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Best practice for Python assert

... To be able to automatically throw an error when x become less than zero throughout the function. You can use class descriptors. Here is an example: class LessThanZeroException(Exception): pass class variable(object): def __init__(sel...
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How to grep for two words existing on the same line? [duplicate]

How do I grep for lines that contain two input words on the line? I'm looking for lines that contain both words, how do I do that? I tried pipe like this: ...
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Sending and Receiving SMS and MMS in Android (pre Kit Kat Android 4.4)

I have figured out how to send and receive SMS messages. To send SMS messages I had to call the sendTextMessage() and sendMultipartTextMessage() methods of the SmsManager class. To receive SMS messages, I had to register a receiver in the AndroidMainfest.xml file. Then I had to override t...
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CA2202, how to solve this case

Can anybody tell me how to remove all CA2202 warnings from the following code? 12 Answers ...
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How to set environment variables in Python?

I need to set some environment variables in the Python script and I want all the other scripts that are called from Python to see the environment variables' set. ...
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How to unzip a file using the command line? [closed]

Which commands can be used via the command line to unzip a file? Preferably something built into Windows or open source/free tools. ...
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std::unique_lock or std::lock_guard?

...s other features that allow it to e.g.: be constructed without locking the mutex immediately but to build the RAII wrapper (see here). std::lock_guard also provides a convenient RAII wrapper, but cannot lock multiple mutexes safely. It can be used when you need a wrapper for a limited scope, e.g.:...
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Iterate over model instance field names and values in template

I'm trying to create a basic template to display the selected instance's field values, along with their names. Think of it as just a standard output of the values of that instance in table format, with the field name (verbose_name specifically if specified on the field) in the first column and the ...
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Round to at most 2 decimal places (only if necessary)

I'd like to round at most 2 decimal places, but only if necessary . 79 Answers 79 ...
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Swift: #warning equivalent

Does Swift have a #warning equivalent? It's simply used to show a warning in Xcode's own GUI 14 Answers ...