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Determine if variable is defined in Python [duplicate]

... phoenix 3,20611 gold badge2727 silver badges3131 bronze badges answered Oct 20 '09 at 5:07 Alex MartelliAlex ...
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Error installing mysql2: Failed to build gem native extension

... 923 On Ubuntu/Debian and other distributions using aptitude: sudo apt-get install libmysql-ruby lib...
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How to Sign an Already Compiled Apk

... 293 create a key using keytool -genkey -v -keystore my-release-key.keystore -alias alias_name -key...
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What's HTML character code 8203?

What does the character code (HTML) ​ ? I found it in one of my jQuery scripts and wondered what it was.. 8 Answ...
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How to add a delay for a 2 or 3 seconds [closed]

...AlldigEmAll 51.9k99 gold badges106106 silver badges131131 bronze badges 13 ...
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ruby on rails f.select options with custom attributes

... 356 Rails CAN add custom attributes to select options, using the existing options_for_select helpe...
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How do I query using fields inside the new PostgreSQL JSON datatype?

... 3 Answers 3 Active ...
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TypeError: sequence item 0: expected string, int found

... 38 Can also use .join(map(str, value_list)) – BallpointBen May 17 '18 at 13:37 ...
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is there an easy way to get the http status code in the failure block from AFHTTPClient?

... 136 Ok, found the answer with the operation object failure:^(AFHTTPRequestOperation *operation, NS...
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Synchronous request in Node.js

If I need to call 3 http API in sequential order, what would be a better alternative to the following code: 18 Answers ...