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not None test in Python [duplicate]

... 1033 if val is not None: # ... is the Pythonic idiom for testing that a variable is not set t...
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Get selected subcommand with argparse

... | edited Jun 6 '14 at 14:01 Pigueiras 16.8k99 gold badges5757 silver badges8383 bronze badges answered ...
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How to use mod operator in bash?

... Try the following: for i in {1..600}; do echo wget http://example.com/search/link$(($i % 5)); done The $(( )) syntax does an arithmetic evaluation of the contents. share ...
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How can I edit a view using phpMyAdmin 3.2.4?

... answered Dec 1 '10 at 23:02 KyleFarrisKyleFarris 16.1k44 gold badges3737 silver badges4040 bronze badges ...
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AngularJS check if form is valid in controller

... 109 Try this in view: <form name="formName" ng-submit="submitForm(formName)"> <!-- fiel...
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Is there a quick way to delete a file from a Jar / war without having to extract the jar and recreat

... 204 zip -d file.jar unwanted_file.txt jar is just a zip file after all. Definitely much faster th...
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What is the difference between Nexus and Maven?

... 160 Sonatype Nexus and Apache Maven are two pieces of software that often work together but they do ...
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Difference between UIViewContentModeScaleAspectFit and UIViewContentModeScaleToFill?

... EmptyStackEmptyStack 50.2k2020 gold badges141141 silver badges174174 bronze badges ...
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Determine whether an array contains a value [duplicate]

... 1005 var contains = function(needle) { // Per spec, the way to identify NaN is that it is not e...
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what is the difference between ?:, ?! and ?= in regex?

... 160 The difference between ?= and ?! is that the former requires the given expression to match and t...