Epython Lab

Do you know how to create fake data? https://youtu.be/0HyIwcZBV3U

Completely Free SMS Gateway

Morioh is a social networking platform for programming and that connects programmers abroad. https://morioh.com/p/eb78f8b88dcc @epythonlab

Don't miss it out Link: http://www.udacity.com/scholarships/nokia-bit-scholarship

The process of from raw data to story. BTW, I wish a happy new year for #Ethiopian.

Scraping is one way of obtaining data from web page. Here you can learn Web scraping with some python libraries. Mastering Web Scraping in Python: Scaling to Distributed Crawling https://www.zenrows.com/blog/mastering-web-scraping-in-python-scaling-to-distributed-crawling @epythonlab #article #code #webscraping

Check If a List has Duplicate Elements https://www.pythonforbeginners.com/basics/check-if-a-list-has-duplicate-elements @epythonlab #list #article

Tableau is the best tool for building interactive Dashboard. Here is the online free trial for 13 days and you can also download the public https://dub01.online.tableau.com/#/site/pa/home

K-Centroid Clustering Summary: Cluster analysis identifies cohesive subgroups of observations within a dataset. It allows us to reduce a large number of observations into a smaller number of clusters. STEP 1: SELECT APPROPRIATE VARIABLES The first step is to understand the objectives for segmentation. Then, choose the appropriate variables that provide the information needed for clustering. A sophisticated cluster analysis cannot compensate for the poor choice of attributes. STEP 2: DATA PREPARATION Numeric data: Cluster analyses requires numeric data. Many non-numeric variables can be converted to numeric ones. Make sure to remove outliers as clustering algorithms are highly sensitive to outliers. Variable reduction: This step often requires variable reduction techniques to combine variables that revolve around a particular theme. A common method is Principal Component Analysis (PCA), which reduces a set of related variables into few principal components (PCs) that explain most of the variances in the data. Rule of thumb is to use PCs that account for ~80% variance. Scaling the data: Standardizing each variable using the z-score ensures that the results are not overly sensitive to variables with higher values. STEP 3: DETERMINE THE NUMBER OF CLUSTERS Use the AR and CH indices to determine the optimal method and number of clusters. Use a box and whisker plot. The higher the median and smaller the variation the better. Remember, clustering is an iterative process and may require comparing several models to arrive at a good solution. STEP 4: CREATE THE CLUSTERING MODEL Select the variables, standardization process, clustering method, and number of clusters that gave the best solution. Create the cluster model and append the clusters to the dataset. STEP 5: VISUALIZE AND VALIDATE RESULTS Visualization helps us determine the meaning and usefulness of the clustering solution. Use summary statistics to understand difference among clusters. Validate the results: You can use internal validation and/or external validation. Plot the distribution of the validation variable for each cluster using box and whisker plot to visualize the differences. #keynotes #cluster #kcentroid #dataanalysis @epythonlab

How to add an Element to a Set in Python https://www.pythonforbeginners.com/basics/how-to-add-an-element-to-a-set-in-python @epythonlab #code #article

Telegram scraper and adder The adder script doing the following jobs: 1. Reading credentials from txt file 2. Reading message from txt and send to telegram group randomly when 20 members are added 3. Reading csv file that contains members profile and adding to the target group 4. Once added the first 20-50 members, the file will be deleted automatically and start adding members from another file automatically(Here you can stop the script and change the credentials and run again to add members from another file) 5. Report how many members are added The scraper doing the following: 1. reading credentials from txt file(you have the opportunity to modify the credentials) 2. scraping members from the selected group 3. Save the members into separate files(50 members in one file) 4. Excluding bots 5. Scraping active users only. Join @epythonlab

This video shows the demo of how to read list of telegram groups links and auto joining and sending message to each group from the list. Functions: 1. It will jump if there is found that the channel is private or you are banned from it 2. It will jump if you are restricted to write message 3. reading list of links from the file etc. https://youtu.be/RER4vFGvzf0 Join @epythonlab