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Python, creating objects
I'm trying to learn python and I now I am trying to get the hang of classes and how to manipulate them with instances.
4 An...
Access data in package subdirectory
I am writing a python package with modules that need to open data files in a ./data/ subdirectory. Right now I have the paths to the files hardcoded into my classes and functions. I would like to write more robust code that can access the subdirectory regardless of where it is installed on the use...
Developing GUIs in Python: Tkinter vs PyQt [closed]
If one wants to develop a user interface in Python, which one to go for: TkInter or PyQt?
6 Answers
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How to extract numbers from a string in Python?
...me intensive numerical solver after all), the re module is in the standard Python library and it doesn't hurt to load it.
– Ioannis Filippidis
Apr 22 '14 at 7:27
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Sorting a Python list by two fields
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Python has a stable sort, so provided that performance isn't an issue the simplest way is to sort it by field 2 and then sort it again by field 1.
That will give you the result you want, the only catch is that if it is a big...
Proper stack and heap usage in C++?
...without exhausting address space. For 64-bit programs, or single threaded (Linux anyway) programs, this is not a major issue. Under 32-bit Linux, single threaded programs usually use dynamic stacks which can keep growing until they reach the top of the heap.
You need to access it outside the scope o...
Adding a Method to an Existing Object Instance
... add a method to an existing object (i.e., not in the class definition) in Python.
16 Answers
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Programmatically get the cache line size?
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On Linux (with a reasonably recent kernel), you can get this information out of /sys:
/sys/devices/system/cpu/cpu0/cache/
This directory has a subdirectory for each level of cache. Each of those directories contains the foll...
Python, remove all non-alphabet chars from string
I am writing a python MapReduce word count program. Problem is that there are many non-alphabet chars strewn about in the data, I have found this post Stripping everything but alphanumeric chars from a string in Python which shows a nice solution using regex, but I am not sure how to implement it
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Check free disk space for current partition in bash
... specify -k. (coreutils df defaults to 1k blocks, so you're pretty safe on Linux though - but if you have coreutils, you have stat, and that's even safer - no parsing required).
– Mat
Nov 13 '11 at 9:21
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