Tag: Python

Twitter API Streaming in Python

Maybe the easiest way to connect to Twitter API and to stream tweets, is using Python and Tweepy. You can install Tweepy using pip: Tweepy is an open source library and you can check the source here. Maybe, take a peak at StreamListener class and see what additional options are available. ‘Nuff said. Here’s the ...

Google’s PageRank Algorithm in Python

Have you ever asked yourself how google ranks the pages when you search something on google.com? If yes, have a look at PageRank algorithm definition. I’ll not go into much details here, but to give you an idea, the World Wide Web can be seen as a large graph, consisting of pages as nodes and ...

Anonymous Web Scraping with Python Selenium PhantomJS Xpath and TOR

Using pure selenium methods to extract data from metasearch websites is quite tricky and uses a lot of CPU resources. I have spent significant amount of time with selenium built-in methods with python and have a feeling that the development is quite tedious, time consuming and prone to bugs. Selenium’s WebElement objects are not flexible, ...

Distribute Missing Values in Pandas DataFrame Column with Python

If you want to test how Maschine Learning algorithms perform with missing values you may need a script to distribute a fixed percentage of missing values in a feature. This script randomly distributes missing values in a single data set’s column. Enjoy…

Pandas DataFrame Subsampling in Python

Written long time ago to feed some ML algorithms with data subsets because the original data set was to huge and the algorithm execution performance was too long. Have fun with the script…

Feature Scaling in Python and Pandas DataFrame

Hire is a small script that i wrote long time ago to scale some of the features in order to get better performance and better prediction results in some ML algorithms. I used Python with Pandas to read in the CSV file and process feature values. Formulas for feature scaling used in the script can be found ...

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How to crawl Hotel Informations from booking using Python and Selenium

This post continues on the last one. Assuming you have the hotel list with urls from booking you can now extract addresses for each hotel. This address can be further converted to latitude and longitude since geo information that can be crawled from booking is not quite right. The script below extracts the address and hotel star ...

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