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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 Features People Need Today in Modern Devices

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Smart devices in the current world play a key role. It is because these have better features to help people. In this post, I shared the top features people expect in smart devices.

Now the world is mature enough to design devices and connect them with some intelligence and should give some benefit to users.

Intelligence in the Modern Devices.

Devices installed with Software, you can call Intelligent things. Modern devices nowadays have intelligence. 


People look at Smart things is the problem-solving approach. At the same time, smart things should generate revenue.

Modern devices features

List of Smart Devices.


There are many smart devices already in the market. For example, smartphones, smart appliances, Shoes, watches, and more. 


The real requirement is increasing user experience in those devices.


Design companies are advising their departments to implement high user experience in their devices. 


For example smart cameras, advice on personal and financial matters.

Features People Need in Modern Devices.


The market expectations for smart things are as follows
  • Unique Design
  • High user experience
  • Real-time problem solver
  • Unique solutions

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