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Selecting with complex criteria from pandas.DataFrame

For example I have simple DF: 4 Answers 4 ...
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What's the difference between a single precision and double precision floating point operation?

What is the difference between a single precision floating point operation and double precision floating operation? 11 Answ...
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How to check if a json key exists?

So, I get some JSON values from the server but I don't know if there will be a particular field or not. 13 Answers ...
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Make first letter of a string upper case (with maximum performance)

I have a DetailsView with a TextBox and I want the input data be saved always with the FIRST LETTER IN CAPITAL. 41 ...
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Batch File; List files in directory, only filenames?

This is probably a very simple question, but I'm having trouble with it. Basically, I am trying to write a Batch File and I need it to list all the files in a certain directory. The dir command will do this, but it also gives a bunch of other information; I want it to list ONLY the file names an...
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How to print Unicode character in Python?

I want to make a dictionary where English words point to Russian and French translations. 9 Answers ...
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Run command on the Ansible host

Is it possible to run commands on the Ansible host? 8 Answers 8 ...
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How to generate a random integer number from within a range

This is a follow on from a previously posted question: 11 Answers 11 ...
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Which kind of pointer do I use when?

Ok, so the last time I wrote C++ for a living, std::auto_ptr was all the std lib had available, and boost::shared_ptr was all the rage. I never really looked into the other smart pointer types boost provided. I understand that C++11 now provides some of the types boost came up with, but not all ...
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How can I safely create a nested directory?

What is the most elegant way to check if the directory a file is going to be written to exists, and if not, create the directory using Python? Here is what I tried: ...