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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' ]) ...

How to Send Shell script Result to Email

The shell-script result you can send to email. Below, you will find the steps you need to do it. There are two steps and both will help you know the entire process.

Sending shell-script results to email

  1. Creating shell-script
  2. Sending the result to email


Bash script output to email

1. Creating shell-script


Create an empty script

Create test1.sh script using the vi command with the Sudo command.

$sudo vi test1.sh


Write the first line in the script

#!/bin/bash
exec > out1.txt 2>&1


Add logic in the shell script

#!/bin/bash
exec > out1.txt 2>&1

echo" Here is my logic"


Provide executable permissions to your script

$ sudo chmod +x test1.sh


Run your script using the command below

$ ./test1.sh


Verify the output

$ cat out1.txt


2. Sending result to email

Use the below command to send the output (result) to email.


$ mail <<output file path name>> abc@gmail.com


Bottom-line

These steps are helpful to send the output to an email. 


References

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