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Python: Tuples/dictionaries as keys, select, sort

Suppose I have quantities of fruits of different colors, e.g., 24 blue bananas, 12 green apples, 0 blue strawberries and so on. I'd like to organize them in a data structure in Python that allows for easy selection and sorting. My idea was to put them into a dictionary with tuples as keys, e.g., ...
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Setting an environment variable before a command in Bash is not working for the second command in a

In a given shell, normally I'd set a variable or variables and then run a command. Recently I learned about the concept of prepending a variable definition to a command: ...
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Using i and j as variables in Matlab

i and j are very popular variable names (see e.g., this question and this one ). 9 Answers ...
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Get data from fs.readFile

... 15 Answers 15 Active ...
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How can I split a string into segments of n characters?

As the title says, I've got a string and I want to split into segments of n characters. 12 Answers ...
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Why is argc not a constant?

As Effective C++ Item#3 states "Use const whenever possible", I start thinking "why not make these 'constant' parameters const "?. ...
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Epoch vs Iteration when training neural networks

What is the difference between epoch and iteration when training a multi-layer perceptron? 13 Answers ...
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How to extract numbers from a string in Python?

I would extract all the numbers contained in a string. Which is the better suited for the purpose, regular expressions or the isdigit() method? ...
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How to edit log message already committed in Subversion?

Is there a way to edit the log message of a certain revision in Subversion? I accidentally wrote the wrong filename in my commit message which could be confusing later. ...
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Duplicate log output when using Python logging module

I am using python logger. The following is my code: 14 Answers 14 ...