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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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When splitting an empty string in Python, why does split() return an empty list while split('\n') re
... gives two pieces. Making two cuts, gives three pieces.
And so it is with Python's str.split(delimiter) method:
>>> ''.split(',') # No cuts
['']
>>> ','.split(',') # One cut
['', '']
>>> ',,'.split(',') # Two cuts
['', '', '']
Question: And is there ...
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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Convert hex string to int in Python
How do I convert a hex string to an int in Python?
12 Answers
12
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Best way to create a simple python web service [closed]
I've been using python for years, but I have little experience with python web programming. I'd like to create a very simple web service that exposes some functionality from an existing python script for use within my company. It will likely return the results in csv. What's the quickest way to get ...
Building a minimal plugin architecture in Python
I have an application, written in Python, which is used by a fairly technical audience (scientists).
18 Answers
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How to declare array of zeros in python (or an array of a certain size) [duplicate]
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Just for completeness: To declare a multidimensional list of zeros in python you have to use a list comprehension like this:
buckets = [[0 for col in range(5)] for row in range(10)]
to avoid reference sharing between the rows.
This looks more clumsy than chester1000's code, but is essential...
pandas: How do I split text in a column into multiple rows?
...miter. I was wondering if there is a simple way to do this using pandas or python?
6 Answers
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“/usr/bin/ld: cannot find -lz”
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Also helped me install/build lxml-3.4.0 for Python via pip on Ubuntu 14.04 LTS/trusty. Thanks!
– Marian
Sep 15 '14 at 8:07
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adding noise to a signal in python
...nt to add some random noise to some 100 bin signal that I am simulating in Python - to make it more realistic.
7 Answers
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