• interest in working as data analyst as am now enrolled in "Data Analysis Professional Nanodegree Program" form Udacity. • experienced in Python programming language . • experienced in Python libraries like pandas & Numpy . • using Python programming language, I have compared the data form the system usage between three large cities: Chicago, New York City, and Washington, DC. •The dataset that I have wrangled (and analyzed and visualized) is the tweet archive of Twitter user @dog_rates, also known as WeRateDogs. WeRateDogs is a Twitter account that rates people's dogs with a humorous comment about the dog.