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Import multiple csv files into pandas and concatenate into one DataFrame

I would like to read several csv files from a directory into pandas and concatenate them into one big DataFrame. I have not been able to figure it out though. Here is what I have so far: ...
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Output to the same line overwriting previous output?

I am writing an FTP downloader. Part of to the code is something like this: 8 Answers ...
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jQuery Validate - require at least one field in a group to be filled

I'm using the excellent jQuery Validate Plugin to validate some forms. On one form, I need to ensure that the user fills in at least one of a group of fields. I think I've got a pretty good solution, and wanted to share it. Please suggest any improvements you can think of. ...
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pip broke. how to fix DistributionNotFound error?

Whenever i try to use pip I get an error. For exampple: 11 Answers 11 ...
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Why don't Java Generics support primitive types?

Why do generics in Java work with classes but not with primitive types? 6 Answers 6 ...
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EF5: Cannot attach the file ‘{0}' as database '{1}'

I'm encountering the exact issue as described here (read section "Cannot Attach to Deleted MDF File"), but the solution to the problem is not told there... ...
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Exact time measurement for performance testing [duplicate]

What is the most exact way of seeing how long something, for example a method call, took in code? 7 Answers ...
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Resize HTML5 canvas to fit window

How can I automatically scale the HTML5 <canvas> element to fit the page? 15 Answers ...
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How to provide user name and password when connecting to a network share

When connecting to a network share for which the current user (in my case, a network enabled service user) has no rights, name and password have to be provided. ...
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Pip install Matplotlib error with virtualenv

I am trying to install matplotlib in a new virtualenv. 11 Answers 11 ...