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Scatter plot and Color mapping in Python
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Data structure for loaded dice?
...ime) with a one-time O(n) set-up. You can find it documented in chapter 3 (PDF) of "Non-Uniform Random Variate Generation" by Luc Devroye.
The idea is to take your array of probabilities pk and produce three new n-element arrays, qk, ak, and bk. Each qk is a probability between 0 and 1, and each ak...
Shell command to sum integers, one per line?
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The one-liner version in Python:
$ python -c "import sys; print(sum(int(l) for l in sys.stdin))"
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Conditional Replace Pandas
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yield error: /opt/anaconda3/envs/python35/lib/python3.5/site-packages/ipykernel_launcher.py:1: SettingWithCopyWarning: A value is trying to be set on a copy of a slice from a DataFrame See the caveats in the documentation: pandas.pydata.org/pandas-docs/sta...
“inconsistent use of tabs and spaces in indentation”
I'm trying to create an application in Python 3.2 and I use tabs all the time for indentation, but even the editor changes some of them into spaces and then print out "inconsistent use of tabs and spaces in indentation" when I try to run the program.
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How to avoid having class data shared among instances?
... @AmalTs It looks like you don't understand how assignment in python works. See this video or this SO post. The behaviour you see is caused by the fact that you are mutating lists but rebinding references to ints and strings.
– Андрей Беньковский
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How can I specify working directory for popen
Is there a way to specify the running directory of command in Python's subprocess.Popen() ?
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Reading a huge .csv file
I'm currently trying to read data from .csv files in Python 2.7 with up to 1 million rows, and 200 columns (files range from 100mb to 1.6gb). I can do this (very slowly) for the files with under 300,000 rows, but once I go above that I get memory errors. My code looks like this:
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What is this 'Lambda' everyone keeps speaking of?
...otos global variables.
Looking at your profile I see that you're mostly a Python user. For the above pattern, Python has the concept of decorators. There are lots of example on the net for memoization decorators. The only difference is that in Python you most likely have a named nested function ins...
Copy multiple files in Python
... to copy all the files present in one directory to another directory using Python.
I have the source path and the destination path as string.
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