 '18 at 19:54 ...
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How does collections.defaultdict work?

...n arbitrary "callable" object, which includes function and type objects). For the first example, default items are created using int(), which will return the integer object 0. For the second example, default items are created using list(), which returns a new empty list object. ...
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Square retrofit server mock for testing

What's the best way to mock a server for testing when using the square retrofit framework . 11 Answers ...
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What is the difference between a field and a property?

...her) - which is a shorthand syntax // used to generate a private field for you public int AnotherProperty{get;set;} } @Kent points out that Properties are not required to encapsulate fields, they could do a calculation on other fields, or serve other purposes. @GSS points out that you ca...
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What's Mongoose error Cast to ObjectId failed for value XXX at path “_id”?

...rameter to the type of the model's _id field so that it can properly query for the matching doc. This is an ObjectId but "foo" is not a valid ObjectId so the cast fails. This doesn't happen with 41224d776a326fb40f000001 because that string is a valid ObjectId. One way to resolve this is to add a ...
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How can I prevent SQL injection in PHP?

... database server separately from any parameters. This way it is impossible for an attacker to inject malicious SQL. You basically have two options to achieve this: Using PDO (for any supported database driver): $stmt = $pdo->prepare('SELECT * FROM employees WHERE name = :name'); $stmt->ex...
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Why does C++11 not support designated initializer lists as C99? [closed]

... Please show a reference link for what you say is the reason for C++ to not have designated initializers. I can't remember having ever seen the proposal for it. – Johannes Schaub - litb Sep 11 '13 at 19:38 ...
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Link to all Visual Studio $ variables

...ng a look at $(Configuration) , $(ProjectDir) etc. in Visual Studio 2008 for Prebuild events. 7 Answers ...
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Unsupported major.minor version 52.0 [duplicate]

... IntelliJ IDEA, Go to Maven Settings → Maven → Importing. Set the JDK for importer to 1.8. Go to Maven Settings → Maven → Runner. Set the JRE to 1.8. Go to menu File* → Project Structure → SDKs. Make sure the JDK home path is set to 1.8. Restart IntelliJ IDEA. Another approach which mi...
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No module named _sqlite3

...l set that python version to be the system-wide standard, which can have unforseen consequences. If you run this command on your workstation, you'll probably want to have it installed alongside the existing python, which can be done with sudo make altinstall. ...