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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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6 Worth-it Cloud Security Courses

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Cloud security is critical to run cloud-applications. I have shared few courses useful for cloud security.

To get a job you need good training. Security courses are currently hot in the market.
  1. Cloud Security Hands-On Training: This course provides a solid foundation in cloud security, and includes a full day of hands-on labs to apply the principles in practice. We cover all the material needed to pass the Cloud Security Alliance Certificate of Cloud Security Knowledge (CCSK) exam, but add a pragmatic approach to immediate kick start your cloud security projects. For Black Hat we also add expanded material to show you how to take cloud security to the next level by leveraging DevOps techniques and the characteristics of the cloud.
  2. Cloud Security Fundamentals: An overview of security issues within each of these models will be covered with an in-depth discussion of the risks involved. This cloud security training course will go in-depth on architecture and infrastructure fundamentals for private, public and hybrid clouds, including a wide range of topics such as patch and configuration management, virtualization security, application security and change management. 
  3. Institute of information Security: In this course, we shall first discuss the characteristics of cloud computing and later on focus specifically on cloud security’s best practices taking reference from industry standards like NIST, OWASP, Cloud Security Alliance etc. We then look into the broad set of policies, technologies, and controls deployed to protect client data, applications and infrastructure associated with cloud computing.
  4. Cloud Security Training: In this course you will learn Virtualization Concepts and security, Risk Assessment on Cloud Migration and Emerging Threats
  5. Certification in Cloud Security:
  6. Cloud Security Essentials: In this course you will learn about Cyber-cloud and Mobile-security concepts.

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