/tags/python/ Recent content in Python on Saleem Ansari Hugo -- gohugo.io en (c) 2024 Saleem Ansari Mon, 27 Aug 2018 00:00:27 +0530 /2018/08/27/pandas-pivot-example/ Mon, 27 Aug 2018 00:00:27 +0530 /2018/08/27/pandas-pivot-example/ Pandas Pivot Example /2016/05/09/top-20-stack-overflow-tags/ Mon, 09 May 2016 16:00:27 +0530 /2016/05/09/top-20-stack-overflow-tags/ Finding Top 20 Tags on StackOverflow main site Download StackOverflow Tags data from following site: https://archive.org/download/stackexchange wget -c "https://archive.org/download/stackexchange/stackoverflow.com-Tags.7z" 7za e stackoverflow.com-Tags.7z Now convert the file Tags.xml into a dataframe in Python: import json import pandas as pd import numpy as np import xmltodict import matplotlib.pyplot as plt f = open("Tags.xml") all_data = f.read() o = xmltodict.parse(all_data) df = pd.DataFrame.from_dict(o['tags']['row']) df[['counts']] = df[['@Count']].astype(int) df2 = df.sort_values(by=['counts'], ascending=False).head(20)[['counts', '@TagName']] """ counts @TagName 1067078 javascript 1025688 java 918586 c# 885422 php 800779 android 712360 jquery 542985 python 511091 html 431790 c++ 414394 ios 380535 mysql 372444 css 319001 sql 282582 asp. /2011/04/11/do-nothing-objects-in-python/ Mon, 11 Apr 2011 00:00:00 +0000 /2011/04/11/do-nothing-objects-in-python/ Here is how I created a simple Do Nothing object in python. class DoNothing(): def __getattr__(self, name): def k(*a, **b): pass return k log = DoNothing() log.debug("asdfa", 'asdf"') Now I can still have log.debug() statements throughout the code-base, in case I want them to do nothing. All I would do is re-assign log to a DoNothing object. log = DoNothing() I am sure there are some flaws with which approach, however this all I need for now. /2011/02/25/pylucene-on-fedora-14/ Fri, 25 Feb 2011 00:00:00 +0000 /2011/02/25/pylucene-on-fedora-14/ I couldn’t install pylucene simply by following command: yum install pylucene Nor did following work: easy_install pylucene Nor the following :-( pip-python install pylucene So. I had to build it myself. Here, I list those steps: Install JCC $ JCC_JDK=/usr/lib/jvm/java-1.6.0-openjdk-1.6.0.0.x86_64 pip-python install jcc Download pylucene pylucene wget -c http://apache.mirrors.pair.com//lucene/pylucene/pylucene-2.4.1-1-src.tar.gz tar zxf pylucene-2.4.1-1-src.tar.gz cd pylucene-2.4.1-1 Build and install http://lucene.apache.org/pylucene/documentation/install.html pushd jcc # edit setup.py to match your environment JCC_JDK=/usr/lib/jvm/java-1.6.0-openjdk-1.6.0.0.x86_64 python setup.py build` sudo python setup. /2010/05/24/c-reference-not-to-be-confused-with-java/python/...-reference/ Mon, 24 May 2010 00:00:00 +0000 /2010/05/24/c-reference-not-to-be-confused-with-java/python/...-reference/ This program assigns a new object of class A to reference a. It looks as expected, reference changes to new object ( see line 23,24,25): #include <iostream> using namespace std; class A { string name; public: A(string n): name(n) { } A(): name("NO ONE") { } void print() { cout << "I am "<< name << "!"<< endl; } }; int main(int argc, char *argv[]) { A matrix = A("the matrix"); A &a = matrix; a.