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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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Cloud Security rules top book to read it now

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The Cloud Security Rules explains the different aspects of cloud security to business leaders, CxO's, IT-managers and decision makers. The security principles are the same as before while the implementation and the risks involved are dramatically changed.

cloud security

The book is co-authored by some of the most recognized security specialists and bloggers in the world. The authors are gathered from USA, Europe and Africa, sharing their great knowledge of implementing and securing the cloud.

This book is made to help it easier for you to choose the right cloud supplier as well as setting up and running your critical services in the cloud.

1. Questions you will find answers about include

Do I have to accept that standard SLA?

What should an SLA include?

What standards should I be paying attention to, if any?

How do I treat mobile workers, and how do they fit into the cloud?

Do I really need to care about logging?

2. Other Stuff You Will Learn


Many more! Since the cloud computing is global, you risk using service providers in other countries than your own - even if you only operate in your own country. The Cloud Security Rules aims at helping you understand the risks involved, and help you determine the best strategy for your organization.

References

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