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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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How to use Blockchain on Cloud

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Blockchain applications are growing in the financial world. Security is the main motto behind blockchain applications. You cannot tamper a record once created.


How to use Blockchain on Cloud

What is a platform 

A platform is a place where you can develop applications.

Top Blockchain Cloud Platforms

The development needs to create a project and deploy it into production. So that the real use can feel by users at their end.

Ok...

Let us come to three popular cloud platforms that are highly used in Blockchain applications:
  1. HyperLedger
  2. IBM BlueMix
  3. Microsoft Azure

#1. HyperLedger

  • The Hyperledger project is led by Executive Director Brian Behlendorf, who has decades of experience dating back to the original Linux Foundation and Apache Foundation, as well as being a CTO of the World Economic Forum. So it's not surprising that Hyperledger has been well received. You can learn hyper Ledger here.

  • Many of the top business and industry leaders have joined the project, including Accenture, Cisco, Fujitsu Limited, IBM, Intel, J.P. Morgan, and Wells Fargo. It has also attracted many of the top blockchain organizations.

#2. IBM Bluemix

  • IBM is now offering blockchain technology that integrates with its traditional offerings, such as IBM Bluemix. Bluemix is an open-standards, cloud-based PaaS for building and managing applications.

  • IBM has integrated a blockchain stack from Hyperledger, which is part of the Lynx Foundation, and is establishing best practices in blockchain technology.

#3. Microsoft Azure


  • Ethereum is a Turing-complete blockchain framework for build applications. Microsoft aims to build more offerings based on blockchain technology and Hyperledger. It's also growing the Azure marketplace while transitioning to a portal for customers on Azure.

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