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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...
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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Scatter plot and Color mapping in Python
...ackoverflow.com%2fquestions%2f17682216%2fscatter-plot-and-color-mapping-in-python%23new-answer', 'question_page');
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“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 Set AllowOverride all
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On Linux, in order to relax access to the document root, you should edit the following file:
/etc/httpd/conf/httpd.conf
And depending on what directory level you want to relax access to, you have to change the directive
Allo...
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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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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What is the difference between an int and a long in C++?
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Windows Intel 64 4 bytes
Windows IA-64 4 bytes
Linux IA-32 4 bytes
Linux Intel 64 8 bytes
Linux IA-64 8 bytes
Mac OS X IA-32 4 bytes
Mac OS X Intel 64 8 bytes
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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...
Pipe subprocess standard output to a variable [duplicate]
I want to run a command in pythong , using the subprocess module, and store the output in a variable. However, I do not want the command's output to be printed to the terminal.
For this code:
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