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Top Questions People Ask About Pandas, NumPy, Matplotlib & Scikit-learn — Answered!

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 Whether you're a beginner or brushing up on your skills, these are the real-world questions Python learners ask most about key libraries in data science. Let’s dive in! 🐍 🐼 Pandas: Data Manipulation Made Easy 1. How do I handle missing data in a DataFrame? df.fillna( 0 ) # Replace NaNs with 0 df.dropna() # Remove rows with NaNs df.isna(). sum () # Count missing values per column 2. How can I merge or join two DataFrames? pd.merge(df1, df2, on= 'id' , how= 'inner' ) # inner, left, right, outer 3. What is the difference between loc[] and iloc[] ? loc[] uses labels (e.g., column names) iloc[] uses integer positions df.loc[ 0 , 'name' ] # label-based df.iloc[ 0 , 1 ] # index-based 4. How do I group data and perform aggregation? df.groupby( 'category' )[ 'sales' ]. sum () 5. How can I convert a column to datetime format? df[ 'date' ] = pd.to_datetime(df[ 'date' ]) ...
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Best Skills You Need to Become an IoT Developer

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The Internet of things is a new subject. In this area lot of development is going on. Recently, AWS (Amazon web services) developed a platform for the Internet of things. I want to share with you the best skills you need to become an IoT developer.


Best Skills You Need to Become an IoT Developer

Skills You Need to Become an IoT developer

This is a big Question for IT freshers or experienced IT professionals what technologies they need to learn to start a career in this line. 

As a general rule, I have found the following are general requirements for the Internet of things (See Internet of things jobs here).
  • Java + multiple programming languages (Objective-C, C++), and interest in technologies such as Ruby, Scala, Clojure, Groovy, etc.
  • Experience in javascript libraries in any combination of the following areas: jQuery, AngularJS, Backbone.js, Ember.js, Node.js, GWT
  • Development experience in open source projects, especially large scale projects a plus.
  • Experience developing at-home projects used by a medium to large size audience a plus.
Someone who is published, especially in development books and articles a plus.
  • How CISCO is responding to the development of IoT: The Internet of Things (IoT) is increasing the connectedness of people and things on a scale that once was unimaginable. Connected devices outnumber the world's population by 1.5 to 1. The pace of IoT market adoption is accelerating because of: (You can refer our article on IoT)
  • Growth in analytics and cloud computing 
  • The increasing interconnectivity of machines and personal smart devices 
  • The proliferation of applications connecting supply chains, partners, and customers

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