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How to store a dataframe using Pandas
... it back using:
df = pd.read_pickle(file_name)
Note: before 0.11.1 save and load were the only way to do this (they are now deprecated in favor of to_pickle and read_pickle respectively).
Another popular choice is to use HDF5 (pytables) which offers very fast access times for large datasets:
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Best practices for large solutions in Visual Studio (2008) [closed]
...0+ projects, most of them C#. Naturally, it takes a long time to both open and build, so I am looking for best practices for such beasts. Along the lines of questions I am hoping to get answers to, are:
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A non-blocking read on a subprocess.PIPE in Python
I'm using the subprocess module to start a subprocess and connect to its output stream (standard output). I want to be able to execute non-blocking reads on its standard output. Is there a way to make .readline non-blocking or to check if there is data on the stream before I invoke .readline ? I'...
techniques for obscuring sensitive strings in C++
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Basically, anyone with access to your program and a debugger can and will find the key in the application if they want to.
But, if you just want to make sure the key doesn't show up when running strings on your binary, you could for instance make sure that the key is no...
Generating an Excel file in ASP.NET [closed]
...ow would you return the data? I'm looking for something that's as clean and straightforward as possible.
26 Answers
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What should I put in a meteor .gitignore file?
...essing the .meteor dir has a combination of configuration files (needed) and temporary files (not needed).
15 Answers
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Get underlined text with Markdown
I am using BlueCloth as a Markdown library for Ruby, and I can't find any syntax for getting a text underlined. What is it?
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Convert Iterator to ArrayList
...tor to ArrayList<Element> (or List<Element> ) in the best and fastest way possible, so that we can use ArrayList 's operations on it such as get(index) , add(element) , etc.
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Python: Why is functools.partial necessary?
...h lambdas?
Not much in terms of extra functionality (but, see later) – and, readability is in the eye of the beholder.
Most people who are familiar with functional programming languages (those in the Lisp/Scheme families in particular) appear to like lambda just fine – I say "most", definitely...
How to convert a data frame column to numeric type?
... 3
4 d 4 4 d 4
5 e 5 5 e 5
and let us run:
> sapply(d, mode)
char fake_char fac char_fac num
"character" "character" "numeric" "numeric" "numeric"
> sapply(d, class)
char fake_char fac char...