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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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5 Top Digital Skills You need in Future

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Before you perform work in a new-age digital job, focus on the real skills you need to learn.
real digital skills

1. Automate Repeated Tasks

  • Take the best example of saving all the emails from google account. That is after sending an email that should save in an Excel document.
  • This is one kind of Skill. So learning technologies to create Tools for this kind of automation provide you a lot of job opportunities.

2. Automate Stop Function

For example, work and home both are different. After certain hours the access to the Company network should be stopped. So that you can focus on your Home duties. Here you should have tools to do this kind of activity.

3. Data visualization

How to present data in a user-friendly way is the topmost digital skill. Nowadays there are many tools present. The Best example is Tableau. You can present the data in a user-friendly way.

4. Working Ability in Cloud Environment

For example, the olden days' servers are complex to migrate and move from one area to another. Cloud computing helps you to ease your job. You can move anywhere easily across the globe. Cloud servers really helpful. Learning Cloud computing shows a better career.

5. Ability to Use Modern Communication Channels

You can use Smart Phones, Social media, WhatsUp, Video conference, Voice calls, Internet-connected phones, to communicate with remote clients. You need to know how to use all these channels.


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