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Large, persistent DataFrame in pandas
... of memory, but there are currently memory problems with read_csv on large files caused by some complex Python internal issues (this is vague but it's been known for a long time: http://github.com/pydata/pandas/issues/407).
At the moment there isn't a perfect solution (here's a tedious one: you co...
How to save a PNG image server-side, from a base64 data string
... is to turn those base64 strings that this tool generates, into actual PNG files on the server, using PHP.
15 Answers
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How to make clang compile to llvm IR
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Given some C/C++ file foo.c:
> clang -S -emit-llvm foo.c
Produces foo.ll which is an LLVM IR file.
The -emit-llvm option can also be passed to the compiler front-end directly, and not the driver by means of -cc1:
> clang -cc1 foo.c...
Saving utf-8 texts in json.dumps as UTF8, not as \u escape sequence
...t; print(json_string.decode())
"ברי צקלה"
If you are writing to a file, just use json.dump() and leave it to the file object to encode:
with open('filename', 'w', encoding='utf8') as json_file:
json.dump("ברי צקלה", json_file, ensure_ascii=False)
Caveats for Python 2
For Pyth...
Input and output numpy arrays to h5py
...es are all of the type float . If I save it with the extension .dat the file size is of the order of 500 MB. I read that using h5py reduces the file size considerably. So, let's say I have the 2D numpy array named A . How do I save it to an h5py file?
Also, how do I read the same file and put ...
How to clear the cache of nginx?
I use nginx to as the front server, I have modified the CSS files, but nginx is still serving the old ones.
22 Answers
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How can I create a Makefile for C projects with SRC, OBJ, and BIN subdirectories?
A few months ago, I came up with the following generic Makefile for school assignments:
3 Answers
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Getting file size in Python? [duplicate]
Is there a built-in function for getting the size of a file object in bytes? I see some people do something like this:
5 An...
How to handle configuration in Go [closed]
... parameters for a Go program (the kind of stuff one might use properties files or ini files for, in other contexts)?
13...
How can I read a whole file into a string variable
I have lots of small files, I don't want to read them line by line.
5 Answers
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