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How to list all installed packages and their versions in Python?

Is there a way in Python to list all installed packages and their versions? 11 Answers ...
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In what areas might the use of F# be more appropriate than C#? [closed]

... sweet spot for the language within enterprise software, namely algorithmically complex analysis of large data sets. My experience has been a very positive one. In particular: Units of measure The industry I work in is littered with units. The equations I implemented (often of a geometric nature) d...
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How to make an immutable object in Python?

... Can you use namedtuple internally inside the class instead of instantiating the object externally? I'm very new to python but the advantage to your other answer is that I can have a class hide the details and also have the power of things like optional p...
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Git: How to return from 'detached HEAD' state

...ckout 1.87.1 warning: unable to unlink web/sites/default/default.settings.php: Permission denied ... other warnings ... Note: checking out '1.87.1'. You are in 'detached HEAD' state. You can look around, make experimental changes and commit them, and you can disc...
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What is the difference between _tmain() and main() in C++?

...Now, in UTF-16, the character set used by Windows when Unicode is enabled, all the ASCII characters are represented as the pair of bytes \0 followed by the ASCII value. And since the x86 CPU is little-endian, the order of these bytes are swapped, so that the ASCII value comes first, then followed b...
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Best way to do multiple constructors in PHP

... <?php class Student { public function __construct() { // allocate your stuff } public static function withID( $id ) { $instance = new self(); $instance->loadByID( $id ); return $instance; } public static function withRow( array $row ) { ...
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Difference between spring @Controller and @RestController annotation

... I think @RestController also converts the response to JSON/XML automatically. – arnabkaycee Oct 21 '16 at 13:05 ...
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Elastic Search: how to see the indexed data

...lore your ElasticSearch cluster is to use elasticsearch-head. You can install it by doing: cd elasticsearch/ ./bin/plugin -install mobz/elasticsearch-head Then (assuming ElasticSearch is already running on your local machine), open a browser window to: http://localhost:9200/_plugin/head/ Alte...
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How do I set up email confirmation with Devise?

... 1. Make sure you include confirmable in Model.devise call class User < ActiveRecord::Base devise :database_authenticatable, :confirmable ... end 2. Make sure you add confirmable to the user migration create_table :users do |t| t.database_authenticatable t.confirmabl...
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Reimport a module in python while interactive

... Redefinitions of names will override the old definitions, so this is generally not a problem, but if the new version of a module does not define a name that was defined by the old version, the old definition is not removed. If a module imports objects from another module using from ... import ..., ...